./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.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_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/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_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/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_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/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 4b21640b39ce7bcc8ee8415d7ec787ca73953d49130bebf43478653d490e2460 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:00:13,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:00:14,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:00:14,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:00:14,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:00:14,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:00:14,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:00:14,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:00:14,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:00:14,076 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:00:14,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:00:14,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:00:14,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:00:14,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:00:14,078 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:00:14,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:00:14,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:00:14,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:00:14,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:00:14,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:00:14,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:00:14,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:00:14,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:00:14,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:00:14,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:00:14,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:00:14,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:00:14,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:00:14,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:00:14,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:00:14,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:00:14,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:00:14,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:00:14,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:00:14,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:00:14,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:00:14,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:00:14,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:00:14,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:00:14,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:00:14,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:00:14,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:00:14,099 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_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b21640b39ce7bcc8ee8415d7ec787ca73953d49130bebf43478653d490e2460 [2024-11-08 19:00:14,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:00:14,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:00:14,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:00:14,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:00:14,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:00:14,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c Unable to find full path for "g++" [2024-11-08 19:00:16,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:00:16,691 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:00:16,691 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-11-08 19:00:16,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/data/541356307/14c57d5d5a2643ae8b69b7e383fd5059/FLAG95804067a [2024-11-08 19:00:16,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/data/541356307/14c57d5d5a2643ae8b69b7e383fd5059 [2024-11-08 19:00:16,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:00:16,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:00:16,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:00:16,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:00:16,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:00:16,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:00:16" (1/1) ... [2024-11-08 19:00:16,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784fbed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:16, skipping insertion in model container [2024-11-08 19:00:16,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:00:16" (1/1) ... [2024-11-08 19:00:16,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:00:17,047 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_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2043,2056] [2024-11-08 19:00:17,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:00:17,065 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:00:17,088 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_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2043,2056] [2024-11-08 19:00:17,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:00:17,111 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:00:17,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17 WrapperNode [2024-11-08 19:00:17,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:00:17,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:00:17,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:00:17,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:00:17,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,146 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2024-11-08 19:00:17,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:00:17,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:00:17,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:00:17,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:00:17,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,178 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:00:17,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:00:17,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:00:17,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:00:17,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:00:17,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (1/1) ... [2024-11-08 19:00:17,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:00:17,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:17,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:00:17,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:00:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:00:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 19:00:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 19:00:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 19:00:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 19:00:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:00:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:00:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:00:17,309 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 19:00:17,436 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:00:17,439 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:00:17,739 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:00:17,740 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:00:17,884 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:00:17,884 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:00:17,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:17 BoogieIcfgContainer [2024-11-08 19:00:17,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:00:17,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:00:17,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:00:17,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:00:17,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:00:16" (1/3) ... [2024-11-08 19:00:17,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1083456a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:00:17, skipping insertion in model container [2024-11-08 19:00:17,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:00:17" (2/3) ... [2024-11-08 19:00:17,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1083456a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:00:17, skipping insertion in model container [2024-11-08 19:00:17,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:17" (3/3) ... [2024-11-08 19:00:17,897 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-11-08 19:00:17,914 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:00:17,914 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:00:17,915 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:00:17,994 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 19:00:18,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 82 flow [2024-11-08 19:00:18,087 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-11-08 19:00:18,091 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 19:00:18,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 4/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-08 19:00:18,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 82 flow [2024-11-08 19:00:18,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 74 flow [2024-11-08 19:00:18,124 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:00:18,138 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;@4414f332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:00:18,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-08 19:00:18,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:00:18,166 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-08 19:00:18,167 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 19:00:18,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:18,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:18,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:00:18,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash -654785950, now seen corresponding path program 1 times [2024-11-08 19:00:18,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75354485] [2024-11-08 19:00:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:18,664 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 19:00:18,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:18,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75354485] [2024-11-08 19:00:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75354485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:18,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:18,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:00:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197115826] [2024-11-08 19:00:18,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:18,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:00:18,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:00:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:00:18,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-08 19:00:18,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:18,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:18,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-08 19:00:18,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:18,993 INFO L124 PetriNetUnfolderBase]: 185/367 cut-off events. [2024-11-08 19:00:18,993 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-08 19:00:18,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 367 events. 185/367 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1567 event pairs, 32 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 595. Up to 243 conditions per place. [2024-11-08 19:00:19,000 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 23 selfloop transitions, 5 changer transitions 1/40 dead transitions. [2024-11-08 19:00:19,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 159 flow [2024-11-08 19:00:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:00:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:00:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-08 19:00:19,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-11-08 19:00:19,017 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 74 flow. Second operand 3 states and 69 transitions. [2024-11-08 19:00:19,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 159 flow [2024-11-08 19:00:19,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 19:00:19,025 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 91 flow [2024-11-08 19:00:19,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2024-11-08 19:00:19,035 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-11-08 19:00:19,035 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 91 flow [2024-11-08 19:00:19,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:19,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:19,036 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] [2024-11-08 19:00:19,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:00:19,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:00:19,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1227643757, now seen corresponding path program 1 times [2024-11-08 19:00:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669804880] [2024-11-08 19:00:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:19,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:19,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669804880] [2024-11-08 19:00:19,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669804880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:19,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:19,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:00:19,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607735263] [2024-11-08 19:00:19,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:19,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:00:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:00:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:19,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-08 19:00:19,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:19,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:19,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-08 19:00:19,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:19,728 INFO L124 PetriNetUnfolderBase]: 422/715 cut-off events. [2024-11-08 19:00:19,729 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-08 19:00:19,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 715 events. 422/715 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3006 event pairs, 57 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 358. Up to 313 conditions per place. [2024-11-08 19:00:19,736 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 50 selfloop transitions, 14 changer transitions 3/74 dead transitions. [2024-11-08 19:00:19,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 319 flow [2024-11-08 19:00:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:00:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:00:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-08 19:00:19,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-11-08 19:00:19,739 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 91 flow. Second operand 5 states and 108 transitions. [2024-11-08 19:00:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 319 flow [2024-11-08 19:00:19,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:00:19,742 INFO L231 Difference]: Finished difference. Result has 39 places, 43 transitions, 174 flow [2024-11-08 19:00:19,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=39, PETRI_TRANSITIONS=43} [2024-11-08 19:00:19,743 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-11-08 19:00:19,743 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 43 transitions, 174 flow [2024-11-08 19:00:19,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:19,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:19,744 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] [2024-11-08 19:00:19,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:00:19,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:00:19,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1679209529, now seen corresponding path program 1 times [2024-11-08 19:00:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:19,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970680104] [2024-11-08 19:00:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:19,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:19,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970680104] [2024-11-08 19:00:19,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970680104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:19,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:00:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88534636] [2024-11-08 19:00:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:19,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:00:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:19,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:00:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:19,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-08 19:00:19,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 43 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:19,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:19,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-08 19:00:19,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:20,276 INFO L124 PetriNetUnfolderBase]: 431/811 cut-off events. [2024-11-08 19:00:20,276 INFO L125 PetriNetUnfolderBase]: For 431/435 co-relation queries the response was YES. [2024-11-08 19:00:20,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 811 events. 431/811 cut-off events. For 431/435 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3882 event pairs, 66 based on Foata normal form. 48/851 useless extension candidates. Maximal degree in co-relation 627. Up to 292 conditions per place. [2024-11-08 19:00:20,285 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 59 selfloop transitions, 12 changer transitions 5/83 dead transitions. [2024-11-08 19:00:20,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 83 transitions, 459 flow [2024-11-08 19:00:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:00:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:00:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-08 19:00:20,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6411764705882353 [2024-11-08 19:00:20,287 INFO L175 Difference]: Start difference. First operand has 39 places, 43 transitions, 174 flow. Second operand 5 states and 109 transitions. [2024-11-08 19:00:20,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 83 transitions, 459 flow [2024-11-08 19:00:20,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 83 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:00:20,292 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 259 flow [2024-11-08 19:00:20,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-08 19:00:20,293 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2024-11-08 19:00:20,293 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 259 flow [2024-11-08 19:00:20,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:20,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:20,294 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] [2024-11-08 19:00:20,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:00:20,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:00:20,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1298296745, now seen corresponding path program 2 times [2024-11-08 19:00:20,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665573948] [2024-11-08 19:00:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665573948] [2024-11-08 19:00:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665573948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:20,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:00:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850623433] [2024-11-08 19:00:20,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:20,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:00:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:00:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:20,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-08 19:00:20,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:20,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:20,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-08 19:00:20,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:20,673 INFO L124 PetriNetUnfolderBase]: 353/696 cut-off events. [2024-11-08 19:00:20,673 INFO L125 PetriNetUnfolderBase]: For 1086/1090 co-relation queries the response was YES. [2024-11-08 19:00:20,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 696 events. 353/696 cut-off events. For 1086/1090 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3101 event pairs, 40 based on Foata normal form. 74/762 useless extension candidates. Maximal degree in co-relation 865. Up to 280 conditions per place. [2024-11-08 19:00:20,680 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 53 selfloop transitions, 13 changer transitions 4/77 dead transitions. [2024-11-08 19:00:20,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 509 flow [2024-11-08 19:00:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:00:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:00:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-11-08 19:00:20,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5941176470588235 [2024-11-08 19:00:20,683 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 259 flow. Second operand 5 states and 101 transitions. [2024-11-08 19:00:20,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 509 flow [2024-11-08 19:00:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 507 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 19:00:20,697 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 318 flow [2024-11-08 19:00:20,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-08 19:00:20,699 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2024-11-08 19:00:20,700 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 318 flow [2024-11-08 19:00:20,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:20,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:20,701 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] [2024-11-08 19:00:20,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:00:20,702 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:00:20,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash -206835073, now seen corresponding path program 2 times [2024-11-08 19:00:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:20,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920466825] [2024-11-08 19:00:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:20,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:20,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920466825] [2024-11-08 19:00:20,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920466825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:00:20,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:00:20,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:00:20,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849334110] [2024-11-08 19:00:20,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:00:20,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:00:20,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:00:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:00:20,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-08 19:00:20,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-08 19:00:20,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:21,205 INFO L124 PetriNetUnfolderBase]: 318/611 cut-off events. [2024-11-08 19:00:21,205 INFO L125 PetriNetUnfolderBase]: For 1609/1617 co-relation queries the response was YES. [2024-11-08 19:00:21,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 611 events. 318/611 cut-off events. For 1609/1617 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2540 event pairs, 65 based on Foata normal form. 13/619 useless extension candidates. Maximal degree in co-relation 1242. Up to 321 conditions per place. [2024-11-08 19:00:21,214 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 52 selfloop transitions, 11 changer transitions 7/77 dead transitions. [2024-11-08 19:00:21,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 576 flow [2024-11-08 19:00:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:00:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:00:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-08 19:00:21,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2024-11-08 19:00:21,217 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 318 flow. Second operand 5 states and 96 transitions. [2024-11-08 19:00:21,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 576 flow [2024-11-08 19:00:21,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 561 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-08 19:00:21,227 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 365 flow [2024-11-08 19:00:21,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-08 19:00:21,231 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2024-11-08 19:00:21,232 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 365 flow [2024-11-08 19:00:21,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:21,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:21,232 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 19:00:21,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:00:21,233 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:00:21,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -403094658, now seen corresponding path program 1 times [2024-11-08 19:00:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627088536] [2024-11-08 19:00:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:00:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627088536] [2024-11-08 19:00:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627088536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:21,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28224755] [2024-11-08 19:00:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:21,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:21,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:21,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:00:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:21,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 19:00:21,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:00:21,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:00:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28224755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:22,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:22,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-08 19:00:22,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547755590] [2024-11-08 19:00:22,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:22,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:00:22,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:00:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:00:22,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-08 19:00:22,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:00:22,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:22,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-08 19:00:22,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:22,241 INFO L124 PetriNetUnfolderBase]: 221/465 cut-off events. [2024-11-08 19:00:22,241 INFO L125 PetriNetUnfolderBase]: For 1249/1263 co-relation queries the response was YES. [2024-11-08 19:00:22,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 465 events. 221/465 cut-off events. For 1249/1263 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2049 event pairs, 44 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 1233. Up to 121 conditions per place. [2024-11-08 19:00:22,253 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2024-11-08 19:00:22,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 533 flow [2024-11-08 19:00:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:00:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:00:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-11-08 19:00:22,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-08 19:00:22,255 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 365 flow. Second operand 6 states and 114 transitions. [2024-11-08 19:00:22,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 533 flow [2024-11-08 19:00:22,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 518 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-08 19:00:22,261 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-11-08 19:00:22,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-11-08 19:00:22,262 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2024-11-08 19:00:22,262 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-11-08 19:00:22,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:00:22,265 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-08 19:00:22,266 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-08 19:00:22,266 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-08 19:00:22,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:00:22,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:22,471 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-08 19:00:22,477 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 19:00:22,477 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:00:22,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:00:22 BasicIcfg [2024-11-08 19:00:22,484 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:00:22,485 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:00:22,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:00:22,485 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:00:22,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:00:17" (3/4) ... [2024-11-08 19:00:22,489 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 19:00:22,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-08 19:00:22,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-08 19:00:22,501 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2024-11-08 19:00:22,501 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-08 19:00:22,502 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-08 19:00:22,502 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 19:00:22,618 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 19:00:22,619 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 19:00:22,619 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:00:22,620 INFO L158 Benchmark]: Toolchain (without parser) took 5897.37ms. Allocated memory was 134.2MB in the beginning and 211.8MB in the end (delta: 77.6MB). Free memory was 76.2MB in the beginning and 169.5MB in the end (delta: -93.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:00:22,624 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:00:22,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.30ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 75.9MB in the beginning and 140.8MB in the end (delta: -64.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-11-08 19:00:22,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.13ms. Allocated memory is still 176.2MB. Free memory was 140.8MB in the beginning and 139.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:00:22,625 INFO L158 Benchmark]: Boogie Preprocessor took 58.98ms. Allocated memory is still 176.2MB. Free memory was 139.3MB in the beginning and 137.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:00:22,625 INFO L158 Benchmark]: RCFGBuilder took 678.48ms. Allocated memory is still 176.2MB. Free memory was 137.6MB in the beginning and 116.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 19:00:22,626 INFO L158 Benchmark]: TraceAbstraction took 4596.53ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 115.7MB in the beginning and 174.8MB in the end (delta: -59.1MB). Peak memory consumption was 98.8MB. Max. memory is 16.1GB. [2024-11-08 19:00:22,626 INFO L158 Benchmark]: Witness Printer took 133.97ms. Allocated memory is still 211.8MB. Free memory was 174.8MB in the beginning and 169.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 19:00:22,633 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.30ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 75.9MB in the beginning and 140.8MB in the end (delta: -64.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.13ms. Allocated memory is still 176.2MB. Free memory was 140.8MB in the beginning and 139.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.98ms. Allocated memory is still 176.2MB. Free memory was 139.3MB in the beginning and 137.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 678.48ms. Allocated memory is still 176.2MB. Free memory was 137.6MB in the beginning and 116.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4596.53ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 115.7MB in the beginning and 174.8MB in the end (delta: -59.1MB). Peak memory consumption was 98.8MB. Max. memory is 16.1GB. * Witness Printer took 133.97ms. Allocated memory is still 211.8MB. Free memory was 174.8MB in the beginning and 169.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 519 IncrementalHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 1 mSDtfsCounter, 519 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=365occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 951 SizeOfPredicates, 5 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 7/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 19:00:22,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc234598-9eaf-4aee-a5eb-82fd3a5c93fc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE