./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --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_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:18,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:18,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:50:18,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:18,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:18,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:18,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:18,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:18,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:18,274 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:18,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:18,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:18,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:18,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:18,280 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:18,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:18,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:18,282 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:18,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:18,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:18,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:18,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:18,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:18,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:18,286 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:50:18,287 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:18,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:18,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:18,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:18,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:18,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:18,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:18,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:18,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:18,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:18,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:18,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:50:18,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:18,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:18,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:18,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:18,296 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:50:18,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:18,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:18,298 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_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-26 11:50:18,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:18,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:18,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:18,654 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:18,654 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:18,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-26 11:50:21,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:22,276 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:22,277 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-26 11:50:22,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/data/00774e077/120069a963cc487db42dd30383feb3e1/FLAG7c62a48dd [2023-11-26 11:50:22,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/data/00774e077/120069a963cc487db42dd30383feb3e1 [2023-11-26 11:50:22,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:22,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:22,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:22,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:22,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:22,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f32b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22, skipping insertion in model container [2023-11-26 11:50:22,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:22,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:22,670 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:22,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:22,726 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:22,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22 WrapperNode [2023-11-26 11:50:22,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:22,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:22,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:22,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:22,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,793 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 347 [2023-11-26 11:50:22,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:22,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:22,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:22,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:22,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,837 INFO L175 MemorySlicer]: Split 22 memory accesses to 5 slices as follows [2, 2, 2, 10, 6]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 2, 2]. [2023-11-26 11:50:22,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:22,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:22,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:22,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:22,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:22,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:22,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:22,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:50:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:50:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:50:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:50:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:50:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:50:22,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:50:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:50:22,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:50:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:50:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:50:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:50:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:50:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:50:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:50:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:50:22,970 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:50:23,118 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:23,120 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:23,938 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:24,482 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:24,482 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:50:24,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:24 BoogieIcfgContainer [2023-11-26 11:50:24,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:24,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:24,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:24,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:24,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:22" (1/3) ... [2023-11-26 11:50:24,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf7ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:24, skipping insertion in model container [2023-11-26 11:50:24,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22" (2/3) ... [2023-11-26 11:50:24,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf7ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:24, skipping insertion in model container [2023-11-26 11:50:24,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:24" (3/3) ... [2023-11-26 11:50:24,496 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-26 11:50:24,508 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:50:24,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:24,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-26 11:50:24,520 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:50:24,613 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:50:24,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 99 transitions, 212 flow [2023-11-26 11:50:24,720 INFO L124 PetriNetUnfolderBase]: 10/97 cut-off events. [2023-11-26 11:50:24,720 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:50:24,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 10/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-26 11:50:24,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 99 transitions, 212 flow [2023-11-26 11:50:24,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 96 transitions, 204 flow [2023-11-26 11:50:24,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:24,756 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;@51dee12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:24,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-26 11:50:24,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:50:24,759 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-26 11:50:24,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:24,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:24,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:50:24,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:24,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash 33389, now seen corresponding path program 1 times [2023-11-26 11:50:24,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:24,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139046357] [2023-11-26 11:50:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:24,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139046357] [2023-11-26 11:50:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139046357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:24,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:24,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:24,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954792328] [2023-11-26 11:50:24,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:25,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:25,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:25,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:25,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:25,375 INFO L124 PetriNetUnfolderBase]: 296/752 cut-off events. [2023-11-26 11:50:25,375 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 11:50:25,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 752 events. 296/752 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4487 event pairs, 184 based on Foata normal form. 4/594 useless extension candidates. Maximal degree in co-relation 1096. Up to 470 conditions per place. [2023-11-26 11:50:25,386 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 42 selfloop transitions, 1 changer transitions 3/92 dead transitions. [2023-11-26 11:50:25,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 284 flow [2023-11-26 11:50:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-11-26 11:50:25,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:50:25,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-11-26 11:50:25,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-11-26 11:50:25,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:25,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-11-26 11:50:25,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,421 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 204 flow. Second operand 3 states and 198 transitions. [2023-11-26 11:50:25,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 284 flow [2023-11-26 11:50:25,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:50:25,432 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 183 flow [2023-11-26 11:50:25,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-11-26 11:50:25,439 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-26 11:50:25,440 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 183 flow [2023-11-26 11:50:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:25,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:50:25,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:50:25,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:25,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1036071, now seen corresponding path program 1 times [2023-11-26 11:50:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298915356] [2023-11-26 11:50:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:25,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298915356] [2023-11-26 11:50:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298915356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:25,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:25,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671681] [2023-11-26 11:50:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:25,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:25,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:25,748 INFO L124 PetriNetUnfolderBase]: 296/747 cut-off events. [2023-11-26 11:50:25,749 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:50:25,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 747 events. 296/747 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4454 event pairs, 184 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 1220. Up to 467 conditions per place. [2023-11-26 11:50:25,757 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 40 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-11-26 11:50:25,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 261 flow [2023-11-26 11:50:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-26 11:50:25,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-11-26 11:50:25,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-26 11:50:25,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-26 11:50:25,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:25,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-26 11:50:25,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,766 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 183 flow. Second operand 3 states and 193 transitions. [2023-11-26 11:50:25,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 261 flow [2023-11-26 11:50:25,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:25,770 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 180 flow [2023-11-26 11:50:25,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2023-11-26 11:50:25,772 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -10 predicate places. [2023-11-26 11:50:25,772 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 180 flow [2023-11-26 11:50:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:25,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:25,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:50:25,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:50:25,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:25,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash 995697060, now seen corresponding path program 1 times [2023-11-26 11:50:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:25,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045607040] [2023-11-26 11:50:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:25,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045607040] [2023-11-26 11:50:25,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045607040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:25,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:25,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:25,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475975124] [2023-11-26 11:50:25,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:25,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:26,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:26,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:26,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:26,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:26,298 INFO L124 PetriNetUnfolderBase]: 298/755 cut-off events. [2023-11-26 11:50:26,298 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:50:26,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 755 events. 298/755 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4497 event pairs, 184 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 1238. Up to 474 conditions per place. [2023-11-26 11:50:26,306 INFO L140 encePairwiseOnDemand]: 87/99 looper letters, 43 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-11-26 11:50:26,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 294 flow [2023-11-26 11:50:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-26 11:50:26,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-26 11:50:26,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-26 11:50:26,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-26 11:50:26,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:26,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-26 11:50:26,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,315 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 180 flow. Second operand 4 states and 255 transitions. [2023-11-26 11:50:26,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 294 flow [2023-11-26 11:50:26,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:26,319 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 237 flow [2023-11-26 11:50:26,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2023-11-26 11:50:26,320 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-26 11:50:26,321 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 237 flow [2023-11-26 11:50:26,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:26,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:50:26,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:50:26,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:26,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 995697071, now seen corresponding path program 1 times [2023-11-26 11:50:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385982966] [2023-11-26 11:50:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:26,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:26,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385982966] [2023-11-26 11:50:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385982966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442298925] [2023-11-26 11:50:26,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:26,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:26,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:26,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:26,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:26,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:26,602 INFO L124 PetriNetUnfolderBase]: 298/753 cut-off events. [2023-11-26 11:50:26,602 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 11:50:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 753 events. 298/753 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4502 event pairs, 184 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1258. Up to 475 conditions per place. [2023-11-26 11:50:26,611 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 48 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-11-26 11:50:26,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 331 flow [2023-11-26 11:50:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2023-11-26 11:50:26,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2023-11-26 11:50:26,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2023-11-26 11:50:26,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2023-11-26 11:50:26,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:26,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2023-11-26 11:50:26,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,619 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 237 flow. Second operand 3 states and 195 transitions. [2023-11-26 11:50:26,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 331 flow [2023-11-26 11:50:26,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:26,624 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 229 flow [2023-11-26 11:50:26,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2023-11-26 11:50:26,625 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-11-26 11:50:26,626 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 229 flow [2023-11-26 11:50:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:26,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:50:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:50:26,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:26,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 801839153, now seen corresponding path program 1 times [2023-11-26 11:50:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33248059] [2023-11-26 11:50:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:26,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33248059] [2023-11-26 11:50:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33248059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:26,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372062743] [2023-11-26 11:50:26,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:26,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:26,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:26,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:26,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:26,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:26,898 INFO L124 PetriNetUnfolderBase]: 298/751 cut-off events. [2023-11-26 11:50:26,898 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-26 11:50:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 751 events. 298/751 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4490 event pairs, 184 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 1250. Up to 473 conditions per place. [2023-11-26 11:50:26,907 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 46 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-11-26 11:50:26,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 319 flow [2023-11-26 11:50:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-26 11:50:26,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-11-26 11:50:26,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-26 11:50:26,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-26 11:50:26,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:26,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-26 11:50:26,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,913 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 229 flow. Second operand 3 states and 193 transitions. [2023-11-26 11:50:26,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 319 flow [2023-11-26 11:50:26,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:26,917 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 226 flow [2023-11-26 11:50:26,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-11-26 11:50:26,919 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -8 predicate places. [2023-11-26 11:50:26,919 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 226 flow [2023-11-26 11:50:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:26,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:26,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:50:26,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:26,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1767991904, now seen corresponding path program 1 times [2023-11-26 11:50:26,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:26,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198346891] [2023-11-26 11:50:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198346891] [2023-11-26 11:50:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198346891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032900391] [2023-11-26 11:50:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:27,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:27,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:27,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:27,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:50:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:27,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:27,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:27,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:27,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032900391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:27,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:27,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:50:27,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636643424] [2023-11-26 11:50:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:27,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:27,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:27,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:27,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:27,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:27,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:27,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:27,649 INFO L124 PetriNetUnfolderBase]: 298/749 cut-off events. [2023-11-26 11:50:27,650 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-26 11:50:27,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 749 events. 298/749 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4467 event pairs, 184 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 1248. Up to 464 conditions per place. [2023-11-26 11:50:27,658 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 35 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2023-11-26 11:50:27,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 316 flow [2023-11-26 11:50:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 351 transitions. [2023-11-26 11:50:27,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-11-26 11:50:27,661 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 351 transitions. [2023-11-26 11:50:27,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 351 transitions. [2023-11-26 11:50:27,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:27,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 351 transitions. [2023-11-26 11:50:27,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:27,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:27,666 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:27,667 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 226 flow. Second operand 6 states and 351 transitions. [2023-11-26 11:50:27,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 316 flow [2023-11-26 11:50:27,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:27,670 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 245 flow [2023-11-26 11:50:27,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-11-26 11:50:27,672 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-26 11:50:27,672 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 245 flow [2023-11-26 11:50:27,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:27,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:27,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:50:27,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:27,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:27,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:27,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824793, now seen corresponding path program 1 times [2023-11-26 11:50:27,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102280647] [2023-11-26 11:50:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:28,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:28,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102280647] [2023-11-26 11:50:28,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102280647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:28,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678834874] [2023-11-26 11:50:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:28,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:28,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:28,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:28,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:50:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:28,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:28,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:28,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678834874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:28,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 11:50:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735251540] [2023-11-26 11:50:28,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:28,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:50:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:50:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:28,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:28,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 245 flow. Second operand has 12 states, 12 states have (on average 51.166666666666664) internal successors, (614), 12 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:28,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:28,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:28,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:28,644 INFO L124 PetriNetUnfolderBase]: 304/773 cut-off events. [2023-11-26 11:50:28,644 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-26 11:50:28,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 773 events. 304/773 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4580 event pairs, 184 based on Foata normal form. 6/617 useless extension candidates. Maximal degree in co-relation 1340. Up to 478 conditions per place. [2023-11-26 11:50:28,651 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 41 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2023-11-26 11:50:28,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 487 flow [2023-11-26 11:50:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:50:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:50:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2023-11-26 11:50:28,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787878787878787 [2023-11-26 11:50:28,654 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 573 transitions. [2023-11-26 11:50:28,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 573 transitions. [2023-11-26 11:50:28,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:28,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 573 transitions. [2023-11-26 11:50:28,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:28,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:28,660 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:28,660 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 245 flow. Second operand 10 states and 573 transitions. [2023-11-26 11:50:28,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 487 flow [2023-11-26 11:50:28,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 427 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-26 11:50:28,665 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 381 flow [2023-11-26 11:50:28,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2023-11-26 11:50:28,666 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2023-11-26 11:50:28,666 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 381 flow [2023-11-26 11:50:28,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.166666666666664) internal successors, (614), 12 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:28,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:28,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:28,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:28,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:28,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2071642211, now seen corresponding path program 1 times [2023-11-26 11:50:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:28,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908099672] [2023-11-26 11:50:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908099672] [2023-11-26 11:50:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908099672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:28,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110317682] [2023-11-26 11:50:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:28,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:28,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:28,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:28,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:28,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:28,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:28,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:29,172 INFO L124 PetriNetUnfolderBase]: 306/781 cut-off events. [2023-11-26 11:50:29,172 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:50:29,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 781 events. 306/781 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4656 event pairs, 184 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 1366. Up to 498 conditions per place. [2023-11-26 11:50:29,178 INFO L140 encePairwiseOnDemand]: 87/99 looper letters, 67 selfloop transitions, 8 changer transitions 0/111 dead transitions. [2023-11-26 11:50:29,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 543 flow [2023-11-26 11:50:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-26 11:50:29,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-26 11:50:29,181 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-26 11:50:29,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-26 11:50:29,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:29,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-26 11:50:29,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,184 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,184 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 381 flow. Second operand 4 states and 255 transitions. [2023-11-26 11:50:29,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 543 flow [2023-11-26 11:50:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 521 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:29,190 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 417 flow [2023-11-26 11:50:29,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-11-26 11:50:29,191 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2023-11-26 11:50:29,191 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 417 flow [2023-11-26 11:50:29,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:29,192 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:50:29,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1909049025, now seen corresponding path program 1 times [2023-11-26 11:50:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717523695] [2023-11-26 11:50:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717523695] [2023-11-26 11:50:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717523695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:29,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:29,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179174480] [2023-11-26 11:50:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:29,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:29,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:29,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:29,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:29,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:29,495 INFO L124 PetriNetUnfolderBase]: 305/780 cut-off events. [2023-11-26 11:50:29,495 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-26 11:50:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 780 events. 305/780 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4625 event pairs, 184 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 1373. Up to 494 conditions per place. [2023-11-26 11:50:29,502 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 67 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-11-26 11:50:29,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 553 flow [2023-11-26 11:50:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-26 11:50:29,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-26 11:50:29,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-26 11:50:29,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-26 11:50:29,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:29,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-26 11:50:29,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,508 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,508 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 417 flow. Second operand 4 states and 244 transitions. [2023-11-26 11:50:29,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 553 flow [2023-11-26 11:50:29,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:29,513 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 413 flow [2023-11-26 11:50:29,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-26 11:50:29,514 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 7 predicate places. [2023-11-26 11:50:29,514 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 413 flow [2023-11-26 11:50:29,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:29,515 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:29,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:50:29,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:29,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1702784635, now seen corresponding path program 1 times [2023-11-26 11:50:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:29,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582780410] [2023-11-26 11:50:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582780410] [2023-11-26 11:50:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582780410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:29,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671300550] [2023-11-26 11:50:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:29,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:29,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:29,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:29,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:29,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:29,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:29,817 INFO L124 PetriNetUnfolderBase]: 304/779 cut-off events. [2023-11-26 11:50:29,818 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-26 11:50:29,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 779 events. 304/779 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4572 event pairs, 184 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 1368. Up to 493 conditions per place. [2023-11-26 11:50:29,824 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-11-26 11:50:29,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 109 transitions, 547 flow [2023-11-26 11:50:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-26 11:50:29,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-26 11:50:29,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-26 11:50:29,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-26 11:50:29,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:29,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-26 11:50:29,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,830 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 413 flow. Second operand 4 states and 244 transitions. [2023-11-26 11:50:29,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 109 transitions, 547 flow [2023-11-26 11:50:29,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:29,835 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 411 flow [2023-11-26 11:50:29,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2023-11-26 11:50:29,836 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 8 predicate places. [2023-11-26 11:50:29,836 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 411 flow [2023-11-26 11:50:29,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:29,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:29,837 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-11-26 11:50:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:50:29,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:29,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1291933213, now seen corresponding path program 2 times [2023-11-26 11:50:29,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:29,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462131206] [2023-11-26 11:50:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:29,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:30,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462131206] [2023-11-26 11:50:30,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462131206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:30,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376422504] [2023-11-26 11:50:30,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:30,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:30,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:30,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:50:30,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:50:30,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:30,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:30,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:50:30,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:50:30,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376422504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:30,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:30,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2023-11-26 11:50:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102557260] [2023-11-26 11:50:30,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:30,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:50:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:50:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:50:30,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:30,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 411 flow. Second operand has 14 states, 14 states have (on average 51.214285714285715) internal successors, (717), 14 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:30,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:30,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:30,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:30,851 INFO L124 PetriNetUnfolderBase]: 306/785 cut-off events. [2023-11-26 11:50:30,851 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-26 11:50:30,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 785 events. 306/785 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4604 event pairs, 184 based on Foata normal form. 4/633 useless extension candidates. Maximal degree in co-relation 1385. Up to 476 conditions per place. [2023-11-26 11:50:30,859 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 39 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2023-11-26 11:50:30,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 579 flow [2023-11-26 11:50:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:50:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:50:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 773 transitions. [2023-11-26 11:50:30,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577200577200577 [2023-11-26 11:50:30,865 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 773 transitions. [2023-11-26 11:50:30,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 773 transitions. [2023-11-26 11:50:30,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:30,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 773 transitions. [2023-11-26 11:50:30,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 55.214285714285715) internal successors, (773), 14 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:30,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:30,873 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:30,873 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 411 flow. Second operand 14 states and 773 transitions. [2023-11-26 11:50:30,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 113 transitions, 579 flow [2023-11-26 11:50:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 551 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-26 11:50:30,879 INFO L231 Difference]: Finished difference. Result has 106 places, 113 transitions, 473 flow [2023-11-26 11:50:30,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=473, PETRI_PLACES=106, PETRI_TRANSITIONS=113} [2023-11-26 11:50:30,880 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 13 predicate places. [2023-11-26 11:50:30,880 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 113 transitions, 473 flow [2023-11-26 11:50:30,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 51.214285714285715) internal successors, (717), 14 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:30,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:30,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:30,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:50:31,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:31,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:31,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash -93957993, now seen corresponding path program 1 times [2023-11-26 11:50:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686280866] [2023-11-26 11:50:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:31,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686280866] [2023-11-26 11:50:31,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686280866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876932453] [2023-11-26 11:50:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:31,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:31,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:31,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:50:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:31,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:31,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:31,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876932453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:31,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:31,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:50:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072698835] [2023-11-26 11:50:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:31,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:31,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:31,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:31,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:31,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 113 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:31,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:31,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:31,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:31,848 INFO L124 PetriNetUnfolderBase]: 306/783 cut-off events. [2023-11-26 11:50:31,849 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-26 11:50:31,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 783 events. 306/783 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4603 event pairs, 184 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 1406. Up to 492 conditions per place. [2023-11-26 11:50:31,857 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 63 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-11-26 11:50:31,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 111 transitions, 619 flow [2023-11-26 11:50:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 351 transitions. [2023-11-26 11:50:31,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-11-26 11:50:31,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 351 transitions. [2023-11-26 11:50:31,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 351 transitions. [2023-11-26 11:50:31,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:31,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 351 transitions. [2023-11-26 11:50:31,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:31,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:31,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:31,866 INFO L175 Difference]: Start difference. First operand has 106 places, 113 transitions, 473 flow. Second operand 6 states and 351 transitions. [2023-11-26 11:50:31,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 111 transitions, 619 flow [2023-11-26 11:50:31,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 111 transitions, 483 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-11-26 11:50:31,872 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 357 flow [2023-11-26 11:50:31,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2023-11-26 11:50:31,874 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2023-11-26 11:50:31,874 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 357 flow [2023-11-26 11:50:31,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:31,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:31,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:31,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:32,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:32,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:32,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1382270535, now seen corresponding path program 1 times [2023-11-26 11:50:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147691929] [2023-11-26 11:50:32,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:32,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147691929] [2023-11-26 11:50:32,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147691929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337591590] [2023-11-26 11:50:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:32,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:32,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:50:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:32,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:32,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:32,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337591590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:32,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:32,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 11:50:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008445535] [2023-11-26 11:50:32,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:32,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:50:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:50:32,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:32,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:32,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 111 transitions, 357 flow. Second operand has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:32,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:32,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:32,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:32,940 INFO L124 PetriNetUnfolderBase]: 312/807 cut-off events. [2023-11-26 11:50:32,940 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-26 11:50:32,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 807 events. 312/807 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4806 event pairs, 184 based on Foata normal form. 6/645 useless extension candidates. Maximal degree in co-relation 1430. Up to 506 conditions per place. [2023-11-26 11:50:32,948 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 69 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2023-11-26 11:50:32,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 129 transitions, 655 flow [2023-11-26 11:50:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:50:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:50:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2023-11-26 11:50:32,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787878787878787 [2023-11-26 11:50:32,952 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 573 transitions. [2023-11-26 11:50:32,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 573 transitions. [2023-11-26 11:50:32,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:32,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 573 transitions. [2023-11-26 11:50:32,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:32,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:32,960 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:32,960 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 357 flow. Second operand 10 states and 573 transitions. [2023-11-26 11:50:32,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 129 transitions, 655 flow [2023-11-26 11:50:32,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 129 transitions, 595 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-26 11:50:32,966 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 493 flow [2023-11-26 11:50:32,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=493, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2023-11-26 11:50:32,967 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 12 predicate places. [2023-11-26 11:50:32,967 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 493 flow [2023-11-26 11:50:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:32,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:32,968 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, 1, 1, 1] [2023-11-26 11:50:32,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:33,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:33,176 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:33,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash 332964421, now seen corresponding path program 1 times [2023-11-26 11:50:33,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570536398] [2023-11-26 11:50:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:33,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570536398] [2023-11-26 11:50:33,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570536398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:33,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:33,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:33,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119919076] [2023-11-26 11:50:33,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:33,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:33,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:33,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-26 11:50:33,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:33,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:33,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-26 11:50:33,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:33,669 INFO L124 PetriNetUnfolderBase]: 571/1312 cut-off events. [2023-11-26 11:50:33,670 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-26 11:50:33,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 1312 events. 571/1312 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8472 event pairs, 169 based on Foata normal form. 40/1095 useless extension candidates. Maximal degree in co-relation 2356. Up to 489 conditions per place. [2023-11-26 11:50:33,683 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 121 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2023-11-26 11:50:33,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 801 flow [2023-11-26 11:50:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-26 11:50:33,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792929292929293 [2023-11-26 11:50:33,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-26 11:50:33,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-26 11:50:33,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:33,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-26 11:50:33,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:33,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:33,689 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:33,690 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 493 flow. Second operand 4 states and 269 transitions. [2023-11-26 11:50:33,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 801 flow [2023-11-26 11:50:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 779 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:33,697 INFO L231 Difference]: Finished difference. Result has 108 places, 131 transitions, 505 flow [2023-11-26 11:50:33,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=108, PETRI_TRANSITIONS=131} [2023-11-26 11:50:33,698 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 15 predicate places. [2023-11-26 11:50:33,698 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 131 transitions, 505 flow [2023-11-26 11:50:33,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:33,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:33,699 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, 1, 1, 1, 1] [2023-11-26 11:50:33,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:50:33,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:33,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1731963578, now seen corresponding path program 1 times [2023-11-26 11:50:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420328221] [2023-11-26 11:50:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:33,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:33,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420328221] [2023-11-26 11:50:33,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420328221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:33,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:33,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:33,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251005436] [2023-11-26 11:50:33,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:33,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:33,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:33,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 131 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:33,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:33,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:34,238 INFO L124 PetriNetUnfolderBase]: 381/1026 cut-off events. [2023-11-26 11:50:34,239 INFO L125 PetriNetUnfolderBase]: For 269/293 co-relation queries the response was YES. [2023-11-26 11:50:34,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 1026 events. 381/1026 cut-off events. For 269/293 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6690 event pairs, 236 based on Foata normal form. 14/856 useless extension candidates. Maximal degree in co-relation 1936. Up to 626 conditions per place. [2023-11-26 11:50:34,250 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 91 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-11-26 11:50:34,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 130 transitions, 689 flow [2023-11-26 11:50:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-26 11:50:34,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-26 11:50:34,253 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-26 11:50:34,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-26 11:50:34,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:34,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-26 11:50:34,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,258 INFO L175 Difference]: Start difference. First operand has 108 places, 131 transitions, 505 flow. Second operand 4 states and 244 transitions. [2023-11-26 11:50:34,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 130 transitions, 689 flow [2023-11-26 11:50:34,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 689 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:34,266 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 507 flow [2023-11-26 11:50:34,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=507, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-11-26 11:50:34,268 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 18 predicate places. [2023-11-26 11:50:34,269 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 507 flow [2023-11-26 11:50:34,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:34,270 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:50:34,270 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1182819580, now seen corresponding path program 1 times [2023-11-26 11:50:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412299687] [2023-11-26 11:50:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412299687] [2023-11-26 11:50:34,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412299687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:34,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:34,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288052288] [2023-11-26 11:50:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:34,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:34,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:34,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-26 11:50:34,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:34,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-26 11:50:34,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:34,896 INFO L124 PetriNetUnfolderBase]: 380/1025 cut-off events. [2023-11-26 11:50:34,896 INFO L125 PetriNetUnfolderBase]: For 273/297 co-relation queries the response was YES. [2023-11-26 11:50:34,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 1025 events. 380/1025 cut-off events. For 273/297 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6614 event pairs, 236 based on Foata normal form. 14/855 useless extension candidates. Maximal degree in co-relation 1935. Up to 625 conditions per place. [2023-11-26 11:50:34,907 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 90 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-26 11:50:34,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 129 transitions, 689 flow [2023-11-26 11:50:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-26 11:50:34,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-26 11:50:34,910 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-26 11:50:34,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-26 11:50:34,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:34,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-26 11:50:34,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,916 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 507 flow. Second operand 4 states and 244 transitions. [2023-11-26 11:50:34,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 129 transitions, 689 flow [2023-11-26 11:50:34,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 129 transitions, 685 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:34,923 INFO L231 Difference]: Finished difference. Result has 112 places, 129 transitions, 505 flow [2023-11-26 11:50:34,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=112, PETRI_TRANSITIONS=129} [2023-11-26 11:50:34,925 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 19 predicate places. [2023-11-26 11:50:34,925 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 129 transitions, 505 flow [2023-11-26 11:50:34,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:34,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:34,926 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:34,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:50:34,927 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:34,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash -558870575, now seen corresponding path program 2 times [2023-11-26 11:50:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943821717] [2023-11-26 11:50:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:50:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943821717] [2023-11-26 11:50:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943821717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147214204] [2023-11-26 11:50:35,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:35,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:35,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:35,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:35,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:50:35,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:50:35,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:35,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:35,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:50:35,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:50:35,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147214204] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:35,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2023-11-26 11:50:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798088712] [2023-11-26 11:50:35,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:50:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:50:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:35,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 99 [2023-11-26 11:50:35,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 129 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 44.416666666666664) internal successors, (533), 12 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:35,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:35,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 99 [2023-11-26 11:50:35,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:36,359 INFO L124 PetriNetUnfolderBase]: 750/2005 cut-off events. [2023-11-26 11:50:36,360 INFO L125 PetriNetUnfolderBase]: For 533/582 co-relation queries the response was YES. [2023-11-26 11:50:36,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 2005 events. 750/2005 cut-off events. For 533/582 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15345 event pairs, 472 based on Foata normal form. 31/1682 useless extension candidates. Maximal degree in co-relation 3746. Up to 600 conditions per place. [2023-11-26 11:50:36,383 INFO L140 encePairwiseOnDemand]: 81/99 looper letters, 89 selfloop transitions, 67 changer transitions 0/190 dead transitions. [2023-11-26 11:50:36,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 1055 flow [2023-11-26 11:50:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:50:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:50:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 717 transitions. [2023-11-26 11:50:36,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48282828282828283 [2023-11-26 11:50:36,387 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 717 transitions. [2023-11-26 11:50:36,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 717 transitions. [2023-11-26 11:50:36,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:36,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 717 transitions. [2023-11-26 11:50:36,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:36,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:36,394 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:36,394 INFO L175 Difference]: Start difference. First operand has 112 places, 129 transitions, 505 flow. Second operand 15 states and 717 transitions. [2023-11-26 11:50:36,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 1055 flow [2023-11-26 11:50:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 190 transitions, 1017 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 11:50:36,402 INFO L231 Difference]: Finished difference. Result has 120 places, 158 transitions, 803 flow [2023-11-26 11:50:36,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=803, PETRI_PLACES=120, PETRI_TRANSITIONS=158} [2023-11-26 11:50:36,403 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 27 predicate places. [2023-11-26 11:50:36,403 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 158 transitions, 803 flow [2023-11-26 11:50:36,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.416666666666664) internal successors, (533), 12 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:36,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:36,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:36,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:50:36,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:36,610 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:36,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1681370484, now seen corresponding path program 1 times [2023-11-26 11:50:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:36,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128904925] [2023-11-26 11:50:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128904925] [2023-11-26 11:50:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128904925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983893540] [2023-11-26 11:50:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:37,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:37,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:37,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:50:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:37,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 11:50:37,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:37,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 11:50:38,083 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-26 11:50:38,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-26 11:50:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:38,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:38,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-26 11:50:38,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-11-26 11:50:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983893540] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:38,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-26 11:50:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174309360] [2023-11-26 11:50:38,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:50:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:50:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:50:38,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-11-26 11:50:38,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 158 transitions, 803 flow. Second operand has 17 states, 17 states have (on average 46.05882352941177) internal successors, (783), 17 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:38,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:38,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-11-26 11:50:38,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:41,211 INFO L124 PetriNetUnfolderBase]: 2780/6941 cut-off events. [2023-11-26 11:50:41,211 INFO L125 PetriNetUnfolderBase]: For 1913/1957 co-relation queries the response was YES. [2023-11-26 11:50:41,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13464 conditions, 6941 events. 2780/6941 cut-off events. For 1913/1957 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 64650 event pairs, 778 based on Foata normal form. 44/5995 useless extension candidates. Maximal degree in co-relation 13448. Up to 922 conditions per place. [2023-11-26 11:50:41,290 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 291 selfloop transitions, 52 changer transitions 0/375 dead transitions. [2023-11-26 11:50:41,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 375 transitions, 2530 flow [2023-11-26 11:50:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:50:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:50:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 830 transitions. [2023-11-26 11:50:41,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589225589225589 [2023-11-26 11:50:41,298 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 830 transitions. [2023-11-26 11:50:41,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 830 transitions. [2023-11-26 11:50:41,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:41,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 830 transitions. [2023-11-26 11:50:41,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:41,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:41,309 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:41,309 INFO L175 Difference]: Start difference. First operand has 120 places, 158 transitions, 803 flow. Second operand 15 states and 830 transitions. [2023-11-26 11:50:41,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 375 transitions, 2530 flow [2023-11-26 11:50:41,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 375 transitions, 2527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:41,349 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 1018 flow [2023-11-26 11:50:41,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1018, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2023-11-26 11:50:41,351 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 42 predicate places. [2023-11-26 11:50:41,351 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 1018 flow [2023-11-26 11:50:41,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 46.05882352941177) internal successors, (783), 17 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:41,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:41,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:41,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:50:41,560 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:41,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash -582908105, now seen corresponding path program 1 times [2023-11-26 11:50:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740453204] [2023-11-26 11:50:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:42,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740453204] [2023-11-26 11:50:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740453204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:42,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234609935] [2023-11-26 11:50:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:42,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:42,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:42,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:50:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:42,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 11:50:42,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:42,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 11:50:43,093 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-26 11:50:43,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-26 11:50:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:43,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:43,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-26 11:50:43,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-11-26 11:50:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:50:43,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234609935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:43,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:43,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-26 11:50:43,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861034906] [2023-11-26 11:50:43,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:50:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:50:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:50:43,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-11-26 11:50:43,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 1018 flow. Second operand has 17 states, 17 states have (on average 44.1764705882353) internal successors, (751), 17 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:43,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:43,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-11-26 11:50:43,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:46,357 INFO L124 PetriNetUnfolderBase]: 3312/7493 cut-off events. [2023-11-26 11:50:46,358 INFO L125 PetriNetUnfolderBase]: For 4211/4255 co-relation queries the response was YES. [2023-11-26 11:50:46,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16077 conditions, 7493 events. 3312/7493 cut-off events. For 4211/4255 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 66201 event pairs, 960 based on Foata normal form. 124/6627 useless extension candidates. Maximal degree in co-relation 16057. Up to 1212 conditions per place. [2023-11-26 11:50:46,434 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 296 selfloop transitions, 52 changer transitions 0/377 dead transitions. [2023-11-26 11:50:46,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 377 transitions, 2706 flow [2023-11-26 11:50:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:50:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:50:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2023-11-26 11:50:46,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538047138047138 [2023-11-26 11:50:46,439 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 799 transitions. [2023-11-26 11:50:46,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 799 transitions. [2023-11-26 11:50:46,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:46,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 799 transitions. [2023-11-26 11:50:46,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.266666666666666) internal successors, (799), 15 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,453 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,454 INFO L175 Difference]: Start difference. First operand has 135 places, 171 transitions, 1018 flow. Second operand 15 states and 799 transitions. [2023-11-26 11:50:46,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 377 transitions, 2706 flow [2023-11-26 11:50:46,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 377 transitions, 2687 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-26 11:50:46,508 INFO L231 Difference]: Finished difference. Result has 146 places, 174 transitions, 1150 flow [2023-11-26 11:50:46,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1150, PETRI_PLACES=146, PETRI_TRANSITIONS=174} [2023-11-26 11:50:46,509 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 53 predicate places. [2023-11-26 11:50:46,510 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 174 transitions, 1150 flow [2023-11-26 11:50:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 44.1764705882353) internal successors, (751), 17 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:46,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:46,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:46,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:46,721 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:46,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1921906050, now seen corresponding path program 1 times [2023-11-26 11:50:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441076587] [2023-11-26 11:50:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:50:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:46,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441076587] [2023-11-26 11:50:46,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441076587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:46,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:46,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571414360] [2023-11-26 11:50:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:46,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:46,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:46,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-26 11:50:46,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 174 transitions, 1150 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:46,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-26 11:50:46,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:48,579 INFO L124 PetriNetUnfolderBase]: 4520/10265 cut-off events. [2023-11-26 11:50:48,579 INFO L125 PetriNetUnfolderBase]: For 8807/8965 co-relation queries the response was YES. [2023-11-26 11:50:48,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22969 conditions, 10265 events. 4520/10265 cut-off events. For 8807/8965 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 97016 event pairs, 1550 based on Foata normal form. 438/9139 useless extension candidates. Maximal degree in co-relation 22947. Up to 3809 conditions per place. [2023-11-26 11:50:48,669 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 189 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2023-11-26 11:50:48,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 227 transitions, 1850 flow [2023-11-26 11:50:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-26 11:50:48,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792929292929293 [2023-11-26 11:50:48,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-26 11:50:48,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-26 11:50:48,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:48,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-26 11:50:48,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,675 INFO L175 Difference]: Start difference. First operand has 146 places, 174 transitions, 1150 flow. Second operand 4 states and 269 transitions. [2023-11-26 11:50:48,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 227 transitions, 1850 flow [2023-11-26 11:50:48,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 227 transitions, 1757 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-26 11:50:48,715 INFO L231 Difference]: Finished difference. Result has 141 places, 176 transitions, 1119 flow [2023-11-26 11:50:48,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1119, PETRI_PLACES=141, PETRI_TRANSITIONS=176} [2023-11-26 11:50:48,716 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 48 predicate places. [2023-11-26 11:50:48,716 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 176 transitions, 1119 flow [2023-11-26 11:50:48,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:48,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:48,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:50:48,718 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:48,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash -890280945, now seen corresponding path program 1 times [2023-11-26 11:50:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:48,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112311410] [2023-11-26 11:50:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:48,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:50:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112311410] [2023-11-26 11:50:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112311410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:48,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463281250] [2023-11-26 11:50:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:48,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:48,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-26 11:50:48,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 176 transitions, 1119 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:48,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-26 11:50:48,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:50,210 INFO L124 PetriNetUnfolderBase]: 3974/9723 cut-off events. [2023-11-26 11:50:50,211 INFO L125 PetriNetUnfolderBase]: For 8522/8742 co-relation queries the response was YES. [2023-11-26 11:50:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22261 conditions, 9723 events. 3974/9723 cut-off events. For 8522/8742 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 95038 event pairs, 1498 based on Foata normal form. 276/8973 useless extension candidates. Maximal degree in co-relation 22239. Up to 3637 conditions per place. [2023-11-26 11:50:50,311 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 162 selfloop transitions, 11 changer transitions 0/202 dead transitions. [2023-11-26 11:50:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 202 transitions, 1537 flow [2023-11-26 11:50:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-11-26 11:50:50,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6717171717171717 [2023-11-26 11:50:50,314 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-11-26 11:50:50,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-11-26 11:50:50,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:50,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-11-26 11:50:50,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,318 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,319 INFO L175 Difference]: Start difference. First operand has 141 places, 176 transitions, 1119 flow. Second operand 4 states and 266 transitions. [2023-11-26 11:50:50,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 202 transitions, 1537 flow [2023-11-26 11:50:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 202 transitions, 1530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:50,396 INFO L231 Difference]: Finished difference. Result has 143 places, 173 transitions, 1110 flow [2023-11-26 11:50:50,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1110, PETRI_PLACES=143, PETRI_TRANSITIONS=173} [2023-11-26 11:50:50,397 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 50 predicate places. [2023-11-26 11:50:50,397 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 173 transitions, 1110 flow [2023-11-26 11:50:50,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:50,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:50:50,399 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:50,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash -890281970, now seen corresponding path program 1 times [2023-11-26 11:50:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:50,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833186741] [2023-11-26 11:50:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833186741] [2023-11-26 11:50:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833186741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276640865] [2023-11-26 11:50:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:51,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:51,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:51,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:51,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:50:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-26 11:50:51,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:51,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:50:51,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:50:52,087 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-26 11:50:52,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-26 11:50:52,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-26 11:50:52,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-26 11:50:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:52,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:52,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:50:52,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-26 11:50:52,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:50:52,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2023-11-26 11:50:52,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-26 11:50:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276640865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:52,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-26 11:50:52,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529926281] [2023-11-26 11:50:52,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 11:50:52,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 11:50:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=353, Unknown=1, NotChecked=0, Total=420 [2023-11-26 11:50:52,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 99 [2023-11-26 11:50:52,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 173 transitions, 1110 flow. Second operand has 21 states, 21 states have (on average 33.80952380952381) internal successors, (710), 21 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:52,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 99 [2023-11-26 11:50:52,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:54,329 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (<= 0 c_~id_0~0) (< 0 (+ 2147483649 (select (select |c_#memory_int#3| c_~get_2~0.base) .cse0))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128| Int)) (or (forall ((v_ArrVal_502 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#3| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128| v_ArrVal_502) c_~get_2~0.base) .cse0)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128|) 0)))) (forall ((v_ArrVal_502 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_502) c_~get_2~0.base) .cse0)))))) is different from false [2023-11-26 11:50:58,222 INFO L124 PetriNetUnfolderBase]: 9105/17360 cut-off events. [2023-11-26 11:50:58,222 INFO L125 PetriNetUnfolderBase]: For 12323/12993 co-relation queries the response was YES. [2023-11-26 11:50:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43423 conditions, 17360 events. 9105/17360 cut-off events. For 12323/12993 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 152292 event pairs, 1921 based on Foata normal form. 362/16671 useless extension candidates. Maximal degree in co-relation 43401. Up to 2693 conditions per place. [2023-11-26 11:50:58,366 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 401 selfloop transitions, 100 changer transitions 0/520 dead transitions. [2023-11-26 11:50:58,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 520 transitions, 3634 flow [2023-11-26 11:50:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:50:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-26 11:50:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1296 transitions. [2023-11-26 11:50:58,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2023-11-26 11:50:58,382 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1296 transitions. [2023-11-26 11:50:58,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1296 transitions. [2023-11-26 11:50:58,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:58,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1296 transitions. [2023-11-26 11:50:58,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 41.806451612903224) internal successors, (1296), 31 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 99.0) internal successors, (3168), 32 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,406 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 99.0) internal successors, (3168), 32 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,406 INFO L175 Difference]: Start difference. First operand has 143 places, 173 transitions, 1110 flow. Second operand 31 states and 1296 transitions. [2023-11-26 11:50:58,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 520 transitions, 3634 flow [2023-11-26 11:50:58,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 520 transitions, 3586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:58,581 INFO L231 Difference]: Finished difference. Result has 180 places, 227 transitions, 1800 flow [2023-11-26 11:50:58,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1800, PETRI_PLACES=180, PETRI_TRANSITIONS=227} [2023-11-26 11:50:58,582 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 87 predicate places. [2023-11-26 11:50:58,583 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 227 transitions, 1800 flow [2023-11-26 11:50:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 33.80952380952381) internal successors, (710), 21 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:58,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:58,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 11:50:58,791 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:50:58,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -550453453, now seen corresponding path program 1 times [2023-11-26 11:50:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805989210] [2023-11-26 11:50:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:58,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805989210] [2023-11-26 11:50:59,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805989210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:59,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573050869] [2023-11-26 11:50:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:59,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:59,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:59,759 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:59,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:50:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-26 11:50:59,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:59,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:51:00,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:51:00,151 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-26 11:51:00,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-26 11:51:00,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 11:51:00,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:51:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:00,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:00,425 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_553 (Array Int Int))) (< (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_553) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 9223372039002259456)) is different from false [2023-11-26 11:51:00,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:51:00,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-26 11:51:00,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:51:00,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-26 11:51:00,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-26 11:51:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-11-26 11:51:00,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573050869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:00,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-26 11:51:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108198811] [2023-11-26 11:51:00,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:51:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:51:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=348, Unknown=1, NotChecked=38, Total=462 [2023-11-26 11:51:00,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 99 [2023-11-26 11:51:00,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 227 transitions, 1800 flow. Second operand has 22 states, 22 states have (on average 36.5) internal successors, (803), 22 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:00,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 99 [2023-11-26 11:51:00,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:06,271 INFO L124 PetriNetUnfolderBase]: 10154/19340 cut-off events. [2023-11-26 11:51:06,271 INFO L125 PetriNetUnfolderBase]: For 36078/36594 co-relation queries the response was YES. [2023-11-26 11:51:06,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53297 conditions, 19340 events. 10154/19340 cut-off events. For 36078/36594 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 171250 event pairs, 2277 based on Foata normal form. 173/18099 useless extension candidates. Maximal degree in co-relation 53265. Up to 3535 conditions per place. [2023-11-26 11:51:06,400 INFO L140 encePairwiseOnDemand]: 84/99 looper letters, 374 selfloop transitions, 71 changer transitions 0/472 dead transitions. [2023-11-26 11:51:06,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 472 transitions, 4097 flow [2023-11-26 11:51:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:51:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-26 11:51:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 964 transitions. [2023-11-26 11:51:06,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426078971533517 [2023-11-26 11:51:06,406 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 964 transitions. [2023-11-26 11:51:06,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 964 transitions. [2023-11-26 11:51:06,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:06,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 964 transitions. [2023-11-26 11:51:06,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,418 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,418 INFO L175 Difference]: Start difference. First operand has 180 places, 227 transitions, 1800 flow. Second operand 22 states and 964 transitions. [2023-11-26 11:51:06,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 472 transitions, 4097 flow [2023-11-26 11:51:06,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 472 transitions, 3985 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-26 11:51:06,600 INFO L231 Difference]: Finished difference. Result has 197 places, 240 transitions, 1966 flow [2023-11-26 11:51:06,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1966, PETRI_PLACES=197, PETRI_TRANSITIONS=240} [2023-11-26 11:51:06,601 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 104 predicate places. [2023-11-26 11:51:06,601 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 240 transitions, 1966 flow [2023-11-26 11:51:06,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 36.5) internal successors, (803), 22 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:06,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:06,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:06,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3945069-8058-472e-9bfb-f45bde8414b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 11:51:06,808 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-26 11:51:06,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1828936166, now seen corresponding path program 1 times [2023-11-26 11:51:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471739505] [2023-11-26 11:51:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:06,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat