./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:34:57,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:34:57,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:34:57,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:34:57,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:34:57,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:34:57,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:34:57,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:34:57,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:34:57,094 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:34:57,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:34:57,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:34:57,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:34:57,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:34:57,097 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:34:57,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:34:57,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:34:57,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:34:57,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:34:57,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:34:57,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:34:57,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:34:57,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:34:57,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:34:57,102 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:34:57,102 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:34:57,103 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:34:57,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:34:57,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:34:57,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:34:57,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:34:57,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:34:57,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:34:57,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:34:57,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:34:57,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:34:57,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:34:57,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:34:57,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:34:57,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:34:57,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:34:57,107 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:34:57,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:34:57,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:34:57,108 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_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2023-11-29 05:34:57,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:34:57,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:34:57,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:34:57,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:34:57,343 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:34:57,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2023-11-29 05:35:00,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:35:00,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:35:00,319 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2023-11-29 05:35:00,334 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/data/334c089be/740bc0b4ad3c40f6974a6bd9a3aa7190/FLAGb22f3499c [2023-11-29 05:35:00,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/data/334c089be/740bc0b4ad3c40f6974a6bd9a3aa7190 [2023-11-29 05:35:00,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:35:00,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:35:00,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:35:00,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:35:00,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:35:00,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148bd057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00, skipping insertion in model container [2023-11-29 05:35:00,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:35:00,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:35:00,695 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:35:00,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:35:00,766 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:35:00,771 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:35:00,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00 WrapperNode [2023-11-29 05:35:00,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:35:00,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:35:00,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:35:00,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:35:00,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,817 INFO L138 Inliner]: procedures = 174, calls = 45, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 164 [2023-11-29 05:35:00,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:35:00,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:35:00,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:35:00,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:35:00,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,846 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2023-11-29 05:35:00,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:35:00,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:35:00,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:35:00,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:35:00,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (1/1) ... [2023-11-29 05:35:00,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:35:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:00,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:35:00,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:35:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:35:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:35:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:35:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:35:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:35:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:35:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:35:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:35:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:35:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:35:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 05:35:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:35:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:35:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 05:35:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 05:35:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:35:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:35:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:35:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:35:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:35:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:35:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 05:35:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:35:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:35:00,935 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:35:01,078 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:35:01,080 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:35:01,306 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:35:01,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:35:01,472 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 05:35:01,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:35:01 BoogieIcfgContainer [2023-11-29 05:35:01,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:35:01,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:35:01,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:35:01,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:35:01,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:35:00" (1/3) ... [2023-11-29 05:35:01,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31da0659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:35:01, skipping insertion in model container [2023-11-29 05:35:01,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:35:00" (2/3) ... [2023-11-29 05:35:01,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31da0659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:35:01, skipping insertion in model container [2023-11-29 05:35:01,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:35:01" (3/3) ... [2023-11-29 05:35:01,480 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-11-29 05:35:01,487 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:35:01,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:35:01,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 05:35:01,494 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:35:01,527 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 05:35:01,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 69 transitions, 145 flow [2023-11-29 05:35:01,593 INFO L124 PetriNetUnfolderBase]: 19/112 cut-off events. [2023-11-29 05:35:01,594 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:35:01,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 19/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 384 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2023-11-29 05:35:01,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 69 transitions, 145 flow [2023-11-29 05:35:01,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 68 transitions, 143 flow [2023-11-29 05:35:01,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:35:01,617 INFO L357 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, mHoare=true, 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;@6f46b253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:35:01,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 05:35:01,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:35:01,624 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:35:01,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:35:01,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:01,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:35:01,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:01,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 432615512, now seen corresponding path program 1 times [2023-11-29 05:35:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591740661] [2023-11-29 05:35:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:01,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:01,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591740661] [2023-11-29 05:35:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591740661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:01,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:01,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:35:01,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58997193] [2023-11-29 05:35:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:01,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:01,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:01,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 69 [2023-11-29 05:35:01,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-11-29 05:35:01,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:01,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 69 [2023-11-29 05:35:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:02,128 INFO L124 PetriNetUnfolderBase]: 134/422 cut-off events. [2023-11-29 05:35:02,128 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:35:02,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 422 events. 134/422 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2092 event pairs, 0 based on Foata normal form. 56/428 useless extension candidates. Maximal degree in co-relation 687. Up to 264 conditions per place. [2023-11-29 05:35:02,135 INFO L140 encePairwiseOnDemand]: 55/69 looper letters, 41 selfloop transitions, 3 changer transitions 1/71 dead transitions. [2023-11-29 05:35:02,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 239 flow [2023-11-29 05:35:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2023-11-29 05:35:02,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2023-11-29 05:35:02,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 164 transitions. [2023-11-29 05:35:02,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 164 transitions. [2023-11-29 05:35:02,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:02,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 164 transitions. [2023-11-29 05:35:02,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2023-11-29 05:35:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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) [2023-11-29 05:35:02,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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) [2023-11-29 05:35:02,160 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 143 flow. Second operand 4 states and 164 transitions. [2023-11-29 05:35:02,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 239 flow [2023-11-29 05:35:02,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 239 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:35:02,167 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 131 flow [2023-11-29 05:35:02,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-29 05:35:02,173 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-11-29 05:35:02,173 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 131 flow [2023-11-29 05:35:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-11-29 05:35:02,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:02,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:02,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:35:02,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1147667927, now seen corresponding path program 1 times [2023-11-29 05:35:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140347288] [2023-11-29 05:35:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:35:02,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:35:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:35:02,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:35:02,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:35:02,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-29 05:35:02,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-29 05:35:02,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-29 05:35:02,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-29 05:35:02,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-29 05:35:02,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-29 05:35:02,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-29 05:35:02,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-29 05:35:02,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-29 05:35:02,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-29 05:35:02,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-29 05:35:02,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:35:02,246 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 05:35:02,249 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:35:02,249 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 05:35:02,270 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 05:35:02,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 83 transitions, 182 flow [2023-11-29 05:35:02,295 INFO L124 PetriNetUnfolderBase]: 31/188 cut-off events. [2023-11-29 05:35:02,296 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-29 05:35:02,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 188 events. 31/188 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 803 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2023-11-29 05:35:02,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 83 transitions, 182 flow [2023-11-29 05:35:02,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 83 transitions, 182 flow [2023-11-29 05:35:02,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:35:02,303 INFO L357 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, mHoare=true, 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;@6f46b253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:35:02,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 05:35:02,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:35:02,306 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:35:02,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:35:02,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:02,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:35:02,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:02,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 511834359, now seen corresponding path program 1 times [2023-11-29 05:35:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018589142] [2023-11-29 05:35:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018589142] [2023-11-29 05:35:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018589142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:35:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209048001] [2023-11-29 05:35:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:02,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-29 05:35:02,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-29 05:35:02,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:02,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-29 05:35:02,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:03,105 INFO L124 PetriNetUnfolderBase]: 2172/4573 cut-off events. [2023-11-29 05:35:03,105 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-29 05:35:03,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8118 conditions, 4573 events. 2172/4573 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 33909 event pairs, 954 based on Foata normal form. 567/4675 useless extension candidates. Maximal degree in co-relation 1075. Up to 3481 conditions per place. [2023-11-29 05:35:03,140 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 54 selfloop transitions, 3 changer transitions 1/88 dead transitions. [2023-11-29 05:35:03,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 308 flow [2023-11-29 05:35:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2023-11-29 05:35:03,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873493975903614 [2023-11-29 05:35:03,143 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 195 transitions. [2023-11-29 05:35:03,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 195 transitions. [2023-11-29 05:35:03,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:03,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 195 transitions. [2023-11-29 05:35:03,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2023-11-29 05:35:03,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-29 05:35:03,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-29 05:35:03,148 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 182 flow. Second operand 4 states and 195 transitions. [2023-11-29 05:35:03,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 308 flow [2023-11-29 05:35:03,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:35:03,152 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 184 flow [2023-11-29 05:35:03,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-29 05:35:03,153 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-11-29 05:35:03,153 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 184 flow [2023-11-29 05:35:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-29 05:35:03,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:03,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:03,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:35:03,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:03,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1055794123, now seen corresponding path program 1 times [2023-11-29 05:35:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635915484] [2023-11-29 05:35:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:03,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635915484] [2023-11-29 05:35:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635915484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141405181] [2023-11-29 05:35:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:03,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:03,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:03,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:03,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:35:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:03,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:35:03,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:03,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:35:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141405181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:03,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:35:03,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:35:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292657943] [2023-11-29 05:35:03,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:03,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:35:03,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:35:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:35:03,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-29 05:35:03,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 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) [2023-11-29 05:35:03,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:03,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-29 05:35:03,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:04,122 INFO L124 PetriNetUnfolderBase]: 1992/4322 cut-off events. [2023-11-29 05:35:04,122 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2023-11-29 05:35:04,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7809 conditions, 4322 events. 1992/4322 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 32787 event pairs, 121 based on Foata normal form. 49/4011 useless extension candidates. Maximal degree in co-relation 3191. Up to 2539 conditions per place. [2023-11-29 05:35:04,155 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 74 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2023-11-29 05:35:04,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 110 transitions, 414 flow [2023-11-29 05:35:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:35:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:35:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2023-11-29 05:35:04,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240963855421686 [2023-11-29 05:35:04,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 261 transitions. [2023-11-29 05:35:04,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 261 transitions. [2023-11-29 05:35:04,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:04,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 261 transitions. [2023-11-29 05:35:04,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 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) [2023-11-29 05:35:04,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2023-11-29 05:35:04,163 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2023-11-29 05:35:04,163 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 184 flow. Second operand 6 states and 261 transitions. [2023-11-29 05:35:04,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 110 transitions, 414 flow [2023-11-29 05:35:04,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:35:04,167 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 190 flow [2023-11-29 05:35:04,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2023-11-29 05:35:04,168 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-11-29 05:35:04,169 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 190 flow [2023-11-29 05:35:04,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 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) [2023-11-29 05:35:04,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:04,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 05:35:04,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:35:04,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:04,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:04,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:04,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1630121112, now seen corresponding path program 1 times [2023-11-29 05:35:04,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522340756] [2023-11-29 05:35:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:04,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:35:04,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522340756] [2023-11-29 05:35:04,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522340756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:04,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:04,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:35:04,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687350042] [2023-11-29 05:35:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:04,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:04,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:04,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-29 05:35:04,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2023-11-29 05:35:04,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:04,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-29 05:35:04,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:04,940 INFO L124 PetriNetUnfolderBase]: 1908/4162 cut-off events. [2023-11-29 05:35:04,940 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2023-11-29 05:35:04,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7629 conditions, 4162 events. 1908/4162 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 31349 event pairs, 78 based on Foata normal form. 49/3913 useless extension candidates. Maximal degree in co-relation 3694. Up to 2685 conditions per place. [2023-11-29 05:35:04,962 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 61 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2023-11-29 05:35:04,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 370 flow [2023-11-29 05:35:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2023-11-29 05:35:04,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602409638554217 [2023-11-29 05:35:04,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 186 transitions. [2023-11-29 05:35:04,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 186 transitions. [2023-11-29 05:35:04,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:04,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 186 transitions. [2023-11-29 05:35:04,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2023-11-29 05:35:04,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-29 05:35:04,967 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-29 05:35:04,967 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 190 flow. Second operand 4 states and 186 transitions. [2023-11-29 05:35:04,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 370 flow [2023-11-29 05:35:04,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 354 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 05:35:04,972 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 190 flow [2023-11-29 05:35:04,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-11-29 05:35:04,973 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-11-29 05:35:04,973 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 190 flow [2023-11-29 05:35:04,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2023-11-29 05:35:04,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:04,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:35:04,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:04,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1628354121, now seen corresponding path program 1 times [2023-11-29 05:35:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:04,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641049337] [2023-11-29 05:35:04,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:05,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:05,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641049337] [2023-11-29 05:35:05,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641049337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:05,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084428236] [2023-11-29 05:35:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:05,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:05,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:05,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:05,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:35:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:05,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:35:05,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:05,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:35:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084428236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:35:05,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:35:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 05:35:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886462950] [2023-11-29 05:35:05,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:35:05,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:35:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:35:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:35:05,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2023-11-29 05:35:05,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 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) [2023-11-29 05:35:05,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:05,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2023-11-29 05:35:05,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:05,397 INFO L124 PetriNetUnfolderBase]: 312/675 cut-off events. [2023-11-29 05:35:05,397 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2023-11-29 05:35:05,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 675 events. 312/675 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3747 event pairs, 0 based on Foata normal form. 56/731 useless extension candidates. Maximal degree in co-relation 201. Up to 266 conditions per place. [2023-11-29 05:35:05,403 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-11-29 05:35:05,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 292 flow [2023-11-29 05:35:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:35:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:35:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 270 transitions. [2023-11-29 05:35:05,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46471600688468157 [2023-11-29 05:35:05,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 270 transitions. [2023-11-29 05:35:05,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 270 transitions. [2023-11-29 05:35:05,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:05,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 270 transitions. [2023-11-29 05:35:05,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.57142857142857) internal successors, (270), 7 states have internal predecessors, (270), 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) [2023-11-29 05:35:05,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2023-11-29 05:35:05,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2023-11-29 05:35:05,409 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 190 flow. Second operand 7 states and 270 transitions. [2023-11-29 05:35:05,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 292 flow [2023-11-29 05:35:05,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:35:05,412 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 101 flow [2023-11-29 05:35:05,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-11-29 05:35:05,413 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -29 predicate places. [2023-11-29 05:35:05,413 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 101 flow [2023-11-29 05:35:05,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 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) [2023-11-29 05:35:05,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:05,414 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 05:35:05,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:35:05,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:35:05,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:05,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1116657877, now seen corresponding path program 1 times [2023-11-29 05:35:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694633304] [2023-11-29 05:35:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:35:05,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:35:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:35:05,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:35:05,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:35:05,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-29 05:35:05,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-29 05:35:05,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-29 05:35:05,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-29 05:35:05,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-29 05:35:05,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-29 05:35:05,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-29 05:35:05,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-29 05:35:05,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-29 05:35:05,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-29 05:35:05,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-29 05:35:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:35:05,659 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 05:35:05,660 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:35:05,660 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 05:35:05,685 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:35:05,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 97 transitions, 221 flow [2023-11-29 05:35:05,711 INFO L124 PetriNetUnfolderBase]: 46/283 cut-off events. [2023-11-29 05:35:05,712 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-29 05:35:05,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 283 events. 46/283 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1307 event pairs, 1 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2023-11-29 05:35:05,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 97 transitions, 221 flow [2023-11-29 05:35:05,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 97 transitions, 221 flow [2023-11-29 05:35:05,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:35:05,718 INFO L357 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, mHoare=true, 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;@6f46b253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:35:05,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 05:35:05,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:35:05,720 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:35:05,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:35:05,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:05,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:35:05,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:05,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 604413476, now seen corresponding path program 1 times [2023-11-29 05:35:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831507866] [2023-11-29 05:35:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:05,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:05,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:05,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831507866] [2023-11-29 05:35:05,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831507866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:05,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:05,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:35:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917698742] [2023-11-29 05:35:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:05,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:05,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:05,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 97 [2023-11-29 05:35:05,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 97 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:05,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:05,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 97 [2023-11-29 05:35:05,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:09,387 INFO L124 PetriNetUnfolderBase]: 23959/40566 cut-off events. [2023-11-29 05:35:09,387 INFO L125 PetriNetUnfolderBase]: For 711/711 co-relation queries the response was YES. [2023-11-29 05:35:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74783 conditions, 40566 events. 23959/40566 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 342681 event pairs, 17649 based on Foata normal form. 5406/42585 useless extension candidates. Maximal degree in co-relation 12893. Up to 33780 conditions per place. [2023-11-29 05:35:09,573 INFO L140 encePairwiseOnDemand]: 79/97 looper letters, 62 selfloop transitions, 3 changer transitions 1/100 dead transitions. [2023-11-29 05:35:09,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 359 flow [2023-11-29 05:35:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2023-11-29 05:35:09,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695876288659794 [2023-11-29 05:35:09,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 221 transitions. [2023-11-29 05:35:09,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 221 transitions. [2023-11-29 05:35:09,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:09,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 221 transitions. [2023-11-29 05:35:09,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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) [2023-11-29 05:35:09,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-29 05:35:09,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-29 05:35:09,579 INFO L175 Difference]: Start difference. First operand has 87 places, 97 transitions, 221 flow. Second operand 4 states and 221 transitions. [2023-11-29 05:35:09,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 359 flow [2023-11-29 05:35:09,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:35:09,583 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 219 flow [2023-11-29 05:35:09,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-11-29 05:35:09,584 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-11-29 05:35:09,584 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 219 flow [2023-11-29 05:35:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:09,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:09,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:35:09,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:09,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1878724693, now seen corresponding path program 1 times [2023-11-29 05:35:09,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:09,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533787379] [2023-11-29 05:35:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:09,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:09,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533787379] [2023-11-29 05:35:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533787379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548726571] [2023-11-29 05:35:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:09,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:09,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:35:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:09,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:35:09,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:09,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:35:09,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548726571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:09,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:35:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:35:09,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158201636] [2023-11-29 05:35:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:09,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:35:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:09,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:35:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:35:09,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 97 [2023-11-29 05:35:09,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 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) [2023-11-29 05:35:09,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:09,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 97 [2023-11-29 05:35:09,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:12,768 INFO L124 PetriNetUnfolderBase]: 21841/38994 cut-off events. [2023-11-29 05:35:12,768 INFO L125 PetriNetUnfolderBase]: For 2010/2010 co-relation queries the response was YES. [2023-11-29 05:35:12,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71796 conditions, 38994 events. 21841/38994 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 352896 event pairs, 1456 based on Foata normal form. 392/36669 useless extension candidates. Maximal degree in co-relation 10371. Up to 24278 conditions per place. [2023-11-29 05:35:12,933 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 94 selfloop transitions, 6 changer transitions 0/134 dead transitions. [2023-11-29 05:35:12,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 134 transitions, 513 flow [2023-11-29 05:35:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:35:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:35:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 305 transitions. [2023-11-29 05:35:12,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240549828178694 [2023-11-29 05:35:12,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 305 transitions. [2023-11-29 05:35:12,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 305 transitions. [2023-11-29 05:35:12,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:12,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 305 transitions. [2023-11-29 05:35:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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) [2023-11-29 05:35:12,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2023-11-29 05:35:12,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2023-11-29 05:35:12,939 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 219 flow. Second operand 6 states and 305 transitions. [2023-11-29 05:35:12,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 134 transitions, 513 flow [2023-11-29 05:35:12,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 134 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:35:12,943 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 225 flow [2023-11-29 05:35:12,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-29 05:35:12,944 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-11-29 05:35:12,944 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 225 flow [2023-11-29 05:35:12,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 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) [2023-11-29 05:35:12,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:12,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 05:35:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 05:35:13,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:13,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:13,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1889076007, now seen corresponding path program 1 times [2023-11-29 05:35:13,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427099414] [2023-11-29 05:35:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:35:13,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:13,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427099414] [2023-11-29 05:35:13,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427099414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:13,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:13,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:35:13,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468026133] [2023-11-29 05:35:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:13,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:13,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:13,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 97 [2023-11-29 05:35:13,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2023-11-29 05:35:13,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:13,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 97 [2023-11-29 05:35:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:16,731 INFO L124 PetriNetUnfolderBase]: 20875/37543 cut-off events. [2023-11-29 05:35:16,731 INFO L125 PetriNetUnfolderBase]: For 3390/3390 co-relation queries the response was YES. [2023-11-29 05:35:16,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69786 conditions, 37543 events. 20875/37543 cut-off events. For 3390/3390 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 341413 event pairs, 1609 based on Foata normal form. 392/35732 useless extension candidates. Maximal degree in co-relation 7710. Up to 25649 conditions per place. [2023-11-29 05:35:16,862 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 81 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-11-29 05:35:16,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 469 flow [2023-11-29 05:35:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2023-11-29 05:35:16,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5721649484536082 [2023-11-29 05:35:16,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 222 transitions. [2023-11-29 05:35:16,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 222 transitions. [2023-11-29 05:35:16,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:16,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 222 transitions. [2023-11-29 05:35:16,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-11-29 05:35:16,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-29 05:35:16,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-29 05:35:16,866 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 225 flow. Second operand 4 states and 222 transitions. [2023-11-29 05:35:16,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 469 flow [2023-11-29 05:35:16,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 453 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 05:35:16,875 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 225 flow [2023-11-29 05:35:16,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2023-11-29 05:35:16,876 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-11-29 05:35:16,876 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 225 flow [2023-11-29 05:35:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2023-11-29 05:35:16,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:16,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:16,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:35:16,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:16,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1891200490, now seen corresponding path program 1 times [2023-11-29 05:35:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:16,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049389657] [2023-11-29 05:35:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:16,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049389657] [2023-11-29 05:35:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049389657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701950601] [2023-11-29 05:35:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:16,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:16,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:16,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:35:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:17,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:35:17,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:17,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:35:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701950601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:35:17,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:35:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 05:35:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381785902] [2023-11-29 05:35:17,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:35:17,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:35:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:35:17,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:35:17,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 97 [2023-11-29 05:35:17,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 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) [2023-11-29 05:35:17,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:17,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 97 [2023-11-29 05:35:17,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:19,436 INFO L124 PetriNetUnfolderBase]: 19447/34195 cut-off events. [2023-11-29 05:35:19,437 INFO L125 PetriNetUnfolderBase]: For 4272/4272 co-relation queries the response was YES. [2023-11-29 05:35:19,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64219 conditions, 34195 events. 19447/34195 cut-off events. For 4272/4272 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 297240 event pairs, 935 based on Foata normal form. 56/32261 useless extension candidates. Maximal degree in co-relation 7108. Up to 23291 conditions per place. [2023-11-29 05:35:19,560 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 102 selfloop transitions, 7 changer transitions 0/143 dead transitions. [2023-11-29 05:35:19,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 574 flow [2023-11-29 05:35:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:35:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:35:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2023-11-29 05:35:19,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139911634756995 [2023-11-29 05:35:19,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 349 transitions. [2023-11-29 05:35:19,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 349 transitions. [2023-11-29 05:35:19,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:19,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 349 transitions. [2023-11-29 05:35:19,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.857142857142854) internal successors, (349), 7 states have internal predecessors, (349), 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) [2023-11-29 05:35:19,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2023-11-29 05:35:19,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2023-11-29 05:35:19,567 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 225 flow. Second operand 7 states and 349 transitions. [2023-11-29 05:35:19,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 574 flow [2023-11-29 05:35:19,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:35:19,572 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 261 flow [2023-11-29 05:35:19,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-11-29 05:35:19,573 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2023-11-29 05:35:19,573 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 261 flow [2023-11-29 05:35:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 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) [2023-11-29 05:35:19,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:19,574 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 05:35:19,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 05:35:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:19,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:19,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1170997544, now seen corresponding path program 1 times [2023-11-29 05:35:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185054729] [2023-11-29 05:35:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:35:19,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:35:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:35:19,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:35:19,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:35:19,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-29 05:35:19,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-29 05:35:19,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-29 05:35:19,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-29 05:35:19,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-29 05:35:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-29 05:35:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-29 05:35:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-29 05:35:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-29 05:35:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-29 05:35:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-29 05:35:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:35:19,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 05:35:19,837 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:35:19,837 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 05:35:19,865 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 05:35:19,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 111 transitions, 262 flow [2023-11-29 05:35:19,902 INFO L124 PetriNetUnfolderBase]: 69/418 cut-off events. [2023-11-29 05:35:19,902 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2023-11-29 05:35:19,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 418 events. 69/418 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2057 event pairs, 6 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 311. Up to 32 conditions per place. [2023-11-29 05:35:19,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 111 transitions, 262 flow [2023-11-29 05:35:19,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 111 transitions, 262 flow [2023-11-29 05:35:19,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:35:19,908 INFO L357 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, mHoare=true, 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;@6f46b253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:35:19,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 05:35:19,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:35:19,911 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 05:35:19,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:35:19,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:19,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:35:19,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:19,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 710352863, now seen corresponding path program 1 times [2023-11-29 05:35:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581074913] [2023-11-29 05:35:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581074913] [2023-11-29 05:35:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581074913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:35:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:35:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584389217] [2023-11-29 05:35:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:19,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:35:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:35:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:35:19,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 111 [2023-11-29 05:35:19,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-29 05:35:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:19,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 111 [2023-11-29 05:35:19,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:48,388 INFO L124 PetriNetUnfolderBase]: 232996/349600 cut-off events. [2023-11-29 05:35:48,388 INFO L125 PetriNetUnfolderBase]: For 9411/9411 co-relation queries the response was YES. [2023-11-29 05:35:48,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658250 conditions, 349600 events. 232996/349600 cut-off events. For 9411/9411 co-relation queries the response was YES. Maximal size of possible extension queue 8124. Compared 3179437 event pairs, 187324 based on Foata normal form. 48384/374897 useless extension candidates. Maximal degree in co-relation 74724. Up to 304641 conditions per place. [2023-11-29 05:35:49,957 INFO L140 encePairwiseOnDemand]: 91/111 looper letters, 70 selfloop transitions, 3 changer transitions 1/112 dead transitions. [2023-11-29 05:35:49,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 412 flow [2023-11-29 05:35:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:35:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:35:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-11-29 05:35:49,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563063063063063 [2023-11-29 05:35:49,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-11-29 05:35:49,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-11-29 05:35:49,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:49,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-11-29 05:35:49,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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) [2023-11-29 05:35:49,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-11-29 05:35:49,961 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-11-29 05:35:49,961 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 262 flow. Second operand 4 states and 247 transitions. [2023-11-29 05:35:49,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 412 flow [2023-11-29 05:35:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 112 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:35:49,965 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 256 flow [2023-11-29 05:35:49,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2023-11-29 05:35:49,966 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2023-11-29 05:35:49,966 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 256 flow [2023-11-29 05:35:49,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-29 05:35:49,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:49,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:35:49,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:35:49,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1111354677, now seen corresponding path program 1 times [2023-11-29 05:35:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984394514] [2023-11-29 05:35:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:50,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984394514] [2023-11-29 05:35:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984394514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90517824] [2023-11-29 05:35:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:50,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:50,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:50,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:50,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:35:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:50,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:35:50,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:50,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:35:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90517824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:35:50,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:35:50,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:35:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735383732] [2023-11-29 05:35:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:35:50,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:35:50,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:35:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:35:50,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 111 [2023-11-29 05:35:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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) [2023-11-29 05:35:50,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:50,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 111 [2023-11-29 05:35:50,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:36:17,008 INFO L124 PetriNetUnfolderBase]: 211510/335829 cut-off events. [2023-11-29 05:36:17,008 INFO L125 PetriNetUnfolderBase]: For 15586/15586 co-relation queries the response was YES. [2023-11-29 05:36:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627315 conditions, 335829 events. 211510/335829 cut-off events. For 15586/15586 co-relation queries the response was YES. Maximal size of possible extension queue 8175. Compared 3373107 event pairs, 20582 based on Foata normal form. 2793/318554 useless extension candidates. Maximal degree in co-relation 267655. Up to 218679 conditions per place. [2023-11-29 05:36:18,982 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 114 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-11-29 05:36:18,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 158 transitions, 614 flow [2023-11-29 05:36:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:36:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:36:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 349 transitions. [2023-11-29 05:36:18,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524024024024024 [2023-11-29 05:36:18,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 349 transitions. [2023-11-29 05:36:18,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 349 transitions. [2023-11-29 05:36:18,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:36:18,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 349 transitions. [2023-11-29 05:36:18,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 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) [2023-11-29 05:36:18,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 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) [2023-11-29 05:36:18,989 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 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) [2023-11-29 05:36:18,989 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 256 flow. Second operand 6 states and 349 transitions. [2023-11-29 05:36:18,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 158 transitions, 614 flow [2023-11-29 05:36:18,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 158 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:36:19,000 INFO L231 Difference]: Finished difference. Result has 107 places, 97 transitions, 262 flow [2023-11-29 05:36:19,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=107, PETRI_TRANSITIONS=97} [2023-11-29 05:36:19,001 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2023-11-29 05:36:19,001 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 262 flow [2023-11-29 05:36:19,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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) [2023-11-29 05:36:19,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:36:19,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 05:36:19,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:36:19,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:36:19,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:36:19,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:19,202 INFO L85 PathProgramCache]: Analyzing trace with hash 92257384, now seen corresponding path program 1 times [2023-11-29 05:36:19,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:19,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847244647] [2023-11-29 05:36:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:19,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:36:19,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:19,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847244647] [2023-11-29 05:36:19,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847244647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:36:19,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:36:19,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:36:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621430083] [2023-11-29 05:36:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:36:19,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:36:19,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:36:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:36:19,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 111 [2023-11-29 05:36:19,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 97 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 05:36:19,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:36:19,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 111 [2023-11-29 05:36:19,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:36:44,068 INFO L124 PetriNetUnfolderBase]: 202312/322739 cut-off events. [2023-11-29 05:36:44,068 INFO L125 PetriNetUnfolderBase]: For 27120/27120 co-relation queries the response was YES. [2023-11-29 05:36:44,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607835 conditions, 322739 events. 202312/322739 cut-off events. For 27120/27120 co-relation queries the response was YES. Maximal size of possible extension queue 7861. Compared 3253408 event pairs, 16176 based on Foata normal form. 2793/309496 useless extension candidates. Maximal degree in co-relation 69876. Up to 230683 conditions per place. [2023-11-29 05:36:45,730 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 101 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2023-11-29 05:36:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 570 flow [2023-11-29 05:36:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:36:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:36:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2023-11-29 05:36:45,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2023-11-29 05:36:45,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 258 transitions. [2023-11-29 05:36:45,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 258 transitions. [2023-11-29 05:36:45,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:36:45,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 258 transitions. [2023-11-29 05:36:45,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2023-11-29 05:36:45,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-11-29 05:36:45,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-11-29 05:36:45,733 INFO L175 Difference]: Start difference. First operand has 107 places, 97 transitions, 262 flow. Second operand 4 states and 258 transitions. [2023-11-29 05:36:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 570 flow [2023-11-29 05:36:45,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 145 transitions, 554 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 05:36:45,813 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 262 flow [2023-11-29 05:36:45,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2023-11-29 05:36:45,813 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2023-11-29 05:36:45,813 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 262 flow [2023-11-29 05:36:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 05:36:45,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:36:45,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:36:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:36:45,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:36:45,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash 89775409, now seen corresponding path program 1 times [2023-11-29 05:36:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103112601] [2023-11-29 05:36:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:45,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103112601] [2023-11-29 05:36:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103112601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:36:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702139634] [2023-11-29 05:36:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:45,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:45,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:45,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:36:45,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:36:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:36:45,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:36:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:45,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:36:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:46,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702139634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:36:46,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:36:46,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 05:36:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253567324] [2023-11-29 05:36:46,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:36:46,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:36:46,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:36:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:36:46,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 111 [2023-11-29 05:36:46,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 262 flow. Second operand has 10 states, 10 states have (on average 39.9) internal successors, (399), 10 states have internal predecessors, (399), 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) [2023-11-29 05:36:46,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:36:46,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 111 [2023-11-29 05:36:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:37:09,657 INFO L124 PetriNetUnfolderBase]: 200884/318560 cut-off events. [2023-11-29 05:37:09,657 INFO L125 PetriNetUnfolderBase]: For 32482/32482 co-relation queries the response was YES. [2023-11-29 05:37:10,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601437 conditions, 318560 events. 200884/318560 cut-off events. For 32482/32482 co-relation queries the response was YES. Maximal size of possible extension queue 7798. Compared 3149665 event pairs, 11062 based on Foata normal form. 56/302613 useless extension candidates. Maximal degree in co-relation 69154. Up to 228325 conditions per place. [2023-11-29 05:37:11,389 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 116 selfloop transitions, 7 changer transitions 0/161 dead transitions. [2023-11-29 05:37:11,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 161 transitions, 651 flow [2023-11-29 05:37:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:37:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:37:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 391 transitions. [2023-11-29 05:37:11,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032175032175032 [2023-11-29 05:37:11,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 391 transitions. [2023-11-29 05:37:11,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 391 transitions. [2023-11-29 05:37:11,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:37:11,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 391 transitions. [2023-11-29 05:37:11,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 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) [2023-11-29 05:37:11,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 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) [2023-11-29 05:37:11,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 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) [2023-11-29 05:37:11,395 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 262 flow. Second operand 7 states and 391 transitions. [2023-11-29 05:37:11,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 161 transitions, 651 flow [2023-11-29 05:37:11,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 161 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:37:11,405 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 298 flow [2023-11-29 05:37:11,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2023-11-29 05:37:11,406 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2023-11-29 05:37:11,406 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 298 flow [2023-11-29 05:37:11,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.9) internal successors, (399), 10 states have internal predecessors, (399), 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) [2023-11-29 05:37:11,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:37:11,406 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:11,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:37:11,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b1bfe5-fa1d-425f-ae9e-b8820042ef7d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:37:11,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:37:11,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1018961422, now seen corresponding path program 1 times [2023-11-29 05:37:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:11,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052695100] [2023-11-29 05:37:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:37:11,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:11,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052695100] [2023-11-29 05:37:11,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052695100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:11,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:11,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:37:11,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906222967] [2023-11-29 05:37:11,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:11,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:37:11,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:11,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:37:11,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:37:11,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 111 [2023-11-29 05:37:11,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-29 05:37:11,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:37:11,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 111 [2023-11-29 05:37:11,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:37:57,492 INFO L124 PetriNetUnfolderBase]: 367680/567283 cut-off events. [2023-11-29 05:37:57,492 INFO L125 PetriNetUnfolderBase]: For 71376/71376 co-relation queries the response was YES. [2023-11-29 05:37:58,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080177 conditions, 567283 events. 367680/567283 cut-off events. For 71376/71376 co-relation queries the response was YES. Maximal size of possible extension queue 13176. Compared 5671007 event pairs, 222226 based on Foata normal form. 2744/542479 useless extension candidates. Maximal degree in co-relation 125449. Up to 297659 conditions per place. [2023-11-29 05:38:00,545 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 126 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2023-11-29 05:38:00,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 164 transitions, 684 flow [2023-11-29 05:38:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:38:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:38:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2023-11-29 05:38:00,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171171171171171 [2023-11-29 05:38:00,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 274 transitions. [2023-11-29 05:38:00,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 274 transitions. [2023-11-29 05:38:00,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:38:00,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 274 transitions. [2023-11-29 05:38:00,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2023-11-29 05:38:00,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-11-29 05:38:00,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-11-29 05:38:00,550 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 298 flow. Second operand 4 states and 274 transitions. [2023-11-29 05:38:00,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 164 transitions, 684 flow [2023-11-29 05:38:00,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 164 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:38:00,573 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 318 flow [2023-11-29 05:38:00,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-11-29 05:38:00,574 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2023-11-29 05:38:00,574 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 318 flow [2023-11-29 05:38:00,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-29 05:38:00,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:38:00,574 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 05:38:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:38:00,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:38:00,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1821890862, now seen corresponding path program 1 times [2023-11-29 05:38:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:00,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524225713] [2023-11-29 05:38:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:00,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:38:00,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:38:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:38:00,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:38:00,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:38:00,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-29 05:38:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-29 05:38:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-29 05:38:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-29 05:38:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-29 05:38:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:38:00,615 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-29 05:38:00,615 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:38:00,615 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 05:38:00,641 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-29 05:38:00,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 125 transitions, 305 flow [2023-11-29 05:38:00,683 INFO L124 PetriNetUnfolderBase]: 112/637 cut-off events. [2023-11-29 05:38:00,683 INFO L125 PetriNetUnfolderBase]: For 110/114 co-relation queries the response was YES. [2023-11-29 05:38:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 637 events. 112/637 cut-off events. For 110/114 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3435 event pairs, 23 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 472. Up to 80 conditions per place. [2023-11-29 05:38:00,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 125 transitions, 305 flow [2023-11-29 05:38:00,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 125 transitions, 305 flow [2023-11-29 05:38:00,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:38:00,688 INFO L357 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, mHoare=true, 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;@6f46b253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:38:00,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 05:38:00,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:38:00,690 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 05:38:00,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:38:00,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:38:00,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:38:00,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-29 05:38:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash 829652520, now seen corresponding path program 1 times [2023-11-29 05:38:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915577676] [2023-11-29 05:38:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:38:00,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:00,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915577676] [2023-11-29 05:38:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915577676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:00,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:00,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:38:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817893463] [2023-11-29 05:38:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:00,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:38:00,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:00,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:38:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:38:00,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 125 [2023-11-29 05:38:00,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 125 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2023-11-29 05:38:00,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:38:00,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 125 [2023-11-29 05:38:00,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand