./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU --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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:06,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:07,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:01:07,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:07,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:07,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:07,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:07,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:07,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:07,126 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:07,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:07,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:07,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:07,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:07,129 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:07,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:07,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:07,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:07,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:07,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:07,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:07,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:07,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:07,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:07,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:07,134 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:01:07,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:07,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:07,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:07,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:07,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:07,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:07,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:07,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:07,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:07,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:07,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:07,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:07,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:07,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:07,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:07,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:07,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:07,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:07,142 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_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2024-10-31 22:01:07,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:07,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:07,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:07,454 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:07,455 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:07,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i Unable to find full path for "g++" [2024-10-31 22:01:10,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:10,422 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:10,426 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-10-31 22:01:10,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/data/615c7ffab/fb8ab23b5a9549c5867bcb6a86efd270/FLAG7d0ab8114 [2024-10-31 22:01:10,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/data/615c7ffab/fb8ab23b5a9549c5867bcb6a86efd270 [2024-10-31 22:01:10,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:10,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:10,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:10,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:10,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:10,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f60af18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10, skipping insertion in model container [2024-10-31 22:01:10,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:11,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:11,310 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:11,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:11,530 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:11,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11 WrapperNode [2024-10-31 22:01:11,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:11,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:11,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:11,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:11,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,626 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 295 [2024-10-31 22:01:11,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:11,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:11,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:11,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:11,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,675 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 2, 70]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 5 writes are split as follows [0, 0, 1, 4]. [2024-10-31 22:01:11,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:11,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:11,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:11,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:11,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (1/1) ... [2024-10-31 22:01:11,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:11,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:11,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:01:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:01:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:01:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:01:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:01:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:01:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:01:11,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:01:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:01:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:01:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:01:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:01:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:01:11,817 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:01:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:01:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:01:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:01:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:11,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:11,823 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:01:12,078 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:12,081 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:12,724 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:01:12,724 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:13,368 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:13,369 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-31 22:01:13,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:13 BoogieIcfgContainer [2024-10-31 22:01:13,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:13,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:13,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:13,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:13,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:10" (1/3) ... [2024-10-31 22:01:13,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2e2c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:13, skipping insertion in model container [2024-10-31 22:01:13,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:11" (2/3) ... [2024-10-31 22:01:13,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2e2c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:13, skipping insertion in model container [2024-10-31 22:01:13,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:13" (3/3) ... [2024-10-31 22:01:13,383 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2024-10-31 22:01:13,403 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:13,403 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-31 22:01:13,403 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:01:13,464 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:01:13,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 115 transitions, 237 flow [2024-10-31 22:01:13,579 INFO L124 PetriNetUnfolderBase]: 35/162 cut-off events. [2024-10-31 22:01:13,579 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:01:13,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 35/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 639 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2024-10-31 22:01:13,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 115 transitions, 237 flow [2024-10-31 22:01:13,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 114 transitions, 235 flow [2024-10-31 22:01:13,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:13,617 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b628341, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:13,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-31 22:01:13,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:13,623 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:01:13,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:13,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:13,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:01:13,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:13,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:13,630 INFO L85 PathProgramCache]: Analyzing trace with hash 771884, now seen corresponding path program 1 times [2024-10-31 22:01:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:13,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846517770] [2024-10-31 22:01:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:14,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:14,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846517770] [2024-10-31 22:01:14,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846517770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:14,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:14,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391478462] [2024-10-31 22:01:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:14,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:14,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:14,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:14,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:14,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:14,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:14,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:14,768 INFO L124 PetriNetUnfolderBase]: 486/1500 cut-off events. [2024-10-31 22:01:14,768 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:01:14,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 1500 events. 486/1500 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10094 event pairs, 440 based on Foata normal form. 281/1596 useless extension candidates. Maximal degree in co-relation 2390. Up to 974 conditions per place. [2024-10-31 22:01:14,787 INFO L140 encePairwiseOnDemand]: 89/115 looper letters, 49 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-10-31 22:01:14,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 303 flow [2024-10-31 22:01:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-31 22:01:14,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5456521739130434 [2024-10-31 22:01:14,805 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 235 flow. Second operand 4 states and 251 transitions. [2024-10-31 22:01:14,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 303 flow [2024-10-31 22:01:14,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 303 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:14,815 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 219 flow [2024-10-31 22:01:14,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2024-10-31 22:01:14,823 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-10-31 22:01:14,824 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 219 flow [2024-10-31 22:01:14,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:14,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:14,824 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:01:14,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:14,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:14,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1521160478, now seen corresponding path program 1 times [2024-10-31 22:01:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49556314] [2024-10-31 22:01:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:15,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49556314] [2024-10-31 22:01:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49556314] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747402790] [2024-10-31 22:01:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:15,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:15,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:15,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:01:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:15,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:15,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:15,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:15,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747402790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:15,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:15,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:01:15,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19239577] [2024-10-31 22:01:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:15,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:15,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:01:15,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:15,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:15,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:15,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:15,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:15,669 INFO L124 PetriNetUnfolderBase]: 486/1499 cut-off events. [2024-10-31 22:01:15,669 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:01:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1499 events. 486/1499 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10095 event pairs, 440 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 2473. Up to 969 conditions per place. [2024-10-31 22:01:15,680 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 45 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2024-10-31 22:01:15,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 317 flow [2024-10-31 22:01:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2024-10-31 22:01:15,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4579710144927536 [2024-10-31 22:01:15,687 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 219 flow. Second operand 6 states and 316 transitions. [2024-10-31 22:01:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 317 flow [2024-10-31 22:01:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:15,693 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 225 flow [2024-10-31 22:01:15,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-10-31 22:01:15,695 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-31 22:01:15,695 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 225 flow [2024-10-31 22:01:15,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:15,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:15,696 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:01:15,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:15,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:15,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:15,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash -88664631, now seen corresponding path program 1 times [2024-10-31 22:01:15,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:15,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837095955] [2024-10-31 22:01:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:16,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837095955] [2024-10-31 22:01:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837095955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:16,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:16,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:16,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891389219] [2024-10-31 22:01:16,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:16,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:16,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:16,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:16,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:16,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:16,350 INFO L124 PetriNetUnfolderBase]: 486/1498 cut-off events. [2024-10-31 22:01:16,351 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-31 22:01:16,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2493 conditions, 1498 events. 486/1498 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10105 event pairs, 440 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 2469. Up to 972 conditions per place. [2024-10-31 22:01:16,361 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 46 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-10-31 22:01:16,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 321 flow [2024-10-31 22:01:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-10-31 22:01:16,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246376811594203 [2024-10-31 22:01:16,363 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 225 flow. Second operand 3 states and 181 transitions. [2024-10-31 22:01:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 321 flow [2024-10-31 22:01:16,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 299 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:01:16,370 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 207 flow [2024-10-31 22:01:16,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-10-31 22:01:16,371 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2024-10-31 22:01:16,372 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 207 flow [2024-10-31 22:01:16,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:16,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:16,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:01:16,373 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:16,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash 690917749, now seen corresponding path program 1 times [2024-10-31 22:01:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:16,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301487532] [2024-10-31 22:01:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:16,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:16,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:16,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301487532] [2024-10-31 22:01:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301487532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:16,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279280597] [2024-10-31 22:01:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:16,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:16,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:16,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:16,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:01:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:16,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:01:16,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:16,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:16,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279280597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:16,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:16,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:01:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934422635] [2024-10-31 22:01:16,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:16,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:16,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:16,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 207 flow. Second operand has 10 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:17,304 INFO L124 PetriNetUnfolderBase]: 486/1502 cut-off events. [2024-10-31 22:01:17,305 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-31 22:01:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1502 events. 486/1502 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10127 event pairs, 440 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 2462. Up to 970 conditions per place. [2024-10-31 22:01:17,314 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 46 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2024-10-31 22:01:17,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 328 flow [2024-10-31 22:01:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:01:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:01:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 363 transitions. [2024-10-31 22:01:17,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509316770186335 [2024-10-31 22:01:17,317 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 207 flow. Second operand 7 states and 363 transitions. [2024-10-31 22:01:17,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 328 flow [2024-10-31 22:01:17,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:17,321 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 233 flow [2024-10-31 22:01:17,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-10-31 22:01:17,324 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-31 22:01:17,324 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 233 flow [2024-10-31 22:01:17,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:17,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:17,326 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:17,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:01:17,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:17,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:17,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2147032011, now seen corresponding path program 2 times [2024-10-31 22:01:17,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:17,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701682839] [2024-10-31 22:01:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:01:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701682839] [2024-10-31 22:01:17,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701682839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:17,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:17,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:17,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165944886] [2024-10-31 22:01:17,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:17,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:17,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:17,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 115 [2024-10-31 22:01:17,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:17,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:17,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 115 [2024-10-31 22:01:17,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:18,072 INFO L124 PetriNetUnfolderBase]: 483/1378 cut-off events. [2024-10-31 22:01:18,073 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:01:18,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1378 events. 483/1378 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9164 event pairs, 0 based on Foata normal form. 21/1266 useless extension candidates. Maximal degree in co-relation 2339. Up to 912 conditions per place. [2024-10-31 22:01:18,080 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 92 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-10-31 22:01:18,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 501 flow [2024-10-31 22:01:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-10-31 22:01:18,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-10-31 22:01:18,082 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 233 flow. Second operand 4 states and 265 transitions. [2024-10-31 22:01:18,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 501 flow [2024-10-31 22:01:18,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 136 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:18,089 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 235 flow [2024-10-31 22:01:18,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-10-31 22:01:18,090 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-31 22:01:18,090 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 235 flow [2024-10-31 22:01:18,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:18,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:18,093 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:18,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:01:18,094 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:18,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1712235338, now seen corresponding path program 1 times [2024-10-31 22:01:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184657988] [2024-10-31 22:01:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:01:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184657988] [2024-10-31 22:01:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184657988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:18,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:18,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110913099] [2024-10-31 22:01:18,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:18,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:18,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:18,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 235 flow. Second operand has 4 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) [2024-10-31 22:01:18,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:18,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:18,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:18,673 INFO L124 PetriNetUnfolderBase]: 506/1511 cut-off events. [2024-10-31 22:01:18,673 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-31 22:01:18,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 1511 events. 506/1511 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10147 event pairs, 378 based on Foata normal form. 23/1365 useless extension candidates. Maximal degree in co-relation 2542. Up to 875 conditions per place. [2024-10-31 22:01:18,684 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 95 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-10-31 22:01:18,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 138 transitions, 525 flow [2024-10-31 22:01:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-10-31 22:01:18,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-10-31 22:01:18,686 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 235 flow. Second operand 4 states and 270 transitions. [2024-10-31 22:01:18,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 138 transitions, 525 flow [2024-10-31 22:01:18,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:01:18,690 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 233 flow [2024-10-31 22:01:18,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-10-31 22:01:18,691 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-31 22:01:18,691 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 233 flow [2024-10-31 22:01:18,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2024-10-31 22:01:18,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:18,692 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:18,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:01:18,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:18,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1576847517, now seen corresponding path program 1 times [2024-10-31 22:01:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:18,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900365929] [2024-10-31 22:01:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:18,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900365929] [2024-10-31 22:01:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900365929] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128950631] [2024-10-31 22:01:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:18,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:18,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:18,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:18,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:01:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:18,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:01:19,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:19,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128950631] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:19,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:19,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-31 22:01:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056007012] [2024-10-31 22:01:19,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:19,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:01:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:19,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:01:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:01:19,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:19,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 233 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:19,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:19,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:19,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:19,757 INFO L124 PetriNetUnfolderBase]: 485/1486 cut-off events. [2024-10-31 22:01:19,757 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-31 22:01:19,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1486 events. 485/1486 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9841 event pairs, 440 based on Foata normal form. 4/1340 useless extension candidates. Maximal degree in co-relation 2503. Up to 946 conditions per place. [2024-10-31 22:01:19,767 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 46 selfloop transitions, 15 changer transitions 0/102 dead transitions. [2024-10-31 22:01:19,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 403 flow [2024-10-31 22:01:19,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:01:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 22:01:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 725 transitions. [2024-10-31 22:01:19,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-10-31 22:01:19,771 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 233 flow. Second operand 15 states and 725 transitions. [2024-10-31 22:01:19,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 403 flow [2024-10-31 22:01:19,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 102 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:01:19,779 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 324 flow [2024-10-31 22:01:19,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=324, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-10-31 22:01:19,784 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 23 predicate places. [2024-10-31 22:01:19,785 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 324 flow [2024-10-31 22:01:19,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:19,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:19,786 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:19,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:01:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:01:19,990 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:19,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1075565027, now seen corresponding path program 2 times [2024-10-31 22:01:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:19,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139132467] [2024-10-31 22:01:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139132467] [2024-10-31 22:01:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139132467] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:20,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893490710] [2024-10-31 22:01:20,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:20,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:20,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:20,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:01:20,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:01:20,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:20,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 22:01:20,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:20,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:20,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893490710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:20,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:20,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-31 22:01:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820991005] [2024-10-31 22:01:20,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:20,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:01:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:01:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:01:21,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-31 22:01:21,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 324 flow. Second operand has 23 states, 23 states have (on average 45.21739130434783) internal successors, (1040), 23 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:21,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:21,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-31 22:01:21,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:21,626 INFO L124 PetriNetUnfolderBase]: 485/1486 cut-off events. [2024-10-31 22:01:21,627 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-31 22:01:21,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 1486 events. 485/1486 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9748 event pairs, 440 based on Foata normal form. 3/1343 useless extension candidates. Maximal degree in co-relation 2430. Up to 947 conditions per place. [2024-10-31 22:01:21,638 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 46 selfloop transitions, 21 changer transitions 0/108 dead transitions. [2024-10-31 22:01:21,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 108 transitions, 512 flow [2024-10-31 22:01:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-31 22:01:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-31 22:01:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 994 transitions. [2024-10-31 22:01:21,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4115942028985507 [2024-10-31 22:01:21,642 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 324 flow. Second operand 21 states and 994 transitions. [2024-10-31 22:01:21,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 108 transitions, 512 flow [2024-10-31 22:01:21,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 108 transitions, 502 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 22:01:21,647 INFO L231 Difference]: Finished difference. Result has 136 places, 108 transitions, 425 flow [2024-10-31 22:01:21,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=425, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2024-10-31 22:01:21,648 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 42 predicate places. [2024-10-31 22:01:21,648 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 425 flow [2024-10-31 22:01:21,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 45.21739130434783) internal successors, (1040), 23 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:21,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:21,650 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:21,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:21,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:01:21,853 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-31 22:01:21,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1720447857, now seen corresponding path program 3 times [2024-10-31 22:01:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:21,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905501330] [2024-10-31 22:01:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:21,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:21,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:01:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:22,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:01:22,045 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:01:22,046 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-31 22:01:22,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-10-31 22:01:22,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-10-31 22:01:22,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-10-31 22:01:22,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-10-31 22:01:22,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-10-31 22:01:22,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-10-31 22:01:22,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-10-31 22:01:22,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-10-31 22:01:22,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-10-31 22:01:22,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-10-31 22:01:22,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-10-31 22:01:22,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-10-31 22:01:22,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-10-31 22:01:22,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2024-10-31 22:01:22,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2024-10-31 22:01:22,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2024-10-31 22:01:22,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-10-31 22:01:22,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-10-31 22:01:22,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-10-31 22:01:22,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-10-31 22:01:22,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-10-31 22:01:22,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-10-31 22:01:22,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:01:22,056 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2024-10-31 22:01:22,059 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:01:22,059 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:01:22,114 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:01:22,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 165 transitions, 346 flow [2024-10-31 22:01:22,155 INFO L124 PetriNetUnfolderBase]: 59/278 cut-off events. [2024-10-31 22:01:22,155 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:01:22,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 278 events. 59/278 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1290 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 164. Up to 12 conditions per place. [2024-10-31 22:01:22,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 165 transitions, 346 flow [2024-10-31 22:01:22,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 165 transitions, 346 flow [2024-10-31 22:01:22,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:22,170 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b628341, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:22,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-31 22:01:22,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:22,172 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:01:22,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:22,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:22,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:01:22,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-31 22:01:22,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash 935729, now seen corresponding path program 1 times [2024-10-31 22:01:22,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:22,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367857308] [2024-10-31 22:01:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:22,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367857308] [2024-10-31 22:01:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367857308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:22,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:22,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:22,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17706013] [2024-10-31 22:01:22,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:22,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:22,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:22,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:22,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-31 22:01:22,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 165 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:22,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:22,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-31 22:01:22,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:27,727 INFO L124 PetriNetUnfolderBase]: 20921/44082 cut-off events. [2024-10-31 22:01:27,728 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-10-31 22:01:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75381 conditions, 44082 events. 20921/44082 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449962 event pairs, 19440 based on Foata normal form. 9270/48624 useless extension candidates. Maximal degree in co-relation 59170. Up to 31185 conditions per place. [2024-10-31 22:01:28,106 INFO L140 encePairwiseOnDemand]: 129/165 looper letters, 72 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-10-31 22:01:28,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 137 transitions, 440 flow [2024-10-31 22:01:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2024-10-31 22:01:28,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-10-31 22:01:28,111 INFO L175 Difference]: Start difference. First operand has 134 places, 165 transitions, 346 flow. Second operand 4 states and 356 transitions. [2024-10-31 22:01:28,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 137 transitions, 440 flow [2024-10-31 22:01:28,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:28,115 INFO L231 Difference]: Finished difference. Result has 139 places, 137 transitions, 310 flow [2024-10-31 22:01:28,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=139, PETRI_TRANSITIONS=137} [2024-10-31 22:01:28,117 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 5 predicate places. [2024-10-31 22:01:28,118 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 137 transitions, 310 flow [2024-10-31 22:01:28,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:28,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:28,119 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:01:28,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:01:28,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-31 22:01:28,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:28,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2107463422, now seen corresponding path program 1 times [2024-10-31 22:01:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:28,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492014464] [2024-10-31 22:01:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:28,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492014464] [2024-10-31 22:01:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492014464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901128245] [2024-10-31 22:01:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:28,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:28,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:01:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:28,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:28,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:28,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:28,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901128245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:01:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153515115] [2024-10-31 22:01:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:28,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:01:28,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-31 22:01:28,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 137 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:28,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:28,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-31 22:01:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:33,103 INFO L124 PetriNetUnfolderBase]: 20921/44081 cut-off events. [2024-10-31 22:01:33,103 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-31 22:01:33,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75391 conditions, 44081 events. 20921/44081 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449849 event pairs, 19440 based on Foata normal form. 1/39354 useless extension candidates. Maximal degree in co-relation 75372. Up to 31180 conditions per place. [2024-10-31 22:01:33,393 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 68 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-10-31 22:01:33,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 454 flow [2024-10-31 22:01:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 447 transitions. [2024-10-31 22:01:33,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2024-10-31 22:01:33,396 INFO L175 Difference]: Start difference. First operand has 139 places, 137 transitions, 310 flow. Second operand 6 states and 447 transitions. [2024-10-31 22:01:33,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 454 flow [2024-10-31 22:01:33,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:33,399 INFO L231 Difference]: Finished difference. Result has 142 places, 136 transitions, 316 flow [2024-10-31 22:01:33,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2024-10-31 22:01:33,401 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 8 predicate places. [2024-10-31 22:01:33,401 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 316 flow [2024-10-31 22:01:33,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:33,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:33,402 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:01:33,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:01:33,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:33,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-31 22:01:33,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash 906857614, now seen corresponding path program 1 times [2024-10-31 22:01:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379963837] [2024-10-31 22:01:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:33,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379963837] [2024-10-31 22:01:33,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379963837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:33,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:33,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:33,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828965280] [2024-10-31 22:01:33,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:33,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:33,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-31 22:01:33,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:33,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:33,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-31 22:01:33,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:37,911 INFO L124 PetriNetUnfolderBase]: 20921/44080 cut-off events. [2024-10-31 22:01:37,911 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-10-31 22:01:38,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75393 conditions, 44080 events. 20921/44080 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449976 event pairs, 19440 based on Foata normal form. 1/39354 useless extension candidates. Maximal degree in co-relation 75368. Up to 31183 conditions per place. [2024-10-31 22:01:38,226 INFO L140 encePairwiseOnDemand]: 162/165 looper letters, 69 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-10-31 22:01:38,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 458 flow [2024-10-31 22:01:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-10-31 22:01:38,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-10-31 22:01:38,229 INFO L175 Difference]: Start difference. First operand has 142 places, 136 transitions, 316 flow. Second operand 3 states and 258 transitions. [2024-10-31 22:01:38,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 458 flow [2024-10-31 22:01:38,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 436 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:01:38,234 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 298 flow [2024-10-31 22:01:38,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2024-10-31 22:01:38,235 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2024-10-31 22:01:38,236 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 298 flow [2024-10-31 22:01:38,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:38,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:38,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:38,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:01:38,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-31 22:01:38,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash -389860406, now seen corresponding path program 1 times [2024-10-31 22:01:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:38,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335837056] [2024-10-31 22:01:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:38,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335837056] [2024-10-31 22:01:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335837056] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045137135] [2024-10-31 22:01:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:38,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:38,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:38,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59ccbb8-b7e3-4e8f-96d5-cc9cfef20ddc/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:01:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:38,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:01:38,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:38,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045137135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:38,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:38,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:01:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271385941] [2024-10-31 22:01:38,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:38,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:38,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:38,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-31 22:01:38,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 298 flow. Second operand has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:38,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:38,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-31 22:01:38,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand