./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/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_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/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_861105b5-c78c-4400-b9ad-ee7cd50c3d08/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 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:30,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:30,194 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:13:30,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:30,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:30,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:30,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:30,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:30,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:30,242 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:30,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:30,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:30,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:30,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:30,244 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:30,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:30,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:30,245 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:13:30,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:30,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:13:30,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:30,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:30,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:30,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:30,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:30,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:13:30,248 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:30,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:30,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:30,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:30,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:30,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:30,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:30,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:30,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:30,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:30,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:30,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:30,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:30,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:30,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:30,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:30,255 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_861105b5-c78c-4400-b9ad-ee7cd50c3d08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-10-31 22:13:30,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:30,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:30,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:30,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:30,591 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:30,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c Unable to find full path for "g++" [2024-10-31 22:13:32,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:32,897 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:32,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-10-31 22:13:32,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/data/a8ee5aabf/d086df652f9e47baab5512edd8735d22/FLAG42967b48e [2024-10-31 22:13:32,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/data/a8ee5aabf/d086df652f9e47baab5512edd8735d22 [2024-10-31 22:13:32,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:32,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:32,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:32,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:32,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:32,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:32" (1/1) ... [2024-10-31 22:13:32,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25508207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:32, skipping insertion in model container [2024-10-31 22:13:32,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:32" (1/1) ... [2024-10-31 22:13:32,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:33,377 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_861105b5-c78c-4400-b9ad-ee7cd50c3d08/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-10-31 22:13:33,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:33,398 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:33,464 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_861105b5-c78c-4400-b9ad-ee7cd50c3d08/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-10-31 22:13:33,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:33,488 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:33,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33 WrapperNode [2024-10-31 22:13:33,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:33,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:33,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:33,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:33,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,625 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1559 [2024-10-31 22:13:33,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:33,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:33,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:33,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:33,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,707 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-10-31 22:13:33,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:33,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:33,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:33,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:33,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (1/1) ... [2024-10-31 22:13:33,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:33,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:33,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:33,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:13:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:13:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:13:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:13:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:13:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:13:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:13:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:13:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:13:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:13:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:13:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:13:33,926 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 22:13:34,188 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:34,191 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:36,400 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:13:36,401 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:38,665 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:38,666 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-31 22:13:38,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:38 BoogieIcfgContainer [2024-10-31 22:13:38,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:38,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:38,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:38,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:38,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:32" (1/3) ... [2024-10-31 22:13:38,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b941dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:38, skipping insertion in model container [2024-10-31 22:13:38,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:33" (2/3) ... [2024-10-31 22:13:38,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b941dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:38, skipping insertion in model container [2024-10-31 22:13:38,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:38" (3/3) ... [2024-10-31 22:13:38,677 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-10-31 22:13:38,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:38,699 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:13:38,699 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:13:39,115 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:13:39,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 94 transitions, 202 flow [2024-10-31 22:13:39,246 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-10-31 22:13:39,246 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:13:39,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 28/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 242 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-10-31 22:13:39,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 94 transitions, 202 flow [2024-10-31 22:13:39,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 91 transitions, 194 flow [2024-10-31 22:13:39,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:39,278 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;@7743749c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:39,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-31 22:13:39,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:13:39,385 INFO L124 PetriNetUnfolderBase]: 28/90 cut-off events. [2024-10-31 22:13:39,386 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:13:39,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:39,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:39,387 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 22:13:39,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -901911410, now seen corresponding path program 1 times [2024-10-31 22:13:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:39,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585647222] [2024-10-31 22:13:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:39,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:40,189 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 22:13:40,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:40,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585647222] [2024-10-31 22:13:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585647222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:40,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:13:40,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016541471] [2024-10-31 22:13:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:40,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:40,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:40,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 22:13:40,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:40,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:40,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:42,251 INFO L124 PetriNetUnfolderBase]: 2502/3740 cut-off events. [2024-10-31 22:13:42,251 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-31 22:13:42,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 3740 events. 2502/3740 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17699 event pairs, 1702 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 7372. Up to 3738 conditions per place. [2024-10-31 22:13:42,297 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 84 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-10-31 22:13:42,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 366 flow [2024-10-31 22:13:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-10-31 22:13:42,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36524822695035464 [2024-10-31 22:13:42,317 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 194 flow. Second operand 3 states and 103 transitions. [2024-10-31 22:13:42,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 366 flow [2024-10-31 22:13:42,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:13:42,327 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 200 flow [2024-10-31 22:13:42,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2024-10-31 22:13:42,334 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-10-31 22:13:42,335 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 200 flow [2024-10-31 22:13:42,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 22:13:42,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:42,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:42,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:42,336 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 22:13:42,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:42,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1016506388, now seen corresponding path program 1 times [2024-10-31 22:13:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:42,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138480330] [2024-10-31 22:13:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:42,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:13:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138480330] [2024-10-31 22:13:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138480330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:42,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:42,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:13:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699522239] [2024-10-31 22:13:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:42,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:13:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:13:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:13:42,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:42,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 22:13:42,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:42,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:42,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:44,106 INFO L124 PetriNetUnfolderBase]: 2502/3742 cut-off events. [2024-10-31 22:13:44,106 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-31 22:13:44,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3742 events. 2502/3742 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17721 event pairs, 1702 based on Foata normal form. 0/2944 useless extension candidates. Maximal degree in co-relation 7472. Up to 3738 conditions per place. [2024-10-31 22:13:44,125 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 82 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-10-31 22:13:44,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 384 flow [2024-10-31 22:13:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:13:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:13:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-31 22:13:44,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35815602836879434 [2024-10-31 22:13:44,129 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 200 flow. Second operand 3 states and 101 transitions. [2024-10-31 22:13:44,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 384 flow [2024-10-31 22:13:44,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:44,132 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 230 flow [2024-10-31 22:13:44,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2024-10-31 22:13:44,133 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-10-31 22:13:44,133 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 230 flow [2024-10-31 22:13:44,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 22:13:44,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:44,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:44,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:44,134 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 22:13:44,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1952730255, now seen corresponding path program 1 times [2024-10-31 22:13:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359571391] [2024-10-31 22:13:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:44,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:13:44,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:44,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359571391] [2024-10-31 22:13:44,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359571391] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:44,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052734418] [2024-10-31 22:13:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:44,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:44,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:44,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:44,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:13:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:44,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:13:44,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:13:45,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:13:45,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052734418] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:45,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:45,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-10-31 22:13:45,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803973189] [2024-10-31 22:13:45,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:45,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:13:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:13:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:13:45,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:45,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 22:13:45,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:45,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:45,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:46,981 INFO L124 PetriNetUnfolderBase]: 2502/3762 cut-off events. [2024-10-31 22:13:46,982 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-31 22:13:46,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3762 events. 2502/3762 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17721 event pairs, 1702 based on Foata normal form. 8/2973 useless extension candidates. Maximal degree in co-relation 7481. Up to 3738 conditions per place. [2024-10-31 22:13:47,001 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-10-31 22:13:47,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 514 flow [2024-10-31 22:13:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:13:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:13:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-10-31 22:13:47,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2047872340425532 [2024-10-31 22:13:47,004 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 230 flow. Second operand 8 states and 154 transitions. [2024-10-31 22:13:47,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 514 flow [2024-10-31 22:13:47,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:47,008 INFO L231 Difference]: Finished difference. Result has 80 places, 111 transitions, 408 flow [2024-10-31 22:13:47,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=408, PETRI_PLACES=80, PETRI_TRANSITIONS=111} [2024-10-31 22:13:47,009 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-10-31 22:13:47,009 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 111 transitions, 408 flow [2024-10-31 22:13:47,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 22:13:47,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:47,010 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:47,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:13:47,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:47,215 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 22:13:47,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1433088952, now seen corresponding path program 1 times [2024-10-31 22:13:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015608149] [2024-10-31 22:13:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-31 22:13:47,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:47,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015608149] [2024-10-31 22:13:47,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015608149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854720393] [2024-10-31 22:13:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:47,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:47,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:13:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:48,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:13:48,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-31 22:13:48,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-31 22:13:48,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854720393] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:48,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:48,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-31 22:13:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411574671] [2024-10-31 22:13:48,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:48,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:13:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:13:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:13:48,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:48,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 111 transitions, 408 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 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 22:13:48,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:48,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:50,054 INFO L124 PetriNetUnfolderBase]: 2502/3774 cut-off events. [2024-10-31 22:13:50,054 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-31 22:13:50,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 3774 events. 2502/3774 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17720 event pairs, 1702 based on Foata normal form. 11/2992 useless extension candidates. Maximal degree in co-relation 7495. Up to 3738 conditions per place. [2024-10-31 22:13:50,075 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-10-31 22:13:50,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 708 flow [2024-10-31 22:13:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:13:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:13:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-10-31 22:13:50,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.16150870406189555 [2024-10-31 22:13:50,078 INFO L175 Difference]: Start difference. First operand has 80 places, 111 transitions, 408 flow. Second operand 11 states and 167 transitions. [2024-10-31 22:13:50,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 708 flow [2024-10-31 22:13:50,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 654 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-31 22:13:50,086 INFO L231 Difference]: Finished difference. Result has 88 places, 123 transitions, 524 flow [2024-10-31 22:13:50,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=524, PETRI_PLACES=88, PETRI_TRANSITIONS=123} [2024-10-31 22:13:50,087 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-10-31 22:13:50,087 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 123 transitions, 524 flow [2024-10-31 22:13:50,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 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 22:13:50,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:50,088 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 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 22:13:50,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:13:50,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:50,289 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 22:13:50,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash 719978097, now seen corresponding path program 2 times [2024-10-31 22:13:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:50,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666212898] [2024-10-31 22:13:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-31 22:13:50,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:50,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666212898] [2024-10-31 22:13:50,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666212898] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111266965] [2024-10-31 22:13:50,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:50,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:50,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:50,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:50,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:13:51,518 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:13:51,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:51,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:13:51,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:51,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:13:51,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-10-31 22:13:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-31 22:13:51,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:13:51,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111266965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:51,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:13:51,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-31 22:13:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599076671] [2024-10-31 22:13:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:51,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:13:51,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:51,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 123 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 22:13:51,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:51,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:51,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:54,007 INFO L124 PetriNetUnfolderBase]: 3916/5918 cut-off events. [2024-10-31 22:13:54,007 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:13:54,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 5918 events. 3916/5918 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30625 event pairs, 1413 based on Foata normal form. 1/4715 useless extension candidates. Maximal degree in co-relation 11775. Up to 3014 conditions per place. [2024-10-31 22:13:54,037 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 197 selfloop transitions, 22 changer transitions 9/229 dead transitions. [2024-10-31 22:13:54,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 229 transitions, 1198 flow [2024-10-31 22:13:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:13:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:13:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-10-31 22:13:54,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44468085106382976 [2024-10-31 22:13:54,040 INFO L175 Difference]: Start difference. First operand has 88 places, 123 transitions, 524 flow. Second operand 5 states and 209 transitions. [2024-10-31 22:13:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 229 transitions, 1198 flow [2024-10-31 22:13:54,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 229 transitions, 1122 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-31 22:13:54,048 INFO L231 Difference]: Finished difference. Result has 91 places, 141 transitions, 591 flow [2024-10-31 22:13:54,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=91, PETRI_TRANSITIONS=141} [2024-10-31 22:13:54,049 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-10-31 22:13:54,049 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 141 transitions, 591 flow [2024-10-31 22:13:54,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 22:13:54,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:54,050 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 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 22:13:54,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:13:54,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:54,254 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 22:13:54,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -489758041, now seen corresponding path program 3 times [2024-10-31 22:13:54,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:54,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25634706] [2024-10-31 22:13:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:54,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-31 22:13:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25634706] [2024-10-31 22:13:54,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25634706] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013167833] [2024-10-31 22:13:54,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:13:54,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:54,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:54,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:13:55,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-31 22:13:55,355 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:55,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:13:55,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:55,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:13:55,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-10-31 22:13:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-31 22:13:55,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:13:55,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013167833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:55,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:13:55,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-31 22:13:55,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150295625] [2024-10-31 22:13:55,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:55,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:55,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:13:55,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:55,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 141 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 22:13:55,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:55,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:55,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:57,725 INFO L124 PetriNetUnfolderBase]: 4031/6134 cut-off events. [2024-10-31 22:13:57,725 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-10-31 22:13:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 6134 events. 4031/6134 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 32437 event pairs, 1419 based on Foata normal form. 1/4899 useless extension candidates. Maximal degree in co-relation 14718. Up to 3289 conditions per place. [2024-10-31 22:13:57,759 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 195 selfloop transitions, 22 changer transitions 9/227 dead transitions. [2024-10-31 22:13:57,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 227 transitions, 1242 flow [2024-10-31 22:13:57,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:13:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:13:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-10-31 22:13:57,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44042553191489364 [2024-10-31 22:13:57,762 INFO L175 Difference]: Start difference. First operand has 91 places, 141 transitions, 591 flow. Second operand 5 states and 207 transitions. [2024-10-31 22:13:57,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 227 transitions, 1242 flow [2024-10-31 22:13:57,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 227 transitions, 1234 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-31 22:13:57,776 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 641 flow [2024-10-31 22:13:57,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2024-10-31 22:13:57,777 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-10-31 22:13:57,778 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 641 flow [2024-10-31 22:13:57,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 22:13:57,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:57,778 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 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 22:13:57,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:13:57,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:13:57,979 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 22:13:57,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2113688169, now seen corresponding path program 1 times [2024-10-31 22:13:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:57,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314098109] [2024-10-31 22:13:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-31 22:13:58,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314098109] [2024-10-31 22:13:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314098109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404778344] [2024-10-31 22:13:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:58,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:58,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:58,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861105b5-c78c-4400-b9ad-ee7cd50c3d08/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:13:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:59,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:13:59,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-31 22:13:59,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-31 22:13:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404778344] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-10-31 22:13:59,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526375230] [2024-10-31 22:13:59,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:59,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 22:13:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:59,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 22:13:59,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=205, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:13:59,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-10-31 22:13:59,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 641 flow. Second operand has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 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 22:13:59,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:59,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-10-31 22:13:59,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand