./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/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_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/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_d039d475-578a-4f69-8623-b9111f54a39e/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 206fc494d359c55f00dca0f227d0ffa61103c97cbe34d3166496eff2224a478a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:21,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:21,321 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:10:21,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:21,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:21,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:21,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:21,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:21,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:21,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:21,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:21,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:21,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:21,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:21,361 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:21,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:21,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:21,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:21,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:21,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:21,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:21,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:21,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:21,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:21,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:21,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:21,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:21,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:21,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:21,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:21,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:21,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:21,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:21,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:21,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:21,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:21,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:21,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:21,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:21,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:21,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:21,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:21,374 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_d039d475-578a-4f69-8623-b9111f54a39e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 206fc494d359c55f00dca0f227d0ffa61103c97cbe34d3166496eff2224a478a [2024-10-31 22:10:21,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:21,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:21,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:21,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:21,689 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:21,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c Unable to find full path for "g++" [2024-10-31 22:10:23,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:23,961 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:23,961 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-10-31 22:10:23,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/data/6008c7d68/f8c28916df5e40009dceb7ce57077ea4/FLAG829a3fff8 [2024-10-31 22:10:23,990 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/data/6008c7d68/f8c28916df5e40009dceb7ce57077ea4 [2024-10-31 22:10:23,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:23,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:23,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:23,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:24,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:24,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:23" (1/1) ... [2024-10-31 22:10:24,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c762a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24, skipping insertion in model container [2024-10-31 22:10:24,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:23" (1/1) ... [2024-10-31 22:10:24,037 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:24,246 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_d039d475-578a-4f69-8623-b9111f54a39e/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2436,2449] [2024-10-31 22:10:24,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:24,260 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:24,281 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_d039d475-578a-4f69-8623-b9111f54a39e/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2436,2449] [2024-10-31 22:10:24,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:24,305 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:24,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24 WrapperNode [2024-10-31 22:10:24,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:24,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:24,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:24,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:24,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,347 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2024-10-31 22:10:24,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:24,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:24,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:24,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:24,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,392 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:10:24,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:24,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:24,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:24,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:24,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (1/1) ... [2024-10-31 22:10:24,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:24,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:24,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:10:24,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:10:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:10:24,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:10:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:10:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:10:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:24,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:24,507 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 22:10:24,656 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:24,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:24,964 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:24,967 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:25,177 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:25,178 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:10:25,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:25 BoogieIcfgContainer [2024-10-31 22:10:25,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:25,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:25,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:25,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:25,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:23" (1/3) ... [2024-10-31 22:10:25,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ad8ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:25, skipping insertion in model container [2024-10-31 22:10:25,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:24" (2/3) ... [2024-10-31 22:10:25,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ad8ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:25, skipping insertion in model container [2024-10-31 22:10:25,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:25" (3/3) ... [2024-10-31 22:10:25,192 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-10-31 22:10:25,233 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:25,233 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:10:25,233 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:25,308 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:10:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 70 flow [2024-10-31 22:10:25,373 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-10-31 22:10:25,374 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:10:25,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-31 22:10:25,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 70 flow [2024-10-31 22:10:25,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 62 flow [2024-10-31 22:10:25,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:25,407 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;@96336f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:25,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-31 22:10:25,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:25,418 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-31 22:10:25,418 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:10:25,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:25,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:25,420 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:25,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:25,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1813201285, now seen corresponding path program 1 times [2024-10-31 22:10:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847407682] [2024-10-31 22:10:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:25,688 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 22:10:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:25,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847407682] [2024-10-31 22:10:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847407682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:25,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261383870] [2024-10-31 22:10:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:25,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:25,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:10:25,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:10:25,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:25,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:10:25,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:25,897 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2024-10-31 22:10:25,897 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 22:10:25,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 252 events. 130/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 939 event pairs, 12 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 404. Up to 165 conditions per place. [2024-10-31 22:10:25,903 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 21 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2024-10-31 22:10:25,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 147 flow [2024-10-31 22:10:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-31 22:10:25,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-31 22:10:25,921 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 62 flow. Second operand 3 states and 61 transitions. [2024-10-31 22:10:25,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 147 flow [2024-10-31 22:10:25,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:25,929 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 87 flow [2024-10-31 22:10:25,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-10-31 22:10:25,935 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-10-31 22:10:25,936 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 87 flow [2024-10-31 22:10:25,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:10:25,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:25,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:25,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:25,937 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:25,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -426149495, now seen corresponding path program 1 times [2024-10-31 22:10:25,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:25,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585966140] [2024-10-31 22:10:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:25,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585966140] [2024-10-31 22:10:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585966140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:26,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:26,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:26,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841095563] [2024-10-31 22:10:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:26,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:26,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:26,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-10-31 22:10:26,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 22:10:26,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:26,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-10-31 22:10:26,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:26,304 INFO L124 PetriNetUnfolderBase]: 125/256 cut-off events. [2024-10-31 22:10:26,304 INFO L125 PetriNetUnfolderBase]: For 28/60 co-relation queries the response was YES. [2024-10-31 22:10:26,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 256 events. 125/256 cut-off events. For 28/60 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1065 event pairs, 29 based on Foata normal form. 11/243 useless extension candidates. Maximal degree in co-relation 318. Up to 119 conditions per place. [2024-10-31 22:10:26,309 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 25 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-10-31 22:10:26,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 165 flow [2024-10-31 22:10:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-10-31 22:10:26,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-31 22:10:26,312 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 87 flow. Second operand 3 states and 63 transitions. [2024-10-31 22:10:26,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 165 flow [2024-10-31 22:10:26,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:26,314 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2024-10-31 22:10:26,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2024-10-31 22:10:26,315 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-10-31 22:10:26,315 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2024-10-31 22:10:26,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 22:10:26,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:26,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:26,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:26,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:26,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash -615292971, now seen corresponding path program 1 times [2024-10-31 22:10:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:26,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862387092] [2024-10-31 22:10:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862387092] [2024-10-31 22:10:26,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862387092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:26,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:26,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112927029] [2024-10-31 22:10:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:26,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:26,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:26,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2024-10-31 22:10:26,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 22:10:26,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:26,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2024-10-31 22:10:26,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:26,560 INFO L124 PetriNetUnfolderBase]: 117/273 cut-off events. [2024-10-31 22:10:26,560 INFO L125 PetriNetUnfolderBase]: For 53/77 co-relation queries the response was YES. [2024-10-31 22:10:26,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 273 events. 117/273 cut-off events. For 53/77 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1214 event pairs, 17 based on Foata normal form. 14/256 useless extension candidates. Maximal degree in co-relation 220. Up to 101 conditions per place. [2024-10-31 22:10:26,564 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 22 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-31 22:10:26,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 164 flow [2024-10-31 22:10:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-31 22:10:26,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-31 22:10:26,566 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 61 transitions. [2024-10-31 22:10:26,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 164 flow [2024-10-31 22:10:26,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 159 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:26,569 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 98 flow [2024-10-31 22:10:26,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2024-10-31 22:10:26,570 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-10-31 22:10:26,570 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 98 flow [2024-10-31 22:10:26,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 22:10:26,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:26,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:26,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:26,571 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:26,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 922882975, now seen corresponding path program 1 times [2024-10-31 22:10:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014053075] [2024-10-31 22:10:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:10:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014053075] [2024-10-31 22:10:26,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014053075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:26,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:26,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392141822] [2024-10-31 22:10:26,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:26,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:26,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2024-10-31 22:10:26,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 98 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 22:10:26,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:26,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2024-10-31 22:10:26,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:26,806 INFO L124 PetriNetUnfolderBase]: 97/207 cut-off events. [2024-10-31 22:10:26,807 INFO L125 PetriNetUnfolderBase]: For 86/116 co-relation queries the response was YES. [2024-10-31 22:10:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 207 events. 97/207 cut-off events. For 86/116 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 779 event pairs, 11 based on Foata normal form. 12/197 useless extension candidates. Maximal degree in co-relation 186. Up to 106 conditions per place. [2024-10-31 22:10:26,811 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 22 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-31 22:10:26,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 170 flow [2024-10-31 22:10:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-31 22:10:26,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-31 22:10:26,817 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 98 flow. Second operand 3 states and 61 transitions. [2024-10-31 22:10:26,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 170 flow [2024-10-31 22:10:26,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:26,819 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 104 flow [2024-10-31 22:10:26,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-10-31 22:10:26,820 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-10-31 22:10:26,821 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 104 flow [2024-10-31 22:10:26,821 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 22:10:26,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:26,821 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] [2024-10-31 22:10:26,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:26,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:26,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 445722295, now seen corresponding path program 1 times [2024-10-31 22:10:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:26,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910515248] [2024-10-31 22:10:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:26,978 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 22:10:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:26,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910515248] [2024-10-31 22:10:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910515248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:26,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146367240] [2024-10-31 22:10:26,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:26,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:26,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-10-31 22:10:26,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 104 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 22:10:26,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:26,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-10-31 22:10:26,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:27,073 INFO L124 PetriNetUnfolderBase]: 113/236 cut-off events. [2024-10-31 22:10:27,074 INFO L125 PetriNetUnfolderBase]: For 114/134 co-relation queries the response was YES. [2024-10-31 22:10:27,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 236 events. 113/236 cut-off events. For 114/134 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 924 event pairs, 14 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 191. Up to 111 conditions per place. [2024-10-31 22:10:27,076 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 23 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-31 22:10:27,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 178 flow [2024-10-31 22:10:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-31 22:10:27,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-31 22:10:27,078 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 104 flow. Second operand 3 states and 59 transitions. [2024-10-31 22:10:27,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 178 flow [2024-10-31 22:10:27,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:27,081 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 104 flow [2024-10-31 22:10:27,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-31 22:10:27,082 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-10-31 22:10:27,082 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 104 flow [2024-10-31 22:10:27,082 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 22:10:27,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:27,083 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] [2024-10-31 22:10:27,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:27,083 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:27,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1246250265, now seen corresponding path program 1 times [2024-10-31 22:10:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624827530] [2024-10-31 22:10:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:27,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:27,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624827530] [2024-10-31 22:10:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624827530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:27,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404937149] [2024-10-31 22:10:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:27,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:27,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:27,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:10:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:27,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 22:10:27,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:27,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404937149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:28,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:28,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 13 [2024-10-31 22:10:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054117198] [2024-10-31 22:10:28,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:28,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:10:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:10:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:10:28,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-10-31 22:10:28,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 104 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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 22:10:28,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:28,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-10-31 22:10:28,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:29,259 INFO L124 PetriNetUnfolderBase]: 928/1584 cut-off events. [2024-10-31 22:10:29,259 INFO L125 PetriNetUnfolderBase]: For 539/539 co-relation queries the response was YES. [2024-10-31 22:10:29,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3957 conditions, 1584 events. 928/1584 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7634 event pairs, 69 based on Foata normal form. 130/1699 useless extension candidates. Maximal degree in co-relation 1513. Up to 331 conditions per place. [2024-10-31 22:10:29,273 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 116 selfloop transitions, 64 changer transitions 0/186 dead transitions. [2024-10-31 22:10:29,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 186 transitions, 946 flow [2024-10-31 22:10:29,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-31 22:10:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-31 22:10:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 335 transitions. [2024-10-31 22:10:29,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-10-31 22:10:29,277 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 104 flow. Second operand 20 states and 335 transitions. [2024-10-31 22:10:29,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 186 transitions, 946 flow [2024-10-31 22:10:29,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 186 transitions, 934 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:29,283 INFO L231 Difference]: Finished difference. Result has 69 places, 91 transitions, 648 flow [2024-10-31 22:10:29,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=648, PETRI_PLACES=69, PETRI_TRANSITIONS=91} [2024-10-31 22:10:29,284 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2024-10-31 22:10:29,284 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 91 transitions, 648 flow [2024-10-31 22:10:29,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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 22:10:29,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:29,285 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] [2024-10-31 22:10:29,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:10:29,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:10:29,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:29,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -301809363, now seen corresponding path program 1 times [2024-10-31 22:10:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454518866] [2024-10-31 22:10:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:10:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454518866] [2024-10-31 22:10:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454518866] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429002930] [2024-10-31 22:10:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:29,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:29,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:10:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:29,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:10:29,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:29,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:30,201 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 22:10:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429002930] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:30,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:10:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 3] total 8 [2024-10-31 22:10:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211443776] [2024-10-31 22:10:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:30,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:10:30,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2024-10-31 22:10:30,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 91 transitions, 648 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:30,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:30,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2024-10-31 22:10:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:30,553 INFO L124 PetriNetUnfolderBase]: 814/1511 cut-off events. [2024-10-31 22:10:30,553 INFO L125 PetriNetUnfolderBase]: For 8491/8511 co-relation queries the response was YES. [2024-10-31 22:10:30,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1511 events. 814/1511 cut-off events. For 8491/8511 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8102 event pairs, 219 based on Foata normal form. 44/1513 useless extension candidates. Maximal degree in co-relation 5851. Up to 579 conditions per place. [2024-10-31 22:10:30,574 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 69 selfloop transitions, 34 changer transitions 0/128 dead transitions. [2024-10-31 22:10:30,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 1153 flow [2024-10-31 22:10:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-10-31 22:10:30,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-10-31 22:10:30,576 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 648 flow. Second operand 4 states and 74 transitions. [2024-10-31 22:10:30,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 1153 flow [2024-10-31 22:10:30,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 128 transitions, 1111 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:30,612 INFO L231 Difference]: Finished difference. Result has 74 places, 104 transitions, 837 flow [2024-10-31 22:10:30,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=837, PETRI_PLACES=74, PETRI_TRANSITIONS=104} [2024-10-31 22:10:30,613 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-10-31 22:10:30,613 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 104 transitions, 837 flow [2024-10-31 22:10:30,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:30,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:30,614 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] [2024-10-31 22:10:30,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:10:30,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:30,818 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:30,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:30,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1535685695, now seen corresponding path program 1 times [2024-10-31 22:10:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:30,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550641859] [2024-10-31 22:10:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550641859] [2024-10-31 22:10:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550641859] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189789228] [2024-10-31 22:10:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:30,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:30,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:10:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:31,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:10:31,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:31,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189789228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:31,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-10-31 22:10:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189395541] [2024-10-31 22:10:31,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:31,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:31,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:10:31,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 104 transitions, 837 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:31,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:31,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:10:31,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:32,167 INFO L124 PetriNetUnfolderBase]: 2016/3807 cut-off events. [2024-10-31 22:10:32,167 INFO L125 PetriNetUnfolderBase]: For 25657/25965 co-relation queries the response was YES. [2024-10-31 22:10:32,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17591 conditions, 3807 events. 2016/3807 cut-off events. For 25657/25965 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 24478 event pairs, 290 based on Foata normal form. 40/3723 useless extension candidates. Maximal degree in co-relation 14643. Up to 1262 conditions per place. [2024-10-31 22:10:32,222 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 171 selfloop transitions, 15 changer transitions 1/231 dead transitions. [2024-10-31 22:10:32,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 231 transitions, 2328 flow [2024-10-31 22:10:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:10:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:10:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-31 22:10:32,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2024-10-31 22:10:32,226 INFO L175 Difference]: Start difference. First operand has 74 places, 104 transitions, 837 flow. Second operand 5 states and 111 transitions. [2024-10-31 22:10:32,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 231 transitions, 2328 flow [2024-10-31 22:10:32,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 231 transitions, 2306 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:32,308 INFO L231 Difference]: Finished difference. Result has 79 places, 116 transitions, 928 flow [2024-10-31 22:10:32,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=928, PETRI_PLACES=79, PETRI_TRANSITIONS=116} [2024-10-31 22:10:32,310 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2024-10-31 22:10:32,311 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 116 transitions, 928 flow [2024-10-31 22:10:32,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:32,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,313 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] [2024-10-31 22:10:32,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:10:32,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:32,515 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:32,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 503612401, now seen corresponding path program 2 times [2024-10-31 22:10:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:32,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106554544] [2024-10-31 22:10:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:10:32,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106554544] [2024-10-31 22:10:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106554544] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319206511] [2024-10-31 22:10:32,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:32,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:32,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:32,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:32,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:10:32,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:32,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:32,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:10:32,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:10:33,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:10:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319206511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:33,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-31 22:10:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495792766] [2024-10-31 22:10:33,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:33,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:33,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:10:33,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 116 transitions, 928 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 22:10:33,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:33,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:10:33,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:35,006 INFO L124 PetriNetUnfolderBase]: 3648/6840 cut-off events. [2024-10-31 22:10:35,006 INFO L125 PetriNetUnfolderBase]: For 50436/51152 co-relation queries the response was YES. [2024-10-31 22:10:35,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33433 conditions, 6840 events. 3648/6840 cut-off events. For 50436/51152 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 48967 event pairs, 483 based on Foata normal form. 149/6795 useless extension candidates. Maximal degree in co-relation 27516. Up to 1591 conditions per place. [2024-10-31 22:10:35,117 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 223 selfloop transitions, 31 changer transitions 1/299 dead transitions. [2024-10-31 22:10:35,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 299 transitions, 3061 flow [2024-10-31 22:10:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-10-31 22:10:35,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2024-10-31 22:10:35,119 INFO L175 Difference]: Start difference. First operand has 79 places, 116 transitions, 928 flow. Second operand 6 states and 136 transitions. [2024-10-31 22:10:35,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 299 transitions, 3061 flow [2024-10-31 22:10:35,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 299 transitions, 3005 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:35,294 INFO L231 Difference]: Finished difference. Result has 85 places, 132 transitions, 1055 flow [2024-10-31 22:10:35,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1055, PETRI_PLACES=85, PETRI_TRANSITIONS=132} [2024-10-31 22:10:35,295 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 57 predicate places. [2024-10-31 22:10:35,295 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 132 transitions, 1055 flow [2024-10-31 22:10:35,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 22:10:35,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:35,296 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:35,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:10:35,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:35,503 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:35,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 443373815, now seen corresponding path program 3 times [2024-10-31 22:10:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792173335] [2024-10-31 22:10:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:10:35,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792173335] [2024-10-31 22:10:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792173335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:35,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:35,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564074620] [2024-10-31 22:10:35,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:35,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:35,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:10:35,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 132 transitions, 1055 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 22:10:35,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:35,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:10:35,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:36,723 INFO L124 PetriNetUnfolderBase]: 1358/2696 cut-off events. [2024-10-31 22:10:36,724 INFO L125 PetriNetUnfolderBase]: For 21179/21538 co-relation queries the response was YES. [2024-10-31 22:10:36,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13507 conditions, 2696 events. 1358/2696 cut-off events. For 21179/21538 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17659 event pairs, 346 based on Foata normal form. 269/2835 useless extension candidates. Maximal degree in co-relation 11284. Up to 977 conditions per place. [2024-10-31 22:10:36,768 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 71 selfloop transitions, 22 changer transitions 0/140 dead transitions. [2024-10-31 22:10:36,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 1338 flow [2024-10-31 22:10:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-31 22:10:36,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-31 22:10:36,774 INFO L175 Difference]: Start difference. First operand has 85 places, 132 transitions, 1055 flow. Second operand 4 states and 68 transitions. [2024-10-31 22:10:36,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 1338 flow [2024-10-31 22:10:36,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 1314 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:36,827 INFO L231 Difference]: Finished difference. Result has 89 places, 125 transitions, 1099 flow [2024-10-31 22:10:36,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1099, PETRI_PLACES=89, PETRI_TRANSITIONS=125} [2024-10-31 22:10:36,828 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 61 predicate places. [2024-10-31 22:10:36,830 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 125 transitions, 1099 flow [2024-10-31 22:10:36,830 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 22:10:36,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:36,831 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:36,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:10:36,831 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:10:36,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 897639893, now seen corresponding path program 4 times [2024-10-31 22:10:36,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:36,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946939917] [2024-10-31 22:10:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:10:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946939917] [2024-10-31 22:10:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946939917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:37,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:37,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203952917] [2024-10-31 22:10:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:37,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:37,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:10:37,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 125 transitions, 1099 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 22:10:37,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:37,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:10:37,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:37,425 INFO L124 PetriNetUnfolderBase]: 772/1548 cut-off events. [2024-10-31 22:10:37,426 INFO L125 PetriNetUnfolderBase]: For 15152/15261 co-relation queries the response was YES. [2024-10-31 22:10:37,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 1548 events. 772/1548 cut-off events. For 15152/15261 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9006 event pairs, 258 based on Foata normal form. 135/1631 useless extension candidates. Maximal degree in co-relation 7110. Up to 633 conditions per place. [2024-10-31 22:10:37,436 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2024-10-31 22:10:37,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 115 transitions, 1221 flow [2024-10-31 22:10:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-31 22:10:37,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-31 22:10:37,438 INFO L175 Difference]: Start difference. First operand has 89 places, 125 transitions, 1099 flow. Second operand 4 states and 68 transitions. [2024-10-31 22:10:37,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 115 transitions, 1221 flow [2024-10-31 22:10:37,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 115 transitions, 1130 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:37,473 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2024-10-31 22:10:37,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2024-10-31 22:10:37,474 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-10-31 22:10:37,475 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2024-10-31 22:10:37,475 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 22:10:37,479 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-31 22:10:37,480 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-31 22:10:37,480 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-31 22:10:37,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:10:37,481 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:37,485 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:10:37,485 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:10:37,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:10:37 BasicIcfg [2024-10-31 22:10:37,491 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:10:37,492 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:10:37,492 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:10:37,492 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:10:37,493 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:25" (3/4) ... [2024-10-31 22:10:37,497 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 22:10:37,501 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-31 22:10:37,502 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-31 22:10:37,508 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2024-10-31 22:10:37,508 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-31 22:10:37,509 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-31 22:10:37,509 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-31 22:10:37,614 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:10:37,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 22:10:37,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:10:37,616 INFO L158 Benchmark]: Toolchain (without parser) took 13620.85ms. Allocated memory was 167.8MB in the beginning and 604.0MB in the end (delta: 436.2MB). Free memory was 130.7MB in the beginning and 409.3MB in the end (delta: -278.6MB). Peak memory consumption was 160.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,616 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:37,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.33ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 117.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.95ms. Allocated memory is still 167.8MB. Free memory was 117.4MB in the beginning and 115.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,617 INFO L158 Benchmark]: Boogie Preprocessor took 68.41ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 113.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,618 INFO L158 Benchmark]: RCFGBuilder took 761.03ms. Allocated memory is still 167.8MB. Free memory was 113.9MB in the beginning and 92.3MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,619 INFO L158 Benchmark]: TraceAbstraction took 12309.16ms. Allocated memory was 167.8MB in the beginning and 604.0MB in the end (delta: 436.2MB). Free memory was 91.8MB in the beginning and 413.5MB in the end (delta: -321.7MB). Peak memory consumption was 199.9MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,619 INFO L158 Benchmark]: Witness Printer took 123.47ms. Allocated memory is still 604.0MB. Free memory was 413.5MB in the beginning and 409.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:10:37,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.33ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 117.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.95ms. Allocated memory is still 167.8MB. Free memory was 117.4MB in the beginning and 115.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.41ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 113.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 761.03ms. Allocated memory is still 167.8MB. Free memory was 113.9MB in the beginning and 92.3MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12309.16ms. Allocated memory was 167.8MB in the beginning and 604.0MB in the end (delta: 436.2MB). Free memory was 91.8MB in the beginning and 413.5MB in the end (delta: -321.7MB). Peak memory consumption was 199.9MB. Max. memory is 16.1GB. * Witness Printer took 123.47ms. Allocated memory is still 604.0MB. Free memory was 413.5MB in the beginning and 409.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.1s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 953 IncrementalHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 8 mSDtfsCounter, 953 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1099occurred in iteration=10, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 444 ConstructedInterpolants, 0 QuantifiedInterpolants, 1898 SizeOfPredicates, 7 NumberOfNonLiveVariables, 456 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 66/125 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-31 22:10:37,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d039d475-578a-4f69-8623-b9111f54a39e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE