./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-1.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_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:34:15,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:34:15,363 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:34:15,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:34:15,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:34:15,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:34:15,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:34:15,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:34:15,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:34:15,396 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:34:15,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:34:15,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:34:15,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:34:15,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:34:15,399 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:34:15,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:34:15,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:34:15,401 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:34:15,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:34:15,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:34:15,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:34:15,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:34:15,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:34:15,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:34:15,404 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:34:15,405 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:34:15,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:34:15,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:34:15,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:34:15,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:34:15,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:34:15,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:34:15,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:34:15,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:34:15,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:34:15,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:34:15,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:34:15,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:34:15,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:34:15,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:34:15,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:34:15,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:34:15,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:34:15,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:34:15,410 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_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2023-11-29 06:34:15,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:34:15,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:34:15,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:34:15,661 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:34:15,662 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:34:15,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/stack-1.i [2023-11-29 06:34:18,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:34:18,921 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:34:18,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/sv-benchmarks/c/pthread/stack-1.i [2023-11-29 06:34:18,944 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/data/78b934386/56957fd36c91447fb5ee6fdce92c53bd/FLAG1d82cdd2a [2023-11-29 06:34:18,962 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/data/78b934386/56957fd36c91447fb5ee6fdce92c53bd [2023-11-29 06:34:18,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:34:18,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:34:18,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:18,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:34:18,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:34:18,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:18" (1/1) ... [2023-11-29 06:34:18,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c38576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:18, skipping insertion in model container [2023-11-29 06:34:18,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:18" (1/1) ... [2023-11-29 06:34:19,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:34:19,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:19,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:34:19,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:19,848 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:34:19,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19 WrapperNode [2023-11-29 06:34:19,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:19,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:19,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:34:19,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:34:19,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,931 INFO L138 Inliner]: procedures = 278, calls = 46, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 172 [2023-11-29 06:34:19,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:19,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:34:19,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:34:19,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:34:19,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,983 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 7, 5, 2, 2]. 39 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0]. The 3 writes are split as follows [0, 1, 0, 1, 1]. [2023-11-29 06:34:19,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:19,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:20,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:20,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:20,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:20,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:34:20,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:34:20,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:34:20,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:34:20,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (1/1) ... [2023-11-29 06:34:20,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:34:20,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:20,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:34:20,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:34:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 06:34:20,103 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 06:34:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 06:34:20,103 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 06:34:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:34:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:34:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:34:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:34:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:34:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:34:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:34:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:34:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:34:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:34:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:34:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:34:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:34:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:34:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:34:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:34:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:34:20,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:34:20,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:34:20,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:34:20,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:34:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:34:20,111 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:34:20,313 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:34:20,316 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:34:20,686 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:34:20,915 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:34:20,916 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:34:20,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:20 BoogieIcfgContainer [2023-11-29 06:34:20,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:34:20,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:34:20,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:34:20,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:34:20,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:34:18" (1/3) ... [2023-11-29 06:34:20,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329c838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:34:20, skipping insertion in model container [2023-11-29 06:34:20,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:19" (2/3) ... [2023-11-29 06:34:20,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329c838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:34:20, skipping insertion in model container [2023-11-29 06:34:20,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:20" (3/3) ... [2023-11-29 06:34:20,927 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-11-29 06:34:20,938 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:34:20,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:34:20,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 06:34:20,950 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:34:21,025 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 06:34:21,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 49 transitions, 112 flow [2023-11-29 06:34:21,108 INFO L124 PetriNetUnfolderBase]: 5/47 cut-off events. [2023-11-29 06:34:21,108 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 06:34:21,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 5/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-29 06:34:21,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 49 transitions, 112 flow [2023-11-29 06:34:21,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 45 transitions, 99 flow [2023-11-29 06:34:21,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:34:21,140 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;@7e4df49d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:34:21,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 06:34:21,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:34:21,152 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-29 06:34:21,152 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:34:21,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:21,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:21,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:21,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1307501684, now seen corresponding path program 1 times [2023-11-29 06:34:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482666490] [2023-11-29 06:34:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482666490] [2023-11-29 06:34:21,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482666490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:21,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:21,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:34:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208142834] [2023-11-29 06:34:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:34:21,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:34:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:34:21,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:34:21,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:21,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:21,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:34:21,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:22,241 INFO L124 PetriNetUnfolderBase]: 750/1483 cut-off events. [2023-11-29 06:34:22,242 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-29 06:34:22,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 1483 events. 750/1483 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7910 event pairs, 234 based on Foata normal form. 41/1373 useless extension candidates. Maximal degree in co-relation 2569. Up to 713 conditions per place. [2023-11-29 06:34:22,264 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 60 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2023-11-29 06:34:22,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 306 flow [2023-11-29 06:34:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:34:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:34:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 06:34:22,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2023-11-29 06:34:22,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 06:34:22,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 06:34:22,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:22,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 06:34:22,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:22,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:22,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:22,298 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 99 flow. Second operand 4 states and 134 transitions. [2023-11-29 06:34:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 306 flow [2023-11-29 06:34:22,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 79 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:34:22,309 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 130 flow [2023-11-29 06:34:22,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-11-29 06:34:22,317 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-11-29 06:34:22,317 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 130 flow [2023-11-29 06:34:22,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:22,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:22,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:34:22,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:22,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1966700875, now seen corresponding path program 1 times [2023-11-29 06:34:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855861809] [2023-11-29 06:34:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:22,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:22,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855861809] [2023-11-29 06:34:22,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855861809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:22,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:22,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:34:22,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850543980] [2023-11-29 06:34:22,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:22,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:34:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:34:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:34:22,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:34:22,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:22,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:22,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:34:22,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:23,171 INFO L124 PetriNetUnfolderBase]: 1218/2479 cut-off events. [2023-11-29 06:34:23,172 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2023-11-29 06:34:23,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 2479 events. 1218/2479 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14509 event pairs, 633 based on Foata normal form. 78/2389 useless extension candidates. Maximal degree in co-relation 4279. Up to 1345 conditions per place. [2023-11-29 06:34:23,202 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 74 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-29 06:34:23,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 411 flow [2023-11-29 06:34:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:34:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:34:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 06:34:23,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6887755102040817 [2023-11-29 06:34:23,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 06:34:23,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 06:34:23,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:23,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 06:34:23,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:23,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:23,211 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:23,212 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 130 flow. Second operand 4 states and 135 transitions. [2023-11-29 06:34:23,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 411 flow [2023-11-29 06:34:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 411 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:34:23,218 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 154 flow [2023-11-29 06:34:23,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-11-29 06:34:23,220 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2023-11-29 06:34:23,220 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 154 flow [2023-11-29 06:34:23,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:23,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:23,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:23,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:34:23,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:23,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash 698259068, now seen corresponding path program 1 times [2023-11-29 06:34:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789349509] [2023-11-29 06:34:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:23,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:23,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789349509] [2023-11-29 06:34:23,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789349509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:23,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:23,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:34:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979250021] [2023-11-29 06:34:23,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:34:23,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:23,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:34:23,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:34:23,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:34:23,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:23,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:23,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:34:23,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:23,966 INFO L124 PetriNetUnfolderBase]: 1738/3382 cut-off events. [2023-11-29 06:34:23,966 INFO L125 PetriNetUnfolderBase]: For 1026/1068 co-relation queries the response was YES. [2023-11-29 06:34:23,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7505 conditions, 3382 events. 1738/3382 cut-off events. For 1026/1068 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21677 event pairs, 849 based on Foata normal form. 82/3336 useless extension candidates. Maximal degree in co-relation 5351. Up to 2002 conditions per place. [2023-11-29 06:34:23,998 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 73 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-11-29 06:34:23,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 443 flow [2023-11-29 06:34:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:34:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:34:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 06:34:24,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2023-11-29 06:34:24,002 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 06:34:24,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 06:34:24,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:24,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 06:34:24,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,006 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,007 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 154 flow. Second operand 4 states and 134 transitions. [2023-11-29 06:34:24,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 443 flow [2023-11-29 06:34:24,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:34:24,014 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 176 flow [2023-11-29 06:34:24,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-29 06:34:24,016 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2023-11-29 06:34:24,016 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 176 flow [2023-11-29 06:34:24,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:24,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:24,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:34:24,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:24,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash 777193150, now seen corresponding path program 1 times [2023-11-29 06:34:24,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:24,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740109134] [2023-11-29 06:34:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:24,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:24,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740109134] [2023-11-29 06:34:24,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740109134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:24,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:24,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:34:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498159133] [2023-11-29 06:34:24,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:34:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:24,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:34:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:34:24,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 06:34:24,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:24,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 06:34:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:24,506 INFO L124 PetriNetUnfolderBase]: 929/2070 cut-off events. [2023-11-29 06:34:24,506 INFO L125 PetriNetUnfolderBase]: For 1004/1100 co-relation queries the response was YES. [2023-11-29 06:34:24,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2070 events. 929/2070 cut-off events. For 1004/1100 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12565 event pairs, 299 based on Foata normal form. 76/2092 useless extension candidates. Maximal degree in co-relation 3837. Up to 974 conditions per place. [2023-11-29 06:34:24,528 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2023-11-29 06:34:24,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 342 flow [2023-11-29 06:34:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:34:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:34:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2023-11-29 06:34:24,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 06:34:24,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 98 transitions. [2023-11-29 06:34:24,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 98 transitions. [2023-11-29 06:34:24,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:24,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 98 transitions. [2023-11-29 06:34:24,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,533 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 176 flow. Second operand 3 states and 98 transitions. [2023-11-29 06:34:24,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 342 flow [2023-11-29 06:34:24,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 336 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 06:34:24,542 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 175 flow [2023-11-29 06:34:24,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-29 06:34:24,544 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-11-29 06:34:24,544 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 175 flow [2023-11-29 06:34:24,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:24,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:24,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:34:24,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:24,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -321887152, now seen corresponding path program 1 times [2023-11-29 06:34:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161715177] [2023-11-29 06:34:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161715177] [2023-11-29 06:34:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161715177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808057004] [2023-11-29 06:34:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:24,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:24,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:24,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:24,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:34:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:24,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:34:24,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:24,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:34:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808057004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:24,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:34:24,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 06:34:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915148434] [2023-11-29 06:34:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:24,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:34:24,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:25,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:25,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:25,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:25,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:25,485 INFO L124 PetriNetUnfolderBase]: 957/2066 cut-off events. [2023-11-29 06:34:25,486 INFO L125 PetriNetUnfolderBase]: For 1045/1153 co-relation queries the response was YES. [2023-11-29 06:34:25,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 2066 events. 957/2066 cut-off events. For 1045/1153 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11904 event pairs, 195 based on Foata normal form. 74/2083 useless extension candidates. Maximal degree in co-relation 2769. Up to 762 conditions per place. [2023-11-29 06:34:25,504 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 89 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2023-11-29 06:34:25,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 595 flow [2023-11-29 06:34:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:34:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:34:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-29 06:34:25,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539358600583091 [2023-11-29 06:34:25,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-29 06:34:25,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-29 06:34:25,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:25,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-29 06:34:25,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:25,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:25,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:25,512 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 175 flow. Second operand 7 states and 190 transitions. [2023-11-29 06:34:25,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 595 flow [2023-11-29 06:34:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 111 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:34:25,517 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 231 flow [2023-11-29 06:34:25,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2023-11-29 06:34:25,518 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2023-11-29 06:34:25,519 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 231 flow [2023-11-29 06:34:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:25,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:25,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:25,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:34:25,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:25,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:25,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash 39884561, now seen corresponding path program 1 times [2023-11-29 06:34:25,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:25,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114543759] [2023-11-29 06:34:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:25,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:25,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:25,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114543759] [2023-11-29 06:34:25,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114543759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:25,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:25,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:34:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681779367] [2023-11-29 06:34:25,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:25,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:34:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:34:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:34:25,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:25,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:25,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:25,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:26,184 INFO L124 PetriNetUnfolderBase]: 1211/2691 cut-off events. [2023-11-29 06:34:26,184 INFO L125 PetriNetUnfolderBase]: For 2148/2268 co-relation queries the response was YES. [2023-11-29 06:34:26,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 2691 events. 1211/2691 cut-off events. For 2148/2268 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17215 event pairs, 667 based on Foata normal form. 28/2712 useless extension candidates. Maximal degree in co-relation 5411. Up to 1405 conditions per place. [2023-11-29 06:34:26,203 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 66 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-29 06:34:26,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 506 flow [2023-11-29 06:34:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:34:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:34:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 06:34:26,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2023-11-29 06:34:26,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 06:34:26,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 06:34:26,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:26,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 06:34:26,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:26,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:26,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:26,207 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 231 flow. Second operand 4 states and 118 transitions. [2023-11-29 06:34:26,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 506 flow [2023-11-29 06:34:26,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 498 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 06:34:26,214 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 273 flow [2023-11-29 06:34:26,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-11-29 06:34:26,215 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2023-11-29 06:34:26,215 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 273 flow [2023-11-29 06:34:26,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:26,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:26,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:26,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:34:26,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:26,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1388566629, now seen corresponding path program 1 times [2023-11-29 06:34:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:26,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081532630] [2023-11-29 06:34:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:26,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:26,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081532630] [2023-11-29 06:34:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081532630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284803348] [2023-11-29 06:34:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:26,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:26,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:34:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:26,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:34:26,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:26,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:26,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284803348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:26,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:26,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 06:34:26,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648837975] [2023-11-29 06:34:26,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:26,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:34:26,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:34:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:34:26,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:26,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 273 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:26,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:26,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:26,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:27,834 INFO L124 PetriNetUnfolderBase]: 2649/5694 cut-off events. [2023-11-29 06:34:27,834 INFO L125 PetriNetUnfolderBase]: For 7475/7907 co-relation queries the response was YES. [2023-11-29 06:34:27,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15442 conditions, 5694 events. 2649/5694 cut-off events. For 7475/7907 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 37384 event pairs, 437 based on Foata normal form. 152/5839 useless extension candidates. Maximal degree in co-relation 8271. Up to 1223 conditions per place. [2023-11-29 06:34:27,885 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 196 selfloop transitions, 33 changer transitions 0/241 dead transitions. [2023-11-29 06:34:27,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 241 transitions, 1538 flow [2023-11-29 06:34:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:34:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:34:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 431 transitions. [2023-11-29 06:34:27,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497448979591837 [2023-11-29 06:34:27,888 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 431 transitions. [2023-11-29 06:34:27,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 431 transitions. [2023-11-29 06:34:27,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:27,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 431 transitions. [2023-11-29 06:34:27,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 26.9375) internal successors, (431), 16 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:27,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:27,893 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:27,893 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 273 flow. Second operand 16 states and 431 transitions. [2023-11-29 06:34:27,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 241 transitions, 1538 flow [2023-11-29 06:34:27,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 241 transitions, 1526 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 06:34:27,908 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 600 flow [2023-11-29 06:34:27,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=600, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-11-29 06:34:27,909 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 41 predicate places. [2023-11-29 06:34:27,909 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 600 flow [2023-11-29 06:34:27,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:27,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:27,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:27,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:34:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:34:28,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:28,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1698853835, now seen corresponding path program 1 times [2023-11-29 06:34:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:28,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218199551] [2023-11-29 06:34:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:28,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:28,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218199551] [2023-11-29 06:34:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218199551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:28,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808924553] [2023-11-29 06:34:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:28,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:28,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:28,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:28,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:34:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:28,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:34:28,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:28,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:34:28,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808924553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:28,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:34:28,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:34:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574071100] [2023-11-29 06:34:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:28,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:28,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:28,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:34:28,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:34:28,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 600 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:28,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:28,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:34:28,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:29,560 INFO L124 PetriNetUnfolderBase]: 2830/6202 cut-off events. [2023-11-29 06:34:29,560 INFO L125 PetriNetUnfolderBase]: For 9886/10114 co-relation queries the response was YES. [2023-11-29 06:34:29,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17008 conditions, 6202 events. 2830/6202 cut-off events. For 9886/10114 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 42388 event pairs, 307 based on Foata normal form. 214/6201 useless extension candidates. Maximal degree in co-relation 14403. Up to 2177 conditions per place. [2023-11-29 06:34:29,592 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 199 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2023-11-29 06:34:29,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 227 transitions, 2067 flow [2023-11-29 06:34:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:34:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:34:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2023-11-29 06:34:29,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2023-11-29 06:34:29,593 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2023-11-29 06:34:29,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2023-11-29 06:34:29,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:29,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2023-11-29 06:34:29,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,596 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 600 flow. Second operand 6 states and 190 transitions. [2023-11-29 06:34:29,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 227 transitions, 2067 flow [2023-11-29 06:34:29,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 227 transitions, 1975 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-29 06:34:29,614 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 566 flow [2023-11-29 06:34:29,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-11-29 06:34:29,616 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2023-11-29 06:34:29,616 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 566 flow [2023-11-29 06:34:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:29,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:29,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:34:29,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:29,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:29,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash -145175232, now seen corresponding path program 1 times [2023-11-29 06:34:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472050156] [2023-11-29 06:34:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472050156] [2023-11-29 06:34:29,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472050156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:29,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:29,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:34:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416262214] [2023-11-29 06:34:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:34:29,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:34:29,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:29,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:34:29,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:30,719 INFO L124 PetriNetUnfolderBase]: 2921/6070 cut-off events. [2023-11-29 06:34:30,719 INFO L125 PetriNetUnfolderBase]: For 11752/12098 co-relation queries the response was YES. [2023-11-29 06:34:30,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18138 conditions, 6070 events. 2921/6070 cut-off events. For 11752/12098 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 39293 event pairs, 623 based on Foata normal form. 42/6111 useless extension candidates. Maximal degree in co-relation 15166. Up to 3577 conditions per place. [2023-11-29 06:34:30,749 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 122 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2023-11-29 06:34:30,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 145 transitions, 1127 flow [2023-11-29 06:34:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:34:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:34:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2023-11-29 06:34:30,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2023-11-29 06:34:30,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 166 transitions. [2023-11-29 06:34:30,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 166 transitions. [2023-11-29 06:34:30,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:30,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 166 transitions. [2023-11-29 06:34:30,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:30,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:30,754 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:30,754 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 566 flow. Second operand 6 states and 166 transitions. [2023-11-29 06:34:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 145 transitions, 1127 flow [2023-11-29 06:34:30,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 145 transitions, 1107 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:34:30,783 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 660 flow [2023-11-29 06:34:30,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2023-11-29 06:34:30,785 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-29 06:34:30,785 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 660 flow [2023-11-29 06:34:30,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:30,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:30,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:30,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:34:30,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:30,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1124861850, now seen corresponding path program 1 times [2023-11-29 06:34:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273585012] [2023-11-29 06:34:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:34:30,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:30,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273585012] [2023-11-29 06:34:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273585012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:30,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:30,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:34:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852315282] [2023-11-29 06:34:30,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:34:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:34:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:34:30,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:30,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 660 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:30,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:30,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:30,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:31,886 INFO L124 PetriNetUnfolderBase]: 3195/6759 cut-off events. [2023-11-29 06:34:31,886 INFO L125 PetriNetUnfolderBase]: For 12884/13022 co-relation queries the response was YES. [2023-11-29 06:34:31,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19607 conditions, 6759 events. 3195/6759 cut-off events. For 12884/13022 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 45429 event pairs, 595 based on Foata normal form. 226/6984 useless extension candidates. Maximal degree in co-relation 16644. Up to 2854 conditions per place. [2023-11-29 06:34:31,922 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 146 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2023-11-29 06:34:31,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 1632 flow [2023-11-29 06:34:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:34:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:34:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-29 06:34:31,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2023-11-29 06:34:31,923 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-29 06:34:31,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-29 06:34:31,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:31,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-29 06:34:31,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:31,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:31,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:31,925 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 660 flow. Second operand 4 states and 119 transitions. [2023-11-29 06:34:31,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 1632 flow [2023-11-29 06:34:31,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 175 transitions, 1618 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 06:34:31,972 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 668 flow [2023-11-29 06:34:31,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=668, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2023-11-29 06:34:31,973 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-29 06:34:31,973 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 668 flow [2023-11-29 06:34:31,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:31,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:31,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:31,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:34:31,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:31,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -566321120, now seen corresponding path program 1 times [2023-11-29 06:34:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:31,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025567964] [2023-11-29 06:34:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:31,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:32,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:32,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025567964] [2023-11-29 06:34:32,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025567964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:32,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526311604] [2023-11-29 06:34:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:32,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:32,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:32,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:34:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:32,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:34:32,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:32,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:34:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526311604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:32,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:34:32,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:34:32,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664963964] [2023-11-29 06:34:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:34:32,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:34:32,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:32,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:32,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:34:32,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:33,033 INFO L124 PetriNetUnfolderBase]: 2914/6013 cut-off events. [2023-11-29 06:34:33,033 INFO L125 PetriNetUnfolderBase]: For 14292/14312 co-relation queries the response was YES. [2023-11-29 06:34:33,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18873 conditions, 6013 events. 2914/6013 cut-off events. For 14292/14312 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 39070 event pairs, 237 based on Foata normal form. 178/6013 useless extension candidates. Maximal degree in co-relation 18052. Up to 3601 conditions per place. [2023-11-29 06:34:33,060 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 131 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2023-11-29 06:34:33,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 159 transitions, 1368 flow [2023-11-29 06:34:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:34:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:34:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-29 06:34:33,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2023-11-29 06:34:33,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-29 06:34:33,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-29 06:34:33,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:33,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-29 06:34:33,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:33,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:33,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:33,064 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 668 flow. Second operand 6 states and 182 transitions. [2023-11-29 06:34:33,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 159 transitions, 1368 flow [2023-11-29 06:34:33,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:34:33,096 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 666 flow [2023-11-29 06:34:33,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=666, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-29 06:34:33,097 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 49 predicate places. [2023-11-29 06:34:33,097 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 666 flow [2023-11-29 06:34:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:33,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:33,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 06:34:33,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:34:33,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:33,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:33,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash -376085039, now seen corresponding path program 1 times [2023-11-29 06:34:33,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:33,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169467096] [2023-11-29 06:34:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:34:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169467096] [2023-11-29 06:34:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169467096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:33,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:33,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:34:33,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380817500] [2023-11-29 06:34:33,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:33,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:34:33,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:33,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:34:33,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:34:33,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:33,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 666 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:33,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:33,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:33,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:34,160 INFO L124 PetriNetUnfolderBase]: 3039/6081 cut-off events. [2023-11-29 06:34:34,161 INFO L125 PetriNetUnfolderBase]: For 13462/13492 co-relation queries the response was YES. [2023-11-29 06:34:34,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19135 conditions, 6081 events. 3039/6081 cut-off events. For 13462/13492 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 38540 event pairs, 665 based on Foata normal form. 178/6259 useless extension candidates. Maximal degree in co-relation 16314. Up to 2981 conditions per place. [2023-11-29 06:34:34,202 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 108 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2023-11-29 06:34:34,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 1222 flow [2023-11-29 06:34:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:34:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:34:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-29 06:34:34,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969387755102041 [2023-11-29 06:34:34,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-29 06:34:34,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-29 06:34:34,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:34,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-29 06:34:34,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:34,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:34,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:34,206 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 666 flow. Second operand 4 states and 117 transitions. [2023-11-29 06:34:34,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 1222 flow [2023-11-29 06:34:34,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 1213 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 06:34:34,248 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 673 flow [2023-11-29 06:34:34,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-11-29 06:34:34,249 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2023-11-29 06:34:34,250 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 673 flow [2023-11-29 06:34:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:34,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:34,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:34,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:34:34,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:34,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1651950214, now seen corresponding path program 1 times [2023-11-29 06:34:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778489495] [2023-11-29 06:34:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:34,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778489495] [2023-11-29 06:34:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778489495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:34,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:34:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094051784] [2023-11-29 06:34:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:34,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:34:34,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:34:34,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 673 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:34,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:34,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:34:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:35,100 INFO L124 PetriNetUnfolderBase]: 2991/6045 cut-off events. [2023-11-29 06:34:35,100 INFO L125 PetriNetUnfolderBase]: For 15779/15779 co-relation queries the response was YES. [2023-11-29 06:34:35,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19691 conditions, 6045 events. 2991/6045 cut-off events. For 15779/15779 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 38656 event pairs, 479 based on Foata normal form. 108/6152 useless extension candidates. Maximal degree in co-relation 16562. Up to 3210 conditions per place. [2023-11-29 06:34:35,128 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 88 selfloop transitions, 35 changer transitions 0/132 dead transitions. [2023-11-29 06:34:35,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 1123 flow [2023-11-29 06:34:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:34:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:34:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2023-11-29 06:34:35,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104956268221577 [2023-11-29 06:34:35,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 165 transitions. [2023-11-29 06:34:35,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 165 transitions. [2023-11-29 06:34:35,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:35,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 165 transitions. [2023-11-29 06:34:35,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,132 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 673 flow. Second operand 7 states and 165 transitions. [2023-11-29 06:34:35,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 1123 flow [2023-11-29 06:34:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 1099 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 06:34:35,174 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 756 flow [2023-11-29 06:34:35,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2023-11-29 06:34:35,175 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 49 predicate places. [2023-11-29 06:34:35,176 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 756 flow [2023-11-29 06:34:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:35,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:35,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:34:35,176 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:35,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1642745471, now seen corresponding path program 1 times [2023-11-29 06:34:35,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:35,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877402039] [2023-11-29 06:34:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:35,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877402039] [2023-11-29 06:34:35,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877402039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083368035] [2023-11-29 06:34:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:35,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:35,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:35,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:34:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:35,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:34:35,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:35,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:34:35,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083368035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:35,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:34:35,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-29 06:34:35,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585448012] [2023-11-29 06:34:35,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:35,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:34:35,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:34:35,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:34:35,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:34:35,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:35,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:34:35,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:36,449 INFO L124 PetriNetUnfolderBase]: 2947/6011 cut-off events. [2023-11-29 06:34:36,449 INFO L125 PetriNetUnfolderBase]: For 19163/19163 co-relation queries the response was YES. [2023-11-29 06:34:36,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20061 conditions, 6011 events. 2947/6011 cut-off events. For 19163/19163 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 38796 event pairs, 681 based on Foata normal form. 124/6134 useless extension candidates. Maximal degree in co-relation 17211. Up to 2982 conditions per place. [2023-11-29 06:34:36,473 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 87 selfloop transitions, 28 changer transitions 12/136 dead transitions. [2023-11-29 06:34:36,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1263 flow [2023-11-29 06:34:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:34:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:34:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2023-11-29 06:34:36,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839650145772595 [2023-11-29 06:34:36,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 166 transitions. [2023-11-29 06:34:36,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 166 transitions. [2023-11-29 06:34:36,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:36,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 166 transitions. [2023-11-29 06:34:36,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:36,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:36,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:36,477 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 756 flow. Second operand 7 states and 166 transitions. [2023-11-29 06:34:36,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1263 flow [2023-11-29 06:34:36,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 1244 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 06:34:36,501 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 876 flow [2023-11-29 06:34:36,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=876, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-11-29 06:34:36,501 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2023-11-29 06:34:36,501 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 876 flow [2023-11-29 06:34:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:36,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:36,502 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:36,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:34:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:34:36,702 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:36,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 195302763, now seen corresponding path program 2 times [2023-11-29 06:34:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563453718] [2023-11-29 06:34:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:34:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563453718] [2023-11-29 06:34:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563453718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:36,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959742507] [2023-11-29 06:34:36,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:34:36,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:36,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:34:37,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:34:37,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:37,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:34:37,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:34:37,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:34:37,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959742507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:37,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:37,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-11-29 06:34:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407217647] [2023-11-29 06:34:37,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:37,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:34:37,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:34:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:34:37,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:34:37,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 876 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:37,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:37,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:34:37,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:38,205 INFO L124 PetriNetUnfolderBase]: 3024/6202 cut-off events. [2023-11-29 06:34:38,205 INFO L125 PetriNetUnfolderBase]: For 25402/25402 co-relation queries the response was YES. [2023-11-29 06:34:38,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21462 conditions, 6202 events. 3024/6202 cut-off events. For 25402/25402 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 39364 event pairs, 483 based on Foata normal form. 68/6269 useless extension candidates. Maximal degree in co-relation 18992. Up to 1421 conditions per place. [2023-11-29 06:34:38,237 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2023-11-29 06:34:38,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 246 transitions, 2291 flow [2023-11-29 06:34:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:34:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:34:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2023-11-29 06:34:38,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884353741496599 [2023-11-29 06:34:38,240 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 359 transitions. [2023-11-29 06:34:38,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 359 transitions. [2023-11-29 06:34:38,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:38,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 359 transitions. [2023-11-29 06:34:38,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.933333333333334) internal successors, (359), 15 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:38,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:38,244 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:38,244 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 876 flow. Second operand 15 states and 359 transitions. [2023-11-29 06:34:38,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 246 transitions, 2291 flow [2023-11-29 06:34:38,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 246 transitions, 2254 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-29 06:34:38,324 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1342 flow [2023-11-29 06:34:38,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-11-29 06:34:38,325 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2023-11-29 06:34:38,325 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1342 flow [2023-11-29 06:34:38,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:38,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:38,325 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-11-29 06:34:38,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:34:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:38,526 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:38,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 380481271, now seen corresponding path program 2 times [2023-11-29 06:34:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340746429] [2023-11-29 06:34:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340746429] [2023-11-29 06:34:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340746429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706155319] [2023-11-29 06:34:38,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:34:38,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:38,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:38,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:34:38,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:34:38,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:38,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:34:38,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:39,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706155319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:39,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 06:34:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359230340] [2023-11-29 06:34:39,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:39,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 06:34:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 06:34:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:34:39,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:39,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1342 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:39,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:39,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:39,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:41,256 INFO L124 PetriNetUnfolderBase]: 5288/10874 cut-off events. [2023-11-29 06:34:41,256 INFO L125 PetriNetUnfolderBase]: For 56351/56351 co-relation queries the response was YES. [2023-11-29 06:34:41,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38290 conditions, 10874 events. 5288/10874 cut-off events. For 56351/56351 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 67793 event pairs, 1005 based on Foata normal form. 234/11107 useless extension candidates. Maximal degree in co-relation 30706. Up to 2603 conditions per place. [2023-11-29 06:34:41,324 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2023-11-29 06:34:41,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 442 transitions, 4309 flow [2023-11-29 06:34:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:34:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 06:34:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2023-11-29 06:34:41,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722789115646258 [2023-11-29 06:34:41,328 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 673 transitions. [2023-11-29 06:34:41,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 673 transitions. [2023-11-29 06:34:41,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:41,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 673 transitions. [2023-11-29 06:34:41,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 28.041666666666668) internal successors, (673), 24 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:41,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 49.0) internal successors, (1225), 25 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:41,334 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 49.0) internal successors, (1225), 25 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:41,334 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1342 flow. Second operand 24 states and 673 transitions. [2023-11-29 06:34:41,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 442 transitions, 4309 flow [2023-11-29 06:34:41,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 442 transitions, 4285 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-29 06:34:41,412 INFO L231 Difference]: Finished difference. Result has 143 places, 148 transitions, 2173 flow [2023-11-29 06:34:41,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2173, PETRI_PLACES=143, PETRI_TRANSITIONS=148} [2023-11-29 06:34:41,412 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 96 predicate places. [2023-11-29 06:34:41,413 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 148 transitions, 2173 flow [2023-11-29 06:34:41,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:41,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:41,413 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:41,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 06:34:41,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:34:41,614 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:41,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash 422864839, now seen corresponding path program 3 times [2023-11-29 06:34:41,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:41,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343150016] [2023-11-29 06:34:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:41,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:34:41,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343150016] [2023-11-29 06:34:41,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343150016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037225018] [2023-11-29 06:34:41,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:34:41,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:41,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:41,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:41,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:34:42,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 06:34:42,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:42,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:34:42,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:34:42,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:34:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037225018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:42,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:34:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479672664] [2023-11-29 06:34:42,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:42,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 06:34:42,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 06:34:42,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-29 06:34:42,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:34:42,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 148 transitions, 2173 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:42,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:42,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:34:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:45,347 INFO L124 PetriNetUnfolderBase]: 7243/14781 cut-off events. [2023-11-29 06:34:45,347 INFO L125 PetriNetUnfolderBase]: For 91527/91527 co-relation queries the response was YES. [2023-11-29 06:34:45,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53875 conditions, 14781 events. 7243/14781 cut-off events. For 91527/91527 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98197 event pairs, 767 based on Foata normal form. 108/14888 useless extension candidates. Maximal degree in co-relation 50984. Up to 2506 conditions per place. [2023-11-29 06:34:45,539 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2023-11-29 06:34:45,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 457 transitions, 5178 flow [2023-11-29 06:34:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:34:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 06:34:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2023-11-29 06:34:45,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48744113029827313 [2023-11-29 06:34:45,543 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 621 transitions. [2023-11-29 06:34:45,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 621 transitions. [2023-11-29 06:34:45,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:45,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 621 transitions. [2023-11-29 06:34:45,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 23.884615384615383) internal successors, (621), 26 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:45,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 49.0) internal successors, (1323), 27 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:45,549 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 49.0) internal successors, (1323), 27 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:45,549 INFO L175 Difference]: Start difference. First operand has 143 places, 148 transitions, 2173 flow. Second operand 26 states and 621 transitions. [2023-11-29 06:34:45,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 457 transitions, 5178 flow [2023-11-29 06:34:45,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 457 transitions, 5058 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-11-29 06:34:45,797 INFO L231 Difference]: Finished difference. Result has 171 places, 204 transitions, 3435 flow [2023-11-29 06:34:45,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3435, PETRI_PLACES=171, PETRI_TRANSITIONS=204} [2023-11-29 06:34:45,798 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 124 predicate places. [2023-11-29 06:34:45,798 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 204 transitions, 3435 flow [2023-11-29 06:34:45,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:45,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:45,799 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:45,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:34:45,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:34:46,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:34:46,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 362849661, now seen corresponding path program 4 times [2023-11-29 06:34:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91689144] [2023-11-29 06:34:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:34:46,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91689144] [2023-11-29 06:34:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91689144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:46,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254262452] [2023-11-29 06:34:46,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:34:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:46,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:46,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:34:46,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:34:46,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:46,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:34:46,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:34:47,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:34:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254262452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:47,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:34:47,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 26 [2023-11-29 06:34:47,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999884780] [2023-11-29 06:34:47,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:47,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:34:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:34:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:34:47,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:34:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 204 transitions, 3435 flow. Second operand has 13 states, 13 states have (on average 20.153846153846153) internal successors, (262), 13 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:34:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:51,435 INFO L124 PetriNetUnfolderBase]: 7439/14824 cut-off events. [2023-11-29 06:34:51,435 INFO L125 PetriNetUnfolderBase]: For 82445/82473 co-relation queries the response was YES. [2023-11-29 06:34:51,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53585 conditions, 14824 events. 7439/14824 cut-off events. For 82445/82473 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 108320 event pairs, 9 based on Foata normal form. 382/15202 useless extension candidates. Maximal degree in co-relation 53536. Up to 3994 conditions per place. [2023-11-29 06:34:51,520 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 0 selfloop transitions, 0 changer transitions 538/538 dead transitions. [2023-11-29 06:34:51,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 538 transitions, 8076 flow [2023-11-29 06:34:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:34:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:34:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 398 transitions. [2023-11-29 06:34:51,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6248037676609105 [2023-11-29 06:34:51,522 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 398 transitions. [2023-11-29 06:34:51,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 398 transitions. [2023-11-29 06:34:51,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:51,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 398 transitions. [2023-11-29 06:34:51,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 30.615384615384617) internal successors, (398), 13 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:51,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 49.0) internal successors, (686), 14 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:51,525 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 49.0) internal successors, (686), 14 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:51,525 INFO L175 Difference]: Start difference. First operand has 171 places, 204 transitions, 3435 flow. Second operand 13 states and 398 transitions. [2023-11-29 06:34:51,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 538 transitions, 8076 flow [2023-11-29 06:34:51,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 538 transitions, 6981 flow, removed 98 selfloop flow, removed 28 redundant places. [2023-11-29 06:34:51,662 INFO L231 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2023-11-29 06:34:51,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2023-11-29 06:34:51,663 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 98 predicate places. [2023-11-29 06:34:51,663 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2023-11-29 06:34:51,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.153846153846153) internal successors, (262), 13 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:51,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-29 06:34:51,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-29 06:34:51,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-29 06:34:51,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:34:51,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:34:51,868 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:51,874 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 06:34:51,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:34:51,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:34:51 BasicIcfg [2023-11-29 06:34:51,878 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:34:51,879 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:34:51,879 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:34:51,879 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:34:51,879 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:20" (3/4) ... [2023-11-29 06:34:51,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:34:51,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-29 06:34:51,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-29 06:34:51,888 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-11-29 06:34:51,888 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 06:34:51,889 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 06:34:51,889 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 06:34:51,967 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:34:51,968 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:34:51,968 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:34:51,969 INFO L158 Benchmark]: Toolchain (without parser) took 33001.98ms. Allocated memory was 144.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 106.3MB in the beginning and 1.1GB in the end (delta: -994.0MB). Peak memory consumption was 408.5MB. Max. memory is 16.1GB. [2023-11-29 06:34:51,969 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory was 77.8MB in the beginning and 77.7MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:34:51,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 880.98ms. Allocated memory is still 144.7MB. Free memory was 106.3MB in the beginning and 76.3MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-29 06:34:51,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.41ms. Allocated memory is still 144.7MB. Free memory was 76.3MB in the beginning and 73.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:34:51,971 INFO L158 Benchmark]: Boogie Preprocessor took 82.58ms. Allocated memory is still 144.7MB. Free memory was 73.7MB in the beginning and 70.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:34:51,971 INFO L158 Benchmark]: RCFGBuilder took 899.83ms. Allocated memory is still 144.7MB. Free memory was 70.6MB in the beginning and 86.8MB in the end (delta: -16.1MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2023-11-29 06:34:51,972 INFO L158 Benchmark]: TraceAbstraction took 30959.04ms. Allocated memory was 144.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 86.0MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-29 06:34:51,972 INFO L158 Benchmark]: Witness Printer took 89.36ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:34:51,975 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory was 77.8MB in the beginning and 77.7MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 880.98ms. Allocated memory is still 144.7MB. Free memory was 106.3MB in the beginning and 76.3MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.41ms. Allocated memory is still 144.7MB. Free memory was 76.3MB in the beginning and 73.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.58ms. Allocated memory is still 144.7MB. Free memory was 73.7MB in the beginning and 70.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 899.83ms. Allocated memory is still 144.7MB. Free memory was 70.6MB in the beginning and 86.8MB in the end (delta: -16.1MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * TraceAbstraction took 30959.04ms. Allocated memory was 144.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 86.0MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 89.36ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.8s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1912 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1832 mSDsluCounter, 339 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 287 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4725 IncrementalHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 52 mSDtfsCounter, 4725 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 702 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3435occurred in iteration=17, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 895 NumberOfCodeBlocks, 895 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1045 ConstructedInterpolants, 0 QuantifiedInterpolants, 2901 SizeOfPredicates, 30 NumberOfNonLiveVariables, 2741 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 31 InterpolantComputations, 14 PerfectInterpolantSequences, 324/1109 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 06:34:51,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec303d6-cd47-4afd-8c71-270fe7e62a3e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE