./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.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_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/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_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/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_01819b06-4ec4-459b-a12e-a405c4e709ab/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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:45,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:45,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:03:45,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:45,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:46,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:46,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:46,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:46,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:46,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:46,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:46,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:46,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:46,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:46,009 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:46,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:46,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:46,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:46,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:46,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:46,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:46,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:46,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:46,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:46,018 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:46,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:46,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:46,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:46,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:46,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:46,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:46,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:46,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:46,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:46,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:46,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:46,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:46,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:46,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:46,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:46,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:46,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:46,027 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_01819b06-4ec4-459b-a12e-a405c4e709ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-31 22:03:46,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:46,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:46,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:46,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:46,357 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:46,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c Unable to find full path for "g++" [2024-10-31 22:03:48,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:48,896 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:48,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-31 22:03:48,912 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/data/00f4151fc/7e59354b30e644d488e36509887df2e6/FLAG73720a6b1 [2024-10-31 22:03:48,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/data/00f4151fc/7e59354b30e644d488e36509887df2e6 [2024-10-31 22:03:48,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:48,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:48,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:48,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:48,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:48,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:48" (1/1) ... [2024-10-31 22:03:48,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ff41f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:48, skipping insertion in model container [2024-10-31 22:03:48,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:48" (1/1) ... [2024-10-31 22:03:48,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:49,266 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_01819b06-4ec4-459b-a12e-a405c4e709ab/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-10-31 22:03:49,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:49,298 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:49,356 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_01819b06-4ec4-459b-a12e-a405c4e709ab/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-10-31 22:03:49,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:49,394 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:49,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49 WrapperNode [2024-10-31 22:03:49,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:49,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:49,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:49,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:49,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,446 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 165 [2024-10-31 22:03:49,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:49,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:49,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:49,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:49,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,486 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-31 22:03:49,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:49,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:49,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:49,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:49,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (1/1) ... [2024-10-31 22:03:49,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:49,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:49,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01819b06-4ec4-459b-a12e-a405c4e709ab/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:03:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:03:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:03:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:03:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:03:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:03:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:03:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:03:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:03:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:03:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:49,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:49,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:03:49,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:03:49,595 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 22:03:49,804 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:49,807 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:50,429 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:03:50,429 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:51,078 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:51,078 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:03:51,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:51 BoogieIcfgContainer [2024-10-31 22:03:51,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:51,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:51,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:51,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:51,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:48" (1/3) ... [2024-10-31 22:03:51,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1218ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:51, skipping insertion in model container [2024-10-31 22:03:51,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:49" (2/3) ... [2024-10-31 22:03:51,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1218ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:51, skipping insertion in model container [2024-10-31 22:03:51,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:51" (3/3) ... [2024-10-31 22:03:51,093 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-10-31 22:03:51,114 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:51,114 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:03:51,114 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:03:51,178 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:03:51,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-31 22:03:51,294 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-31 22:03:51,294 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:03:51,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-31 22:03:51,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-31 22:03:51,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-31 22:03:51,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:51,329 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;@5053a568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:51,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:03:51,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:03:51,350 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-31 22:03:51,350 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:03:51,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:51,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:51,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:03:51,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2139187037, now seen corresponding path program 1 times [2024-10-31 22:03:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:51,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63175104] [2024-10-31 22:03:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:52,098 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 22:03:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63175104] [2024-10-31 22:03:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63175104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:52,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:52,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910306482] [2024-10-31 22:03:52,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:52,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:52,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:03:52,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:52,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:52,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:03:52,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:53,434 INFO L124 PetriNetUnfolderBase]: 4194/5650 cut-off events. [2024-10-31 22:03:53,434 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-10-31 22:03:53,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11530 conditions, 5650 events. 4194/5650 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23579 event pairs, 1230 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 10708. Up to 2621 conditions per place. [2024-10-31 22:03:53,485 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 93 selfloop transitions, 13 changer transitions 1/108 dead transitions. [2024-10-31 22:03:53,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 108 transitions, 475 flow [2024-10-31 22:03:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:03:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-31 22:03:53,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-31 22:03:53,504 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 128 transitions. [2024-10-31 22:03:53,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 108 transitions, 475 flow [2024-10-31 22:03:53,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 108 transitions, 445 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:03:53,521 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 174 flow [2024-10-31 22:03:53,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2024-10-31 22:03:53,530 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-10-31 22:03:53,530 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 174 flow [2024-10-31 22:03:53,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:53,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:53,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:53,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:53,531 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:03:53,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash -251997727, now seen corresponding path program 2 times [2024-10-31 22:03:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:53,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908204112] [2024-10-31 22:03:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:53,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:53,862 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 22:03:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908204112] [2024-10-31 22:03:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908204112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:53,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:53,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376150678] [2024-10-31 22:03:53,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:53,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:53,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:53,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:03:53,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:53,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:53,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:03:53,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:55,080 INFO L124 PetriNetUnfolderBase]: 5362/7396 cut-off events. [2024-10-31 22:03:55,080 INFO L125 PetriNetUnfolderBase]: For 1555/1555 co-relation queries the response was YES. [2024-10-31 22:03:55,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 7396 events. 5362/7396 cut-off events. For 1555/1555 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34845 event pairs, 2679 based on Foata normal form. 1/6215 useless extension candidates. Maximal degree in co-relation 11899. Up to 5325 conditions per place. [2024-10-31 22:03:55,133 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 107 selfloop transitions, 7 changer transitions 3/118 dead transitions. [2024-10-31 22:03:55,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 118 transitions, 596 flow [2024-10-31 22:03:55,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:03:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-31 22:03:55,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-10-31 22:03:55,136 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 174 flow. Second operand 5 states and 123 transitions. [2024-10-31 22:03:55,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 118 transitions, 596 flow [2024-10-31 22:03:55,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 118 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:03:55,154 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 239 flow [2024-10-31 22:03:55,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-10-31 22:03:55,155 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-10-31 22:03:55,155 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 239 flow [2024-10-31 22:03:55,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:55,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:55,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:55,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:03:55,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:03:55,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -864762781, now seen corresponding path program 3 times [2024-10-31 22:03:55,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:55,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868117804] [2024-10-31 22:03:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:55,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:55,388 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 22:03:55,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:55,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868117804] [2024-10-31 22:03:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868117804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:55,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132775896] [2024-10-31 22:03:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:55,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:55,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:03:55,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:55,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:03:55,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:56,670 INFO L124 PetriNetUnfolderBase]: 6533/9128 cut-off events. [2024-10-31 22:03:56,670 INFO L125 PetriNetUnfolderBase]: For 4945/4945 co-relation queries the response was YES. [2024-10-31 22:03:56,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22776 conditions, 9128 events. 6533/9128 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44925 event pairs, 3289 based on Foata normal form. 1/7963 useless extension candidates. Maximal degree in co-relation 16270. Up to 5817 conditions per place. [2024-10-31 22:03:56,802 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 104 selfloop transitions, 17 changer transitions 1/123 dead transitions. [2024-10-31 22:03:56,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 685 flow [2024-10-31 22:03:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:03:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-31 22:03:56,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-10-31 22:03:56,807 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 239 flow. Second operand 5 states and 129 transitions. [2024-10-31 22:03:56,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 685 flow [2024-10-31 22:03:56,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 675 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:56,852 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 377 flow [2024-10-31 22:03:56,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2024-10-31 22:03:56,854 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-10-31 22:03:56,855 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 377 flow [2024-10-31 22:03:56,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:56,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:56,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:56,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:56,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:03:56,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash 357230847, now seen corresponding path program 4 times [2024-10-31 22:03:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:56,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349297659] [2024-10-31 22:03:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:57,177 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 22:03:57,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:57,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349297659] [2024-10-31 22:03:57,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349297659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:57,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:57,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644189886] [2024-10-31 22:03:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:57,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:57,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:03:57,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:57,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:57,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:03:57,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:58,889 INFO L124 PetriNetUnfolderBase]: 7280/10189 cut-off events. [2024-10-31 22:03:58,890 INFO L125 PetriNetUnfolderBase]: For 11173/11173 co-relation queries the response was YES. [2024-10-31 22:03:58,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27719 conditions, 10189 events. 7280/10189 cut-off events. For 11173/11173 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 52283 event pairs, 3488 based on Foata normal form. 1/8862 useless extension candidates. Maximal degree in co-relation 20100. Up to 6616 conditions per place. [2024-10-31 22:03:59,030 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 124 selfloop transitions, 22 changer transitions 1/148 dead transitions. [2024-10-31 22:03:59,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 987 flow [2024-10-31 22:03:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:03:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-31 22:03:59,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-10-31 22:03:59,033 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 377 flow. Second operand 5 states and 131 transitions. [2024-10-31 22:03:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 987 flow [2024-10-31 22:03:59,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 947 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-10-31 22:03:59,138 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 591 flow [2024-10-31 22:03:59,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2024-10-31 22:03:59,140 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-31 22:03:59,140 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 591 flow [2024-10-31 22:03:59,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:59,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:59,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:59,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:03:59,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:03:59,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2126149539, now seen corresponding path program 5 times [2024-10-31 22:03:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729864910] [2024-10-31 22:03:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:59,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:59,443 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 22:03:59,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729864910] [2024-10-31 22:03:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729864910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:59,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:59,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791772188] [2024-10-31 22:03:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:59,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:59,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:59,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:03:59,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:03:59,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:59,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:03:59,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:01,107 INFO L124 PetriNetUnfolderBase]: 7280/10187 cut-off events. [2024-10-31 22:04:01,107 INFO L125 PetriNetUnfolderBase]: For 16282/16282 co-relation queries the response was YES. [2024-10-31 22:04:01,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29616 conditions, 10187 events. 7280/10187 cut-off events. For 16282/16282 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51714 event pairs, 3752 based on Foata normal form. 1/9128 useless extension candidates. Maximal degree in co-relation 28424. Up to 6705 conditions per place. [2024-10-31 22:04:01,203 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 123 selfloop transitions, 11 changer transitions 3/138 dead transitions. [2024-10-31 22:04:01,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 1037 flow [2024-10-31 22:04:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:04:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:04:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-10-31 22:04:01,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-10-31 22:04:01,206 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 591 flow. Second operand 5 states and 121 transitions. [2024-10-31 22:04:01,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 1037 flow [2024-10-31 22:04:01,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1029 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:01,341 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 616 flow [2024-10-31 22:04:01,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-10-31 22:04:01,345 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-10-31 22:04:01,345 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 616 flow [2024-10-31 22:04:01,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:04:01,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:01,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:01,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:04:01,346 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:01,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1870528389, now seen corresponding path program 6 times [2024-10-31 22:04:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:01,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048458656] [2024-10-31 22:04:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:01,639 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 22:04:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048458656] [2024-10-31 22:04:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048458656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:04:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848685200] [2024-10-31 22:04:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:01,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:04:01,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:04:01,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:04:01,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:01,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:04:01,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:03,510 INFO L124 PetriNetUnfolderBase]: 7463/10420 cut-off events. [2024-10-31 22:04:03,510 INFO L125 PetriNetUnfolderBase]: For 19317/19317 co-relation queries the response was YES. [2024-10-31 22:04:03,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30746 conditions, 10420 events. 7463/10420 cut-off events. For 19317/19317 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 52850 event pairs, 2328 based on Foata normal form. 1/9332 useless extension candidates. Maximal degree in co-relation 30154. Up to 4720 conditions per place. [2024-10-31 22:04:03,593 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 45 changer transitions 1/152 dead transitions. [2024-10-31 22:04:03,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 1179 flow [2024-10-31 22:04:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:04:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:04:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-31 22:04:03,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-31 22:04:03,595 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 616 flow. Second operand 5 states and 128 transitions. [2024-10-31 22:04:03,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 1179 flow [2024-10-31 22:04:03,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 152 transitions, 1156 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:03,682 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 859 flow [2024-10-31 22:04:03,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2024-10-31 22:04:03,684 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-10-31 22:04:03,686 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 859 flow [2024-10-31 22:04:03,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 22:04:03,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:03,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:03,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:04:03,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:03,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1888763971, now seen corresponding path program 1 times [2024-10-31 22:04:03,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:03,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315144826] [2024-10-31 22:04:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:03,994 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 22:04:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315144826] [2024-10-31 22:04:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315144826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:04:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460849856] [2024-10-31 22:04:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:03,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:03,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:04:03,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 22:04:03,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:03,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:04:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:06,136 INFO L124 PetriNetUnfolderBase]: 13070/18041 cut-off events. [2024-10-31 22:04:06,136 INFO L125 PetriNetUnfolderBase]: For 44989/44989 co-relation queries the response was YES. [2024-10-31 22:04:06,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58616 conditions, 18041 events. 13070/18041 cut-off events. For 44989/44989 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 98471 event pairs, 5015 based on Foata normal form. 5/16139 useless extension candidates. Maximal degree in co-relation 49617. Up to 7331 conditions per place. [2024-10-31 22:04:06,283 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 164 selfloop transitions, 23 changer transitions 8/196 dead transitions. [2024-10-31 22:04:06,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 196 transitions, 1880 flow [2024-10-31 22:04:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-31 22:04:06,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-10-31 22:04:06,286 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 859 flow. Second operand 6 states and 135 transitions. [2024-10-31 22:04:06,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 196 transitions, 1880 flow [2024-10-31 22:04:06,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1794 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:06,737 INFO L231 Difference]: Finished difference. Result has 81 places, 112 transitions, 988 flow [2024-10-31 22:04:06,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=81, PETRI_TRANSITIONS=112} [2024-10-31 22:04:06,738 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-10-31 22:04:06,738 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 112 transitions, 988 flow [2024-10-31 22:04:06,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 22:04:06,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:06,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:06,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:04:06,739 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:06,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash 428945330, now seen corresponding path program 1 times [2024-10-31 22:04:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:06,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896597238] [2024-10-31 22:04:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:06,957 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 22:04:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896597238] [2024-10-31 22:04:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896597238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:06,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:04:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144493524] [2024-10-31 22:04:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:06,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:06,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:04:06,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 112 transitions, 988 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 22:04:06,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:06,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:04:06,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:10,083 INFO L124 PetriNetUnfolderBase]: 20914/28531 cut-off events. [2024-10-31 22:04:10,084 INFO L125 PetriNetUnfolderBase]: For 80443/80443 co-relation queries the response was YES. [2024-10-31 22:04:10,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96856 conditions, 28531 events. 20914/28531 cut-off events. For 80443/80443 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 158238 event pairs, 8224 based on Foata normal form. 5/25421 useless extension candidates. Maximal degree in co-relation 87865. Up to 10761 conditions per place. [2024-10-31 22:04:10,269 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 181 selfloop transitions, 25 changer transitions 41/248 dead transitions. [2024-10-31 22:04:10,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 248 transitions, 2514 flow [2024-10-31 22:04:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-10-31 22:04:10,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-31 22:04:10,271 INFO L175 Difference]: Start difference. First operand has 81 places, 112 transitions, 988 flow. Second operand 6 states and 154 transitions. [2024-10-31 22:04:10,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 248 transitions, 2514 flow [2024-10-31 22:04:10,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 248 transitions, 2469 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:10,958 INFO L231 Difference]: Finished difference. Result has 89 places, 124 transitions, 1167 flow [2024-10-31 22:04:10,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1167, PETRI_PLACES=89, PETRI_TRANSITIONS=124} [2024-10-31 22:04:10,960 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-10-31 22:04:10,960 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 124 transitions, 1167 flow [2024-10-31 22:04:10,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 22:04:10,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:10,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:10,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:04:10,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:10,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash -526697336, now seen corresponding path program 1 times [2024-10-31 22:04:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:10,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829436353] [2024-10-31 22:04:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:10,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:11,114 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 22:04:11,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829436353] [2024-10-31 22:04:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829436353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:11,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:11,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:04:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829254309] [2024-10-31 22:04:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:11,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:11,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:11,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:11,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:04:11,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:04:11,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 124 transitions, 1167 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 22:04:11,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:11,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:04:11,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:14,313 INFO L124 PetriNetUnfolderBase]: 19486/26684 cut-off events. [2024-10-31 22:04:14,314 INFO L125 PetriNetUnfolderBase]: For 82185/82185 co-relation queries the response was YES. [2024-10-31 22:04:14,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92886 conditions, 26684 events. 19486/26684 cut-off events. For 82185/82185 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 145791 event pairs, 5820 based on Foata normal form. 1/23742 useless extension candidates. Maximal degree in co-relation 92762. Up to 13657 conditions per place. [2024-10-31 22:04:14,479 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 185 selfloop transitions, 23 changer transitions 17/226 dead transitions. [2024-10-31 22:04:14,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 226 transitions, 2407 flow [2024-10-31 22:04:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:04:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:04:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-31 22:04:14,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-10-31 22:04:14,481 INFO L175 Difference]: Start difference. First operand has 89 places, 124 transitions, 1167 flow. Second operand 5 states and 127 transitions. [2024-10-31 22:04:14,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 226 transitions, 2407 flow [2024-10-31 22:04:14,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 226 transitions, 2352 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:14,836 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1366 flow [2024-10-31 22:04:14,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1366, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-10-31 22:04:14,837 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-10-31 22:04:14,837 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1366 flow [2024-10-31 22:04:14,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 22:04:14,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:14,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:14,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:04:14,838 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:14,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1684842140, now seen corresponding path program 2 times [2024-10-31 22:04:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:14,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768285844] [2024-10-31 22:04:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:14,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:15,013 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 22:04:15,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:15,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768285844] [2024-10-31 22:04:15,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768285844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:15,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:15,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:04:15,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675104471] [2024-10-31 22:04:15,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:15,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:15,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:15,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:04:15,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-31 22:04:15,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1366 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 22:04:15,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:15,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-31 22:04:15,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand