./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:19:50,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:19:50,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:19:50,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:19:50,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:19:50,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:19:50,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:19:50,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:19:50,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:19:50,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:19:50,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:19:50,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:19:50,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:19:50,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:19:50,999 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:19:51,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:19:51,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:19:51,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:19:51,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:19:51,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:19:51,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:19:51,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:19:51,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:19:51,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:19:51,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:19:51,007 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:19:51,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:19:51,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:19:51,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:19:51,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:19:51,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:19:51,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:19:51,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:19:51,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:19:51,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:19:51,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:19:51,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:19:51,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:19:51,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:19:51,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:19:51,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:19:51,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:19:51,020 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_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-08 17:19:51,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:19:51,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:19:51,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:19:51,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:19:51,390 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:19:51,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c Unable to find full path for "g++" [2024-11-08 17:19:53,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:19:54,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:19:54,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-08 17:19:54,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/data/4b1ea757c/17bcc3e43d7c42a59aeb589ca1c0f78d/FLAGd8a169593 [2024-11-08 17:19:54,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/data/4b1ea757c/17bcc3e43d7c42a59aeb589ca1c0f78d [2024-11-08 17:19:54,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:19:54,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:19:54,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:19:54,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:19:54,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:19:54,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135dda18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54, skipping insertion in model container [2024-11-08 17:19:54,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,318 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:19:54,652 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-08 17:19:54,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:19:54,689 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:19:54,742 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2862,2875] [2024-11-08 17:19:54,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:19:54,786 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:19:54,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54 WrapperNode [2024-11-08 17:19:54,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:19:54,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:19:54,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:19:54,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:19:54,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,868 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 218 [2024-11-08 17:19:54,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:19:54,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:19:54,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:19:54,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:19:54,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,941 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-08 17:19:54,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:54,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:19:54,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:19:54,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:19:54,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:19:54,999 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (1/1) ... [2024-11-08 17:19:55,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:19:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:19:55,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:19:55,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:19:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:19:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:19:55,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:19:55,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:19:55,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:19:55,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:19:55,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:19:55,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:19:55,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:19:55,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:19:55,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:19:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:19:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:19:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:19:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:19:55,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:19:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:19:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:19:55,095 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:19:55,272 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:19:55,275 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:19:55,922 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:19:55,923 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:19:56,383 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:19:56,383 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:19:56,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:19:56 BoogieIcfgContainer [2024-11-08 17:19:56,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:19:56,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:19:56,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:19:56,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:19:56,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:19:54" (1/3) ... [2024-11-08 17:19:56,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35458c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:19:56, skipping insertion in model container [2024-11-08 17:19:56,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:19:54" (2/3) ... [2024-11-08 17:19:56,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35458c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:19:56, skipping insertion in model container [2024-11-08 17:19:56,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:19:56" (3/3) ... [2024-11-08 17:19:56,400 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-08 17:19:56,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:19:56,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:19:56,423 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:19:56,553 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:19:56,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 57 transitions, 135 flow [2024-11-08 17:19:56,668 INFO L124 PetriNetUnfolderBase]: 13/54 cut-off events. [2024-11-08 17:19:56,668 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:19:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 13/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-08 17:19:56,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 57 transitions, 135 flow [2024-11-08 17:19:56,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 53 transitions, 124 flow [2024-11-08 17:19:56,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:19:56,704 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;@5af0f954, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:19:56,709 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:19:56,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:19:56,736 INFO L124 PetriNetUnfolderBase]: 13/52 cut-off events. [2024-11-08 17:19:56,736 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:19:56,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:56,737 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] [2024-11-08 17:19:56,738 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)] === [2024-11-08 17:19:56,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:56,743 INFO L85 PathProgramCache]: Analyzing trace with hash -987795750, now seen corresponding path program 1 times [2024-11-08 17:19:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568854800] [2024-11-08 17:19:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:19:57,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568854800] [2024-11-08 17:19:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568854800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:57,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:57,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:19:57,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595751786] [2024-11-08 17:19:57,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:57,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:19:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:19:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:19:57,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-08 17:19:57,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:57,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:57,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-08 17:19:57,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:57,646 INFO L124 PetriNetUnfolderBase]: 396/726 cut-off events. [2024-11-08 17:19:57,647 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-08 17:19:57,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 726 events. 396/726 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3398 event pairs, 230 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 1089. Up to 498 conditions per place. [2024-11-08 17:19:57,659 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 33 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-11-08 17:19:57,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 196 flow [2024-11-08 17:19:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:19:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:19:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-08 17:19:57,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6023391812865497 [2024-11-08 17:19:57,679 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 124 flow. Second operand 3 states and 103 transitions. [2024-11-08 17:19:57,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 196 flow [2024-11-08 17:19:57,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:19:57,688 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 126 flow [2024-11-08 17:19:57,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-11-08 17:19:57,694 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2024-11-08 17:19:57,695 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 126 flow [2024-11-08 17:19:57,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:57,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:57,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:57,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:19:57,697 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)] === [2024-11-08 17:19:57,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1671372737, now seen corresponding path program 1 times [2024-11-08 17:19:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797437482] [2024-11-08 17:19:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:19:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:57,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797437482] [2024-11-08 17:19:57,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797437482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:57,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:57,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:19:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703256229] [2024-11-08 17:19:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:57,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:19:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:19:57,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:19:58,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-08 17:19:58,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:58,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:58,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-08 17:19:58,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:58,274 INFO L124 PetriNetUnfolderBase]: 396/730 cut-off events. [2024-11-08 17:19:58,274 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-08 17:19:58,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 730 events. 396/730 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3400 event pairs, 230 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 1244. Up to 497 conditions per place. [2024-11-08 17:19:58,284 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 31 selfloop transitions, 6 changer transitions 0/56 dead transitions. [2024-11-08 17:19:58,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 204 flow [2024-11-08 17:19:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:19:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:19:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-08 17:19:58,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2024-11-08 17:19:58,289 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 126 flow. Second operand 4 states and 129 transitions. [2024-11-08 17:19:58,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 204 flow [2024-11-08 17:19:58,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:19:58,293 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 158 flow [2024-11-08 17:19:58,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2024-11-08 17:19:58,295 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-11-08 17:19:58,297 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 158 flow [2024-11-08 17:19:58,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:58,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:58,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:58,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:19:58,298 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)] === [2024-11-08 17:19:58,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash -387134305, now seen corresponding path program 1 times [2024-11-08 17:19:58,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:58,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305456953] [2024-11-08 17:19:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:19:58,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:58,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305456953] [2024-11-08 17:19:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305456953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:58,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:19:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709656151] [2024-11-08 17:19:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:58,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:19:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:19:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:19:58,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-08 17:19:58,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:58,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:58,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-08 17:19:58,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:58,789 INFO L124 PetriNetUnfolderBase]: 588/1150 cut-off events. [2024-11-08 17:19:58,789 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-08 17:19:58,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 1150 events. 588/1150 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5931 event pairs, 172 based on Foata normal form. 1/960 useless extension candidates. Maximal degree in co-relation 1854. Up to 361 conditions per place. [2024-11-08 17:19:58,801 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 41 selfloop transitions, 2 changer transitions 1/69 dead transitions. [2024-11-08 17:19:58,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 275 flow [2024-11-08 17:19:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:19:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:19:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-08 17:19:58,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-08 17:19:58,807 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 158 flow. Second operand 3 states and 126 transitions. [2024-11-08 17:19:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 275 flow [2024-11-08 17:19:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:19:58,811 INFO L231 Difference]: Finished difference. Result has 51 places, 57 transitions, 164 flow [2024-11-08 17:19:58,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=57} [2024-11-08 17:19:58,813 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2024-11-08 17:19:58,814 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 57 transitions, 164 flow [2024-11-08 17:19:58,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:58,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:58,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:58,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:19:58,815 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)] === [2024-11-08 17:19:58,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash -373951053, now seen corresponding path program 1 times [2024-11-08 17:19:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:58,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657313413] [2024-11-08 17:19:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:59,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:59,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657313413] [2024-11-08 17:19:59,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657313413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:19:59,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334493051] [2024-11-08 17:19:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:59,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:19:59,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:19:59,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:19:59,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:19:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:59,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:19:59,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:19:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:59,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:19:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334493051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:19:59,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:19:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:19:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204628892] [2024-11-08 17:19:59,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:19:59,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:19:59,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:19:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:19:59,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-11-08 17:19:59,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 57 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:19:59,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:59,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-11-08 17:19:59,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:00,418 INFO L124 PetriNetUnfolderBase]: 1328/2096 cut-off events. [2024-11-08 17:20:00,418 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-08 17:20:00,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 2096 events. 1328/2096 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9494 event pairs, 506 based on Foata normal form. 0/1873 useless extension candidates. Maximal degree in co-relation 3051. Up to 880 conditions per place. [2024-11-08 17:20:00,432 INFO L140 encePairwiseOnDemand]: 37/57 looper letters, 44 selfloop transitions, 17 changer transitions 66/139 dead transitions. [2024-11-08 17:20:00,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 139 transitions, 648 flow [2024-11-08 17:20:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:20:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 17:20:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-11-08 17:20:00,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46570972886762363 [2024-11-08 17:20:00,435 INFO L175 Difference]: Start difference. First operand has 51 places, 57 transitions, 164 flow. Second operand 11 states and 292 transitions. [2024-11-08 17:20:00,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 139 transitions, 648 flow [2024-11-08 17:20:00,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 139 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:20:00,440 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 242 flow [2024-11-08 17:20:00,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=242, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-08 17:20:00,441 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2024-11-08 17:20:00,441 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 242 flow [2024-11-08 17:20:00,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:00,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:00,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:00,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:20:00,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:00,643 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)] === [2024-11-08 17:20:00,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1044544068, now seen corresponding path program 2 times [2024-11-08 17:20:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547764168] [2024-11-08 17:20:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:20:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547764168] [2024-11-08 17:20:00,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547764168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213992862] [2024-11-08 17:20:00,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:20:00,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:00,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:00,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:00,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:20:01,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:20:01,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:20:01,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:20:01,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 17:20:01,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:20:01,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213992862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:01,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:20:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-08 17:20:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523791385] [2024-11-08 17:20:01,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:01,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:20:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:01,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:20:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:20:01,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-11-08 17:20:01,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:01,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:01,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-11-08 17:20:01,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:01,923 INFO L124 PetriNetUnfolderBase]: 2559/3959 cut-off events. [2024-11-08 17:20:01,923 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-11-08 17:20:01,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 3959 events. 2559/3959 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21899 event pairs, 691 based on Foata normal form. 21/3487 useless extension candidates. Maximal degree in co-relation 8221. Up to 1788 conditions per place. [2024-11-08 17:20:01,954 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 101 selfloop transitions, 8 changer transitions 4/133 dead transitions. [2024-11-08 17:20:01,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 133 transitions, 652 flow [2024-11-08 17:20:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:20:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:20:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2024-11-08 17:20:01,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-08 17:20:01,956 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 242 flow. Second operand 7 states and 266 transitions. [2024-11-08 17:20:01,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 133 transitions, 652 flow [2024-11-08 17:20:01,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 133 transitions, 614 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-08 17:20:01,990 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 276 flow [2024-11-08 17:20:01,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-11-08 17:20:01,991 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2024-11-08 17:20:01,991 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 276 flow [2024-11-08 17:20:01,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:01,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:01,992 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:02,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:20:02,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:02,193 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)] === [2024-11-08 17:20:02,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1153321622, now seen corresponding path program 3 times [2024-11-08 17:20:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694415350] [2024-11-08 17:20:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:20:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:02,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694415350] [2024-11-08 17:20:02,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694415350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966984755] [2024-11-08 17:20:02,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:20:02,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:02,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:02,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:02,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:20:02,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:20:02,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:20:02,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:20:02,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 17:20:02,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 17:20:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966984755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:20:02,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:20:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 17:20:02,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484164003] [2024-11-08 17:20:02,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:20:02,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:20:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:20:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:20:02,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-08 17:20:02,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:02,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:02,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-08 17:20:02,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:04,694 INFO L124 PetriNetUnfolderBase]: 3944/6024 cut-off events. [2024-11-08 17:20:04,694 INFO L125 PetriNetUnfolderBase]: For 3279/3279 co-relation queries the response was YES. [2024-11-08 17:20:04,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14086 conditions, 6024 events. 3944/6024 cut-off events. For 3279/3279 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 32545 event pairs, 115 based on Foata normal form. 756/6559 useless extension candidates. Maximal degree in co-relation 14041. Up to 1967 conditions per place. [2024-11-08 17:20:04,744 INFO L140 encePairwiseOnDemand]: 39/57 looper letters, 152 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-11-08 17:20:04,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 201 transitions, 1049 flow [2024-11-08 17:20:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:20:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 17:20:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 387 transitions. [2024-11-08 17:20:04,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37719298245614036 [2024-11-08 17:20:04,747 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 276 flow. Second operand 18 states and 387 transitions. [2024-11-08 17:20:04,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 201 transitions, 1049 flow [2024-11-08 17:20:04,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 201 transitions, 985 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-11-08 17:20:04,826 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 485 flow [2024-11-08 17:20:04,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=485, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-08 17:20:04,830 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2024-11-08 17:20:04,831 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 485 flow [2024-11-08 17:20:04,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:20:04,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:04,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:04,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:20:05,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:05,034 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)] === [2024-11-08 17:20:05,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1046982865, now seen corresponding path program 1 times [2024-11-08 17:20:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:05,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556597199] [2024-11-08 17:20:05,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556597199] [2024-11-08 17:20:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556597199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:09,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503134900] [2024-11-08 17:20:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:09,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:09,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:09,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb27ebe9-a352-4cec-893c-61b4218950c2/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:20:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:09,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 17:20:09,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:10,366 INFO L349 Elim1Store]: treesize reduction 80, result has 60.2 percent of original size [2024-11-08 17:20:10,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 135 treesize of output 171 [2024-11-08 17:20:59,322 WARN L286 SmtUtils]: Spent 13.76s on a formula simplification. DAG size of input: 826 DAG size of output: 817 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 17:23:48,854 WARN L286 SmtUtils]: Spent 7.71s on a formula simplification that was a NOOP. DAG size: 820 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)