./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU --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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:57:24,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:57:24,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:57:24,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:57:24,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:57:24,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:57:24,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:57:24,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:57:24,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:57:24,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:57:24,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:57:24,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:57:24,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:57:24,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:57:24,259 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:57:24,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:57:24,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:57:24,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:57:24,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:57:24,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:57:24,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:57:24,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:57:24,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:57:24,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:57:24,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:57:24,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:57:24,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:57:24,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:57:24,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:57:24,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:57:24,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:57:24,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:57:24,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:24,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:57:24,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:57:24,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:57:24,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:57:24,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:57:24,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:57:24,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:57:24,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:57:24,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:57:24,279 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_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-10-31 21:57:24,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:57:24,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:57:24,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:57:24,622 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:57:24,622 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:57:24,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c Unable to find full path for "g++" [2024-10-31 21:57:26,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:57:26,836 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:57:26,836 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-31 21:57:26,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/data/2f6984532/7ad5d1ad752f4254bb3dbc4fa7b8321e/FLAG744d232ea [2024-10-31 21:57:26,896 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/data/2f6984532/7ad5d1ad752f4254bb3dbc4fa7b8321e [2024-10-31 21:57:26,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:57:26,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:57:26,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:26,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:57:26,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:57:26,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:26" (1/1) ... [2024-10-31 21:57:26,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479421a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:26, skipping insertion in model container [2024-10-31 21:57:26,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:26" (1/1) ... [2024-10-31 21:57:26,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:57:27,159 WARN L251 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_65152902-1783-443e-a2d0-05818f4f2ff8/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2024-10-31 21:57:27,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:27,179 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:57:27,213 WARN L251 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_65152902-1783-443e-a2d0-05818f4f2ff8/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2024-10-31 21:57:27,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:27,237 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:57:27,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27 WrapperNode [2024-10-31 21:57:27,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:27,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:27,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:57:27,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:57:27,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,305 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 337 [2024-10-31 21:57:27,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:27,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:57:27,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:57:27,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:57:27,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,347 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-31 21:57:27,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:57:27,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:57:27,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:57:27,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:57:27,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (1/1) ... [2024-10-31 21:57:27,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:27,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:57:27,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:57:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:57:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:57:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:57:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:57:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:57:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 21:57:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 21:57:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:57:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:57:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 21:57:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 21:57:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 21:57:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 21:57:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 21:57:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:57:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:57:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 21:57:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 21:57:27,480 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:57:27,667 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:57:27,670 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:57:28,303 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:57:28,307 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:57:28,903 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:57:28,904 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 21:57:28,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:28 BoogieIcfgContainer [2024-10-31 21:57:28,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:57:28,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:57:28,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:57:28,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:57:28,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:57:26" (1/3) ... [2024-10-31 21:57:28,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9c4595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:28, skipping insertion in model container [2024-10-31 21:57:28,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:27" (2/3) ... [2024-10-31 21:57:28,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9c4595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:28, skipping insertion in model container [2024-10-31 21:57:28,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:28" (3/3) ... [2024-10-31 21:57:28,921 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-10-31 21:57:28,948 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:57:28,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:57:28,948 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:57:29,043 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 21:57:29,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 117 flow [2024-10-31 21:57:29,139 INFO L124 PetriNetUnfolderBase]: 9/45 cut-off events. [2024-10-31 21:57:29,139 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 21:57:29,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 9/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-31 21:57:29,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 48 transitions, 117 flow [2024-10-31 21:57:29,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 106 flow [2024-10-31 21:57:29,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:57:29,177 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;@295711e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:57:29,177 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 21:57:29,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:57:29,206 INFO L124 PetriNetUnfolderBase]: 9/43 cut-off events. [2024-10-31 21:57:29,206 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 21:57:29,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:29,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:29,207 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:29,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:29,213 INFO L85 PathProgramCache]: Analyzing trace with hash -102076622, now seen corresponding path program 1 times [2024-10-31 21:57:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804999867] [2024-10-31 21:57:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:29,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:29,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804999867] [2024-10-31 21:57:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804999867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:29,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776543616] [2024-10-31 21:57:29,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:29,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 21:57:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 21:57:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 21:57:29,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:29,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-10-31 21:57:29,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:29,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:29,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:30,438 INFO L124 PetriNetUnfolderBase]: 2548/3637 cut-off events. [2024-10-31 21:57:30,438 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-10-31 21:57:30,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 3637 events. 2548/3637 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16610 event pairs, 2146 based on Foata normal form. 0/3229 useless extension candidates. Maximal degree in co-relation 7063. Up to 3626 conditions per place. [2024-10-31 21:57:30,464 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 37 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2024-10-31 21:57:30,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 174 flow [2024-10-31 21:57:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 21:57:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 21:57:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-10-31 21:57:30,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-31 21:57:30,480 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 2 states and 54 transitions. [2024-10-31 21:57:30,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 174 flow [2024-10-31 21:57:30,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 21:57:30,492 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 88 flow [2024-10-31 21:57:30,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-10-31 21:57:30,499 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2024-10-31 21:57:30,501 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 88 flow [2024-10-31 21:57:30,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-10-31 21:57:30,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:30,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:30,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:57:30,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:30,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash 665032564, now seen corresponding path program 1 times [2024-10-31 21:57:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129461168] [2024-10-31 21:57:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:30,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:30,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129461168] [2024-10-31 21:57:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129461168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375389574] [2024-10-31 21:57:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:30,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:30,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:30,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:30,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-31 21:57:30,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:30,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:30,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:31,520 INFO L124 PetriNetUnfolderBase]: 3499/4990 cut-off events. [2024-10-31 21:57:31,520 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-10-31 21:57:31,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 4990 events. 3499/4990 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25016 event pairs, 876 based on Foata normal form. 1/4374 useless extension candidates. Maximal degree in co-relation 10069. Up to 3852 conditions per place. [2024-10-31 21:57:31,552 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 56 selfloop transitions, 4 changer transitions 1/65 dead transitions. [2024-10-31 21:57:31,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 263 flow [2024-10-31 21:57:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-10-31 21:57:31,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-10-31 21:57:31,556 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 3 states and 83 transitions. [2024-10-31 21:57:31,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 263 flow [2024-10-31 21:57:31,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:57:31,560 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 114 flow [2024-10-31 21:57:31,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-10-31 21:57:31,561 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2024-10-31 21:57:31,562 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 114 flow [2024-10-31 21:57:31,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-31 21:57:31,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:31,563 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:31,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:57:31,564 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:31,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash -886347784, now seen corresponding path program 1 times [2024-10-31 21:57:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:31,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116465232] [2024-10-31 21:57:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116465232] [2024-10-31 21:57:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116465232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:31,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:31,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:57:31,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211965521] [2024-10-31 21:57:31,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:31,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:31,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:31,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:31,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:31,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:31,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-31 21:57:31,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:31,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:31,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:32,764 INFO L124 PetriNetUnfolderBase]: 4888/7036 cut-off events. [2024-10-31 21:57:32,765 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-10-31 21:57:32,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15083 conditions, 7036 events. 4888/7036 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 35526 event pairs, 2384 based on Foata normal form. 165/6301 useless extension candidates. Maximal degree in co-relation 15078. Up to 3648 conditions per place. [2024-10-31 21:57:32,804 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 65 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-10-31 21:57:32,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 310 flow [2024-10-31 21:57:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-31 21:57:32,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-31 21:57:32,806 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 114 flow. Second operand 3 states and 87 transitions. [2024-10-31 21:57:32,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 310 flow [2024-10-31 21:57:32,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:32,809 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 118 flow [2024-10-31 21:57:32,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-10-31 21:57:32,810 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-31 21:57:32,811 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 118 flow [2024-10-31 21:57:32,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-31 21:57:32,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:32,812 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:32,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:57:32,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:32,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1401038186, now seen corresponding path program 1 times [2024-10-31 21:57:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028750346] [2024-10-31 21:57:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:32,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028750346] [2024-10-31 21:57:32,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028750346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:32,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:32,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:57:32,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510463451] [2024-10-31 21:57:32,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:32,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:32,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:32,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:32,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-31 21:57:32,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:32,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:32,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:33,609 INFO L124 PetriNetUnfolderBase]: 3703/5358 cut-off events. [2024-10-31 21:57:33,609 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-10-31 21:57:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 5358 events. 3703/5358 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25780 event pairs, 1275 based on Foata normal form. 90/4779 useless extension candidates. Maximal degree in co-relation 11727. Up to 4000 conditions per place. [2024-10-31 21:57:33,649 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 54 selfloop transitions, 2 changer transitions 5/65 dead transitions. [2024-10-31 21:57:33,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 285 flow [2024-10-31 21:57:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-31 21:57:33,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-31 21:57:33,653 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 118 flow. Second operand 3 states and 82 transitions. [2024-10-31 21:57:33,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 285 flow [2024-10-31 21:57:33,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:33,657 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 124 flow [2024-10-31 21:57:33,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-31 21:57:33,658 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-31 21:57:33,658 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 124 flow [2024-10-31 21:57:33,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-31 21:57:33,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:33,660 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] [2024-10-31 21:57:33,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:57:33,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:33,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash -664395841, now seen corresponding path program 1 times [2024-10-31 21:57:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814900620] [2024-10-31 21:57:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:33,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814900620] [2024-10-31 21:57:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814900620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:57:33,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966462780] [2024-10-31 21:57:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:33,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:57:33,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:33,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:57:33,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:57:33,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:33,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-31 21:57:33,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:33,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:33,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:34,438 INFO L124 PetriNetUnfolderBase]: 2561/3734 cut-off events. [2024-10-31 21:57:34,438 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-10-31 21:57:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8246 conditions, 3734 events. 2561/3734 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16251 event pairs, 1346 based on Foata normal form. 62/3266 useless extension candidates. Maximal degree in co-relation 8239. Up to 2767 conditions per place. [2024-10-31 21:57:34,465 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 7/61 dead transitions. [2024-10-31 21:57:34,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 275 flow [2024-10-31 21:57:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:57:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:57:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-31 21:57:34,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-31 21:57:34,467 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 124 flow. Second operand 3 states and 76 transitions. [2024-10-31 21:57:34,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 275 flow [2024-10-31 21:57:34,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:34,470 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 134 flow [2024-10-31 21:57:34,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-31 21:57:34,471 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-31 21:57:34,471 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 134 flow [2024-10-31 21:57:34,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-31 21:57:34,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:34,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:34,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:57:34,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:34,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash -802486131, now seen corresponding path program 1 times [2024-10-31 21:57:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:34,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408615680] [2024-10-31 21:57:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408615680] [2024-10-31 21:57:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408615680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:57:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037029235] [2024-10-31 21:57:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:34,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:57:34,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:34,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-31 21:57:34,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:34,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:34,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:35,339 INFO L124 PetriNetUnfolderBase]: 3173/4706 cut-off events. [2024-10-31 21:57:35,339 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-10-31 21:57:35,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 4706 events. 3173/4706 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22250 event pairs, 2856 based on Foata normal form. 56/4044 useless extension candidates. Maximal degree in co-relation 10434. Up to 3723 conditions per place. [2024-10-31 21:57:35,363 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 40 selfloop transitions, 2 changer transitions 30/76 dead transitions. [2024-10-31 21:57:35,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 346 flow [2024-10-31 21:57:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:57:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:57:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-31 21:57:35,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-31 21:57:35,365 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 134 flow. Second operand 5 states and 104 transitions. [2024-10-31 21:57:35,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 346 flow [2024-10-31 21:57:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:35,367 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 154 flow [2024-10-31 21:57:35,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-10-31 21:57:35,368 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-10-31 21:57:35,368 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 154 flow [2024-10-31 21:57:35,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-31 21:57:35,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:35,369 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:35,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:57:35,369 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:35,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1658302438, now seen corresponding path program 1 times [2024-10-31 21:57:35,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:35,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576007175] [2024-10-31 21:57:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:57:35,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576007175] [2024-10-31 21:57:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576007175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:35,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:35,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:57:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244174445] [2024-10-31 21:57:35,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:35,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:35,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:57:35,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:35,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-10-31 21:57:35,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:35,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:36,298 INFO L124 PetriNetUnfolderBase]: 3336/4961 cut-off events. [2024-10-31 21:57:36,298 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2024-10-31 21:57:36,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11118 conditions, 4961 events. 3336/4961 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23602 event pairs, 3018 based on Foata normal form. 14/4235 useless extension candidates. Maximal degree in co-relation 11107. Up to 3721 conditions per place. [2024-10-31 21:57:36,324 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 40 selfloop transitions, 3 changer transitions 30/77 dead transitions. [2024-10-31 21:57:36,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 390 flow [2024-10-31 21:57:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:57:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-10-31 21:57:36,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-10-31 21:57:36,326 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 154 flow. Second operand 4 states and 97 transitions. [2024-10-31 21:57:36,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 390 flow [2024-10-31 21:57:36,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 366 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-31 21:57:36,332 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 158 flow [2024-10-31 21:57:36,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-10-31 21:57:36,333 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-10-31 21:57:36,333 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 158 flow [2024-10-31 21:57:36,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-10-31 21:57:36,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:36,334 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:36,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:57:36,334 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:36,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2115243705, now seen corresponding path program 1 times [2024-10-31 21:57:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854935155] [2024-10-31 21:57:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:57:36,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:36,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854935155] [2024-10-31 21:57:36,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854935155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:36,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:36,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:57:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222686648] [2024-10-31 21:57:36,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:36,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:36,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:57:36,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:36,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2024-10-31 21:57:36,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:36,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:36,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:37,281 INFO L124 PetriNetUnfolderBase]: 3297/4894 cut-off events. [2024-10-31 21:57:37,281 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2024-10-31 21:57:37,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10865 conditions, 4894 events. 3297/4894 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23330 event pairs, 2984 based on Foata normal form. 10/4168 useless extension candidates. Maximal degree in co-relation 10854. Up to 3719 conditions per place. [2024-10-31 21:57:37,309 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2024-10-31 21:57:37,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 356 flow [2024-10-31 21:57:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:57:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-31 21:57:37,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-10-31 21:57:37,311 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 158 flow. Second operand 4 states and 91 transitions. [2024-10-31 21:57:37,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 356 flow [2024-10-31 21:57:37,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 21:57:37,315 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 166 flow [2024-10-31 21:57:37,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-31 21:57:37,316 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-31 21:57:37,316 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 166 flow [2024-10-31 21:57:37,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2024-10-31 21:57:37,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:37,316 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:37,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:57:37,317 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:37,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1670686615, now seen corresponding path program 1 times [2024-10-31 21:57:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:37,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531525533] [2024-10-31 21:57:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:57:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531525533] [2024-10-31 21:57:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531525533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606245072] [2024-10-31 21:57:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:37,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:37,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:37,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:37,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:57:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:37,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:57:37,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 21:57:37,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606245072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:37,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-31 21:57:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137561667] [2024-10-31 21:57:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:37,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:37,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:37,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-31 21:57:37,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:37,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:37,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:39,148 INFO L124 PetriNetUnfolderBase]: 5255/7615 cut-off events. [2024-10-31 21:57:39,149 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2024-10-31 21:57:39,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 7615 events. 5255/7615 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35172 event pairs, 2749 based on Foata normal form. 156/6710 useless extension candidates. Maximal degree in co-relation 17538. Up to 2981 conditions per place. [2024-10-31 21:57:39,200 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 85 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-10-31 21:57:39,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 498 flow [2024-10-31 21:57:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:57:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-31 21:57:39,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-10-31 21:57:39,202 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 166 flow. Second operand 4 states and 115 transitions. [2024-10-31 21:57:39,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 498 flow [2024-10-31 21:57:39,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 488 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 21:57:39,209 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 219 flow [2024-10-31 21:57:39,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-31 21:57:39,213 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-10-31 21:57:39,214 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 219 flow [2024-10-31 21:57:39,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-31 21:57:39,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:39,214 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:39,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:57:39,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:39,415 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:39,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash -695731987, now seen corresponding path program 1 times [2024-10-31 21:57:39,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:39,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663860123] [2024-10-31 21:57:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:39,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:57:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663860123] [2024-10-31 21:57:39,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663860123] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140278970] [2024-10-31 21:57:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:39,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:39,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:39,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:39,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:57:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:57:39,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:57:39,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:57:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:57:40,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140278970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:57:40,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:57:40,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 21:57:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436349912] [2024-10-31 21:57:40,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:57:40,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:57:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:57:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:57:40,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2024-10-31 21:57:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:40,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:41,405 INFO L124 PetriNetUnfolderBase]: 6007/8805 cut-off events. [2024-10-31 21:57:41,405 INFO L125 PetriNetUnfolderBase]: For 4179/4179 co-relation queries the response was YES. [2024-10-31 21:57:41,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21967 conditions, 8805 events. 6007/8805 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 42986 event pairs, 5125 based on Foata normal form. 2/7537 useless extension candidates. Maximal degree in co-relation 21954. Up to 7601 conditions per place. [2024-10-31 21:57:41,479 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 3 changer transitions 43/98 dead transitions. [2024-10-31 21:57:41,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 539 flow [2024-10-31 21:57:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:57:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:57:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-10-31 21:57:41,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-10-31 21:57:41,481 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 219 flow. Second operand 7 states and 130 transitions. [2024-10-31 21:57:41,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 539 flow [2024-10-31 21:57:41,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 531 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-31 21:57:41,492 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 235 flow [2024-10-31 21:57:41,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-10-31 21:57:41,495 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-10-31 21:57:41,495 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 235 flow [2024-10-31 21:57:41,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2024-10-31 21:57:41,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:41,496 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] [2024-10-31 21:57:41,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 21:57:41,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:41,701 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:41,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash 231276410, now seen corresponding path program 2 times [2024-10-31 21:57:41,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:41,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969057913] [2024-10-31 21:57:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 21:57:42,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969057913] [2024-10-31 21:57:42,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969057913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257955161] [2024-10-31 21:57:42,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:57:42,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:42,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:42,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:57:42,355 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:57:42,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:57:42,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:57:42,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 21:57:42,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:57:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 21:57:43,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257955161] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:57:43,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:57:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-31 21:57:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327049087] [2024-10-31 21:57:43,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:57:43,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 21:57:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 21:57:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-31 21:57:43,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-31 21:57:43,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 235 flow. Second operand has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 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) [2024-10-31 21:57:43,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:43,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-31 21:57:43,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:44,681 INFO L124 PetriNetUnfolderBase]: 6488/9654 cut-off events. [2024-10-31 21:57:44,681 INFO L125 PetriNetUnfolderBase]: For 5770/5770 co-relation queries the response was YES. [2024-10-31 21:57:44,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24156 conditions, 9654 events. 6488/9654 cut-off events. For 5770/5770 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 48938 event pairs, 5339 based on Foata normal form. 345/8634 useless extension candidates. Maximal degree in co-relation 24138. Up to 7598 conditions per place. [2024-10-31 21:57:44,748 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 46 selfloop transitions, 6 changer transitions 55/111 dead transitions. [2024-10-31 21:57:44,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 659 flow [2024-10-31 21:57:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:57:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:57:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-10-31 21:57:44,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-10-31 21:57:44,751 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 235 flow. Second operand 9 states and 153 transitions. [2024-10-31 21:57:44,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 659 flow [2024-10-31 21:57:44,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 637 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 21:57:44,770 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 249 flow [2024-10-31 21:57:44,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-31 21:57:44,771 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-10-31 21:57:44,772 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 249 flow [2024-10-31 21:57:44,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 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) [2024-10-31 21:57:44,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:44,772 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-10-31 21:57:44,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 21:57:44,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:44,974 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:57:44,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 906033355, now seen corresponding path program 3 times [2024-10-31 21:57:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365735432] [2024-10-31 21:57:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:44,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365735432] [2024-10-31 21:57:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365735432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318482032] [2024-10-31 21:57:50,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:57:50,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:50,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:50,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65152902-1783-443e-a2d0-05818f4f2ff8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:57:51,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 21:57:51,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:57:51,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-31 21:57:51,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:51,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1