./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme --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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:12,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:12,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:43:12,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:12,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:12,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:12,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:12,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:12,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:12,324 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:12,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:12,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:12,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:12,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:12,327 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:12,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:12,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:12,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:12,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:12,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:12,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:12,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:12,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:12,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:12,333 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:43:12,333 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:12,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:12,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:12,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:12,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:12,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:12,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:12,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:12,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:12,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:12,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:12,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:12,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:12,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:12,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:12,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:12,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:12,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:12,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:12,339 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_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2023-11-26 10:43:12,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:12,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:12,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:12,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:12,602 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:12,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2023-11-26 10:43:15,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:16,134 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:16,134 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2023-11-26 10:43:16,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/data/51e3b0958/aa6b2d52ed5a4f22b1468cc1429a78dd/FLAG1d1422308 [2023-11-26 10:43:16,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/data/51e3b0958/aa6b2d52ed5a4f22b1468cc1429a78dd [2023-11-26 10:43:16,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:16,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:16,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:16,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:16,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:16,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e31d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16, skipping insertion in model container [2023-11-26 10:43:16,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:16,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:16,640 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:16,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:16,757 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:16,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16 WrapperNode [2023-11-26 10:43:16,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:16,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:16,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:16,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:16,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,808 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2023-11-26 10:43:16,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:16,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:16,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:16,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:16,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,858 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2023-11-26 10:43:16,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:16,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:16,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:16,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:16,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (1/1) ... [2023-11-26 10:43:16,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:16,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:16,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:16,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:43:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:43:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:43:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:43:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:43:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:43:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:43:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:43:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:43:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:43:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:43:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:43:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:43:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:43:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:43:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:43:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:43:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:43:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:17,031 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:43:17,184 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:17,187 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:17,548 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:17,802 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:17,803 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 10:43:17,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:17 BoogieIcfgContainer [2023-11-26 10:43:17,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:17,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:17,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:17,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:17,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:16" (1/3) ... [2023-11-26 10:43:17,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e75f586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:17, skipping insertion in model container [2023-11-26 10:43:17,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:16" (2/3) ... [2023-11-26 10:43:17,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e75f586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:17, skipping insertion in model container [2023-11-26 10:43:17,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:17" (3/3) ... [2023-11-26 10:43:17,814 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-11-26 10:43:17,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:43:17,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:17,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 10:43:17,836 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:43:17,890 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 10:43:17,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 57 transitions, 121 flow [2023-11-26 10:43:18,001 INFO L124 PetriNetUnfolderBase]: 11/69 cut-off events. [2023-11-26 10:43:18,002 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:43:18,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 11/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 187 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2023-11-26 10:43:18,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 57 transitions, 121 flow [2023-11-26 10:43:18,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 56 transitions, 119 flow [2023-11-26 10:43:18,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:18,034 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bfca68d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:18,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 10:43:18,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:18,041 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-26 10:43:18,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:18,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:18,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:18,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:43:18,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash 367382173, now seen corresponding path program 1 times [2023-11-26 10:43:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:18,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224968438] [2023-11-26 10:43:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:18,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:18,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224968438] [2023-11-26 10:43:18,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224968438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:18,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:18,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318451317] [2023-11-26 10:43:18,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:18,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:18,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2023-11-26 10:43:18,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:18,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:18,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2023-11-26 10:43:18,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:18,847 INFO L124 PetriNetUnfolderBase]: 99/302 cut-off events. [2023-11-26 10:43:18,848 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:43:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 302 events. 99/302 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1410 event pairs, 0 based on Foata normal form. 64/335 useless extension candidates. Maximal degree in co-relation 500. Up to 187 conditions per place. [2023-11-26 10:43:18,855 INFO L140 encePairwiseOnDemand]: 43/57 looper letters, 44 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-26 10:43:18,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 239 flow [2023-11-26 10:43:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2023-11-26 10:43:18,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2023-11-26 10:43:18,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 158 transitions. [2023-11-26 10:43:18,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 158 transitions. [2023-11-26 10:43:18,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:18,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 158 transitions. [2023-11-26 10:43:18,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:18,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:18,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:18,898 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 119 flow. Second operand 4 states and 158 transitions. [2023-11-26 10:43:18,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 239 flow [2023-11-26 10:43:18,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 239 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:18,912 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 109 flow [2023-11-26 10:43:18,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-26 10:43:18,920 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-26 10:43:18,921 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 109 flow [2023-11-26 10:43:18,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:18,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:18,921 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:18,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:18,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:43:18,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1106000046, now seen corresponding path program 1 times [2023-11-26 10:43:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:18,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275499568] [2023-11-26 10:43:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:18,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:18,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:19,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:19,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:19,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-26 10:43:19,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 10:43:19,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 10:43:19,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 10:43:19,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-26 10:43:19,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 10:43:19,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-26 10:43:19,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-26 10:43:19,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-26 10:43:19,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 10:43:19,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 10:43:19,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 10:43:19,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 10:43:19,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:43:19,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 10:43:19,053 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:43:19,053 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:43:19,085 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:43:19,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 90 transitions, 196 flow [2023-11-26 10:43:19,108 INFO L124 PetriNetUnfolderBase]: 21/133 cut-off events. [2023-11-26 10:43:19,108 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:43:19,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 133 events. 21/133 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 486 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-11-26 10:43:19,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 90 transitions, 196 flow [2023-11-26 10:43:19,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 90 transitions, 196 flow [2023-11-26 10:43:19,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:19,117 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bfca68d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:19,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 10:43:19,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:19,121 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-26 10:43:19,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:19,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:19,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:19,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:19,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash 453299414, now seen corresponding path program 1 times [2023-11-26 10:43:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30015071] [2023-11-26 10:43:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:19,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30015071] [2023-11-26 10:43:19,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30015071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:19,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871348810] [2023-11-26 10:43:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:19,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2023-11-26 10:43:19,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:19,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:19,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2023-11-26 10:43:19,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:20,437 INFO L124 PetriNetUnfolderBase]: 3225/7101 cut-off events. [2023-11-26 10:43:20,437 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-11-26 10:43:20,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12333 conditions, 7101 events. 3225/7101 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 59659 event pairs, 1507 based on Foata normal form. 1375/7653 useless extension candidates. Maximal degree in co-relation 980. Up to 5128 conditions per place. [2023-11-26 10:43:20,502 INFO L140 encePairwiseOnDemand]: 70/90 looper letters, 62 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-11-26 10:43:20,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 348 flow [2023-11-26 10:43:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-11-26 10:43:20,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2023-11-26 10:43:20,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-11-26 10:43:20,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-11-26 10:43:20,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:20,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-11-26 10:43:20,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,511 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,511 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 196 flow. Second operand 4 states and 238 transitions. [2023-11-26 10:43:20,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 348 flow [2023-11-26 10:43:20,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:20,516 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 192 flow [2023-11-26 10:43:20,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-11-26 10:43:20,518 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-11-26 10:43:20,518 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 192 flow [2023-11-26 10:43:20,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:20,519 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:43:20,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:20,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash -894177308, now seen corresponding path program 1 times [2023-11-26 10:43:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403953896] [2023-11-26 10:43:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403953896] [2023-11-26 10:43:20,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403953896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874674928] [2023-11-26 10:43:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:20,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:20,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:20,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:20,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:20,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:20,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874674928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:20,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:20,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:43:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810775964] [2023-11-26 10:43:20,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:20,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2023-11-26 10:43:20,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:20,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2023-11-26 10:43:20,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:21,945 INFO L124 PetriNetUnfolderBase]: 2961/6081 cut-off events. [2023-11-26 10:43:21,945 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2023-11-26 10:43:21,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11545 conditions, 6081 events. 2961/6081 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 48011 event pairs, 252 based on Foata normal form. 144/5729 useless extension candidates. Maximal degree in co-relation 957. Up to 2766 conditions per place. [2023-11-26 10:43:22,000 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 102 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2023-11-26 10:43:22,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 538 flow [2023-11-26 10:43:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:43:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:43:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 325 transitions. [2023-11-26 10:43:22,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2023-11-26 10:43:22,004 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 325 transitions. [2023-11-26 10:43:22,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 325 transitions. [2023-11-26 10:43:22,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:22,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 325 transitions. [2023-11-26 10:43:22,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,010 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 192 flow. Second operand 6 states and 325 transitions. [2023-11-26 10:43:22,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 538 flow [2023-11-26 10:43:22,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:22,016 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 198 flow [2023-11-26 10:43:22,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2023-11-26 10:43:22,018 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2023-11-26 10:43:22,018 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 198 flow [2023-11-26 10:43:22,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:22,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:22,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:22,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:22,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:22,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash 221900040, now seen corresponding path program 1 times [2023-11-26 10:43:22,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:22,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594904856] [2023-11-26 10:43:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:22,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594904856] [2023-11-26 10:43:22,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594904856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:22,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:22,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421933822] [2023-11-26 10:43:22,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:22,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:22,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2023-11-26 10:43:22,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:22,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2023-11-26 10:43:22,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:23,549 INFO L124 PetriNetUnfolderBase]: 3161/6809 cut-off events. [2023-11-26 10:43:23,549 INFO L125 PetriNetUnfolderBase]: For 1987/2140 co-relation queries the response was YES. [2023-11-26 10:43:23,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13073 conditions, 6809 events. 3161/6809 cut-off events. For 1987/2140 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 55267 event pairs, 1025 based on Foata normal form. 135/6361 useless extension candidates. Maximal degree in co-relation 10265. Up to 4474 conditions per place. [2023-11-26 10:43:23,605 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 92 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2023-11-26 10:43:23,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 133 transitions, 575 flow [2023-11-26 10:43:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 276 transitions. [2023-11-26 10:43:23,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2023-11-26 10:43:23,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 276 transitions. [2023-11-26 10:43:23,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 276 transitions. [2023-11-26 10:43:23,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:23,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 276 transitions. [2023-11-26 10:43:23,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.2) internal successors, (276), 5 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,612 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 198 flow. Second operand 5 states and 276 transitions. [2023-11-26 10:43:23,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 133 transitions, 575 flow [2023-11-26 10:43:23,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 540 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-26 10:43:23,623 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 230 flow [2023-11-26 10:43:23,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-11-26 10:43:23,625 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2023-11-26 10:43:23,625 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 230 flow [2023-11-26 10:43:23,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:23,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:43:23,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:43:23,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:23,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1949692325, now seen corresponding path program 1 times [2023-11-26 10:43:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:23,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991519356] [2023-11-26 10:43:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:43:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991519356] [2023-11-26 10:43:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991519356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:23,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:23,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:23,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492215761] [2023-11-26 10:43:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:23,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2023-11-26 10:43:23,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:23,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2023-11-26 10:43:23,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:24,655 INFO L124 PetriNetUnfolderBase]: 2852/5729 cut-off events. [2023-11-26 10:43:24,656 INFO L125 PetriNetUnfolderBase]: For 1475/1475 co-relation queries the response was YES. [2023-11-26 10:43:24,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11662 conditions, 5729 events. 2852/5729 cut-off events. For 1475/1475 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 43406 event pairs, 253 based on Foata normal form. 152/5570 useless extension candidates. Maximal degree in co-relation 10813. Up to 3388 conditions per place. [2023-11-26 10:43:24,705 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 94 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2023-11-26 10:43:24,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 582 flow [2023-11-26 10:43:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-26 10:43:24,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-26 10:43:24,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-26 10:43:24,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-26 10:43:24,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:24,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-26 10:43:24,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,711 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,712 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 230 flow. Second operand 4 states and 228 transitions. [2023-11-26 10:43:24,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 582 flow [2023-11-26 10:43:24,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 136 transitions, 578 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:24,722 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 242 flow [2023-11-26 10:43:24,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2023-11-26 10:43:24,724 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2023-11-26 10:43:24,724 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 242 flow [2023-11-26 10:43:24,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:24,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 10:43:24,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:43:24,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:43:24,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1048569024, now seen corresponding path program 1 times [2023-11-26 10:43:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267163820] [2023-11-26 10:43:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:24,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:24,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:24,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:24,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:43:24,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 10:43:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-26 10:43:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-26 10:43:24,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-26 10:43:24,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-26 10:43:24,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-26 10:43:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-26 10:43:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-26 10:43:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-26 10:43:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-26 10:43:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-26 10:43:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-26 10:43:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-26 10:43:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-26 10:43:24,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-26 10:43:24,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-26 10:43:24,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-26 10:43:24,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:43:24,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 10:43:24,805 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:43:24,805 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 10:43:24,863 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 10:43:24,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 123 transitions, 273 flow [2023-11-26 10:43:24,904 INFO L124 PetriNetUnfolderBase]: 34/216 cut-off events. [2023-11-26 10:43:24,905 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 10:43:24,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 216 events. 34/216 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 878 event pairs, 1 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-11-26 10:43:24,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 123 transitions, 273 flow [2023-11-26 10:43:24,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 123 transitions, 273 flow [2023-11-26 10:43:24,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:24,915 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bfca68d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:24,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 10:43:24,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:24,919 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-26 10:43:24,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:24,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:24,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:24,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:24,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash 570708720, now seen corresponding path program 1 times [2023-11-26 10:43:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251956826] [2023-11-26 10:43:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:24,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:24,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251956826] [2023-11-26 10:43:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251956826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:24,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:24,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:24,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660045260] [2023-11-26 10:43:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:24,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:24,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2023-11-26 10:43:24,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:24,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2023-11-26 10:43:24,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:37,944 INFO L124 PetriNetUnfolderBase]: 62372/113289 cut-off events. [2023-11-26 10:43:37,944 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2023-11-26 10:43:38,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201358 conditions, 113289 events. 62372/113289 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 2797. Compared 1179460 event pairs, 40346 based on Foata normal form. 24572/126231 useless extension candidates. Maximal degree in co-relation 13947. Up to 86907 conditions per place. [2023-11-26 10:43:39,080 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 75 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2023-11-26 10:43:39,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 128 transitions, 439 flow [2023-11-26 10:43:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-11-26 10:43:39,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6361788617886179 [2023-11-26 10:43:39,085 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-11-26 10:43:39,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-11-26 10:43:39,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:39,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-11-26 10:43:39,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,089 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 273 flow. Second operand 4 states and 313 transitions. [2023-11-26 10:43:39,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 128 transitions, 439 flow [2023-11-26 10:43:39,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 128 transitions, 439 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:39,100 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 257 flow [2023-11-26 10:43:39,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2023-11-26 10:43:39,102 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2023-11-26 10:43:39,103 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 257 flow [2023-11-26 10:43:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:39,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:43:39,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:39,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1485776409, now seen corresponding path program 1 times [2023-11-26 10:43:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:39,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047216135] [2023-11-26 10:43:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047216135] [2023-11-26 10:43:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047216135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:39,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532540393] [2023-11-26 10:43:39,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:39,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:39,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:39,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:39,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:39,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2023-11-26 10:43:39,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:39,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2023-11-26 10:43:39,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:50,885 INFO L124 PetriNetUnfolderBase]: 64032/112070 cut-off events. [2023-11-26 10:43:50,885 INFO L125 PetriNetUnfolderBase]: For 8756/13199 co-relation queries the response was YES. [2023-11-26 10:43:51,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209700 conditions, 112070 events. 64032/112070 cut-off events. For 8756/13199 co-relation queries the response was YES. Maximal size of possible extension queue 2828. Compared 1116377 event pairs, 26564 based on Foata normal form. 1679/105058 useless extension candidates. Maximal degree in co-relation 180705. Up to 82932 conditions per place. [2023-11-26 10:43:51,947 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 130 selfloop transitions, 8 changer transitions 0/188 dead transitions. [2023-11-26 10:43:51,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 188 transitions, 768 flow [2023-11-26 10:43:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-11-26 10:43:51,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276422764227643 [2023-11-26 10:43:51,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-11-26 10:43:51,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-11-26 10:43:51,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:51,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-11-26 10:43:51,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:51,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:51,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:51,956 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 257 flow. Second operand 5 states and 386 transitions. [2023-11-26 10:43:51,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 188 transitions, 768 flow [2023-11-26 10:43:51,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 188 transitions, 764 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:51,967 INFO L231 Difference]: Finished difference. Result has 118 places, 112 transitions, 316 flow [2023-11-26 10:43:51,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=118, PETRI_TRANSITIONS=112} [2023-11-26 10:43:51,969 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2023-11-26 10:43:51,970 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 112 transitions, 316 flow [2023-11-26 10:43:51,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:51,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:51,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:43:51,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:43:51,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 668315684, now seen corresponding path program 1 times [2023-11-26 10:43:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496653299] [2023-11-26 10:43:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:52,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496653299] [2023-11-26 10:43:52,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496653299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:52,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278625268] [2023-11-26 10:43:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:52,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:52,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:52,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:52,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:52,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:52,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278625268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:52,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:52,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:43:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242358572] [2023-11-26 10:43:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:52,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2023-11-26 10:43:52,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 112 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:52,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:52,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2023-11-26 10:43:52,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:44:04,128 INFO L124 PetriNetUnfolderBase]: 64127/107385 cut-off events. [2023-11-26 10:44:04,128 INFO L125 PetriNetUnfolderBase]: For 25461/25461 co-relation queries the response was YES. [2023-11-26 10:44:04,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222992 conditions, 107385 events. 64127/107385 cut-off events. For 25461/25461 co-relation queries the response was YES. Maximal size of possible extension queue 2525. Compared 1031767 event pairs, 9659 based on Foata normal form. 2136/101555 useless extension candidates. Maximal degree in co-relation 194228. Up to 52978 conditions per place. [2023-11-26 10:44:04,777 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 158 selfloop transitions, 6 changer transitions 0/214 dead transitions. [2023-11-26 10:44:04,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 214 transitions, 932 flow [2023-11-26 10:44:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:44:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2023-11-26 10:44:04,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2023-11-26 10:44:04,786 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2023-11-26 10:44:04,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2023-11-26 10:44:04,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:44:04,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2023-11-26 10:44:04,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:04,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:04,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:04,796 INFO L175 Difference]: Start difference. First operand has 118 places, 112 transitions, 316 flow. Second operand 6 states and 444 transitions. [2023-11-26 10:44:04,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 214 transitions, 932 flow [2023-11-26 10:44:04,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 214 transitions, 932 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:44:04,832 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 324 flow [2023-11-26 10:44:04,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2023-11-26 10:44:04,836 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 15 predicate places. [2023-11-26 10:44:04,836 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 324 flow [2023-11-26 10:44:04,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:04,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:44:04,837 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:44:04,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:05,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061bd685-8f05-4a89-b062-deb4a582cd6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:44:05,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 10:44:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -757049706, now seen corresponding path program 1 times [2023-11-26 10:44:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679649156] [2023-11-26 10:44:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:44:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679649156] [2023-11-26 10:44:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679649156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986354806] [2023-11-26 10:44:05,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:05,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:05,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2023-11-26 10:44:05,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 111 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:05,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:44:05,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2023-11-26 10:44:05,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand