./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX --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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:32:17,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:32:17,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:32:17,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:32:17,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:32:17,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:32:17,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:32:17,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:32:17,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:32:17,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:32:17,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:32:17,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:32:17,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:32:17,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:32:17,722 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:32:17,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:32:17,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:32:17,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:32:17,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:32:17,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:32:17,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:32:17,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:32:17,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:32:17,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:32:17,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:32:17,731 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:32:17,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:32:17,732 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:32:17,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:32:17,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:32:17,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:32:17,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:32:17,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:32:17,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:32:17,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:32:17,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:32:17,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:32:17,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:32:17,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:32:17,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:32:17,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:32:17,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:32:17,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:32:17,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:32:17,743 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_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2024-11-08 17:32:18,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:32:18,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:32:18,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:32:18,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:32:18,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:32:18,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c Unable to find full path for "g++" [2024-11-08 17:32:20,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:32:20,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:32:20,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2024-11-08 17:32:20,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/data/d490234ea/533f718c080f4c3cbb2568fc08382ca3/FLAGda01c7273 [2024-11-08 17:32:20,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/data/d490234ea/533f718c080f4c3cbb2568fc08382ca3 [2024-11-08 17:32:20,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:32:20,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:32:20,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:32:20,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:32:20,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:32:20,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:20,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478ba9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20, skipping insertion in model container [2024-11-08 17:32:20,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:20,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:32:20,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:32:20,889 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:32:20,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:32:20,937 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:32:20,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20 WrapperNode [2024-11-08 17:32:20,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:32:20,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:32:20,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:32:20,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:32:20,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:20,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:20,995 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 272 [2024-11-08 17:32:20,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:32:21,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:32:21,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:32:21,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:32:21,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,063 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-08 17:32:21,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:32:21,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:32:21,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:32:21,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:32:21,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (1/1) ... [2024-11-08 17:32:21,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:32:21,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:21,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:32:21,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:32:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:32:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:32:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:32:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:32:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:32:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:32:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:32:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:32:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:32:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:32:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:32:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:32:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:32:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:32:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:32:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:32:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:32:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:32:21,188 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:32:21,352 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:32:21,354 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:32:21,982 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:32:21,983 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:32:22,482 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:32:22,483 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:32:22,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:32:22 BoogieIcfgContainer [2024-11-08 17:32:22,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:32:22,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:32:22,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:32:22,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:32:22,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:32:20" (1/3) ... [2024-11-08 17:32:22,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2594ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:32:22, skipping insertion in model container [2024-11-08 17:32:22,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:20" (2/3) ... [2024-11-08 17:32:22,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2594ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:32:22, skipping insertion in model container [2024-11-08 17:32:22,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:32:22" (3/3) ... [2024-11-08 17:32:22,495 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-11-08 17:32:22,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:32:22,516 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-08 17:32:22,516 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:32:22,633 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:32:22,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 123 transitions, 267 flow [2024-11-08 17:32:22,759 INFO L124 PetriNetUnfolderBase]: 17/120 cut-off events. [2024-11-08 17:32:22,760 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:32:22,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 17/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 282 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-11-08 17:32:22,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 123 transitions, 267 flow [2024-11-08 17:32:22,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 119 transitions, 256 flow [2024-11-08 17:32:22,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:32:22,791 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@345b384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:32:22,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-08 17:32:22,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:32:22,796 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 17:32:22,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:32:22,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:22,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:32:22,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:22,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash 31205073, now seen corresponding path program 1 times [2024-11-08 17:32:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934811679] [2024-11-08 17:32:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:23,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:23,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934811679] [2024-11-08 17:32:23,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934811679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:23,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:23,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961772896] [2024-11-08 17:32:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:23,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:23,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:23,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 17:32:23,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 119 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:23,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:23,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 17:32:23,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:24,069 INFO L124 PetriNetUnfolderBase]: 1245/2616 cut-off events. [2024-11-08 17:32:24,070 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-11-08 17:32:24,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 2616 events. 1245/2616 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19424 event pairs, 826 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 3844. Up to 1545 conditions per place. [2024-11-08 17:32:24,106 INFO L140 encePairwiseOnDemand]: 105/123 looper letters, 52 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2024-11-08 17:32:24,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 126 transitions, 394 flow [2024-11-08 17:32:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-11-08 17:32:24,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-11-08 17:32:24,129 INFO L175 Difference]: Start difference. First operand has 112 places, 119 transitions, 256 flow. Second operand 4 states and 338 transitions. [2024-11-08 17:32:24,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 126 transitions, 394 flow [2024-11-08 17:32:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 126 transitions, 382 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:32:24,146 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 328 flow [2024-11-08 17:32:24,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2024-11-08 17:32:24,154 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -2 predicate places. [2024-11-08 17:32:24,155 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 328 flow [2024-11-08 17:32:24,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:24,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:24,156 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 17:32:24,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:32:24,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:24,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash -657430967, now seen corresponding path program 1 times [2024-11-08 17:32:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:24,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208645751] [2024-11-08 17:32:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:24,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208645751] [2024-11-08 17:32:24,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208645751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970343133] [2024-11-08 17:32:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:24,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:24,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:32:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:24,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:32:24,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:24,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970343133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:24,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:32:24,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 17:32:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233200944] [2024-11-08 17:32:24,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:24,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:32:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:32:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:32:24,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 17:32:24,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:24,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:24,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 17:32:24,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:25,315 INFO L124 PetriNetUnfolderBase]: 1245/2613 cut-off events. [2024-11-08 17:32:25,315 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-08 17:32:25,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 2613 events. 1245/2613 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19421 event pairs, 826 based on Foata normal form. 3/1946 useless extension candidates. Maximal degree in co-relation 4162. Up to 1530 conditions per place. [2024-11-08 17:32:25,338 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 42 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-11-08 17:32:25,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 123 transitions, 434 flow [2024-11-08 17:32:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:32:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:32:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 464 transitions. [2024-11-08 17:32:25,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6287262872628726 [2024-11-08 17:32:25,342 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 328 flow. Second operand 6 states and 464 transitions. [2024-11-08 17:32:25,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 123 transitions, 434 flow [2024-11-08 17:32:25,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 123 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:32:25,346 INFO L231 Difference]: Finished difference. Result has 112 places, 123 transitions, 350 flow [2024-11-08 17:32:25,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=112, PETRI_TRANSITIONS=123} [2024-11-08 17:32:25,347 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 0 predicate places. [2024-11-08 17:32:25,347 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 123 transitions, 350 flow [2024-11-08 17:32:25,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:25,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:25,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:25,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:32:25,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:25,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:25,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1036402347, now seen corresponding path program 1 times [2024-11-08 17:32:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:25,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507392377] [2024-11-08 17:32:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:25,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507392377] [2024-11-08 17:32:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507392377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:25,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345044144] [2024-11-08 17:32:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:25,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:25,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-11-08 17:32:25,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 123 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:25,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:25,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-11-08 17:32:25,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:26,215 INFO L124 PetriNetUnfolderBase]: 1246/2630 cut-off events. [2024-11-08 17:32:26,216 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-08 17:32:26,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 2630 events. 1246/2630 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19457 event pairs, 826 based on Foata normal form. 4/1963 useless extension candidates. Maximal degree in co-relation 4198. Up to 1545 conditions per place. [2024-11-08 17:32:26,235 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 63 selfloop transitions, 10 changer transitions 0/128 dead transitions. [2024-11-08 17:32:26,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 506 flow [2024-11-08 17:32:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2024-11-08 17:32:26,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382113821138211 [2024-11-08 17:32:26,240 INFO L175 Difference]: Start difference. First operand has 112 places, 123 transitions, 350 flow. Second operand 4 states and 314 transitions. [2024-11-08 17:32:26,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 506 flow [2024-11-08 17:32:26,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 128 transitions, 468 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-08 17:32:26,246 INFO L231 Difference]: Finished difference. Result has 111 places, 126 transitions, 376 flow [2024-11-08 17:32:26,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=111, PETRI_TRANSITIONS=126} [2024-11-08 17:32:26,248 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -1 predicate places. [2024-11-08 17:32:26,248 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 376 flow [2024-11-08 17:32:26,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:26,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:26,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 17:32:26,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:32:26,249 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:26,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1094477574, now seen corresponding path program 1 times [2024-11-08 17:32:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:26,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355038746] [2024-11-08 17:32:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:26,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355038746] [2024-11-08 17:32:26,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355038746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:26,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260952735] [2024-11-08 17:32:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:26,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:26,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:26,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:26,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:32:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:26,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:32:26,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:26,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:26,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260952735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:26,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 17:32:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933458492] [2024-11-08 17:32:26,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:26,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:32:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:32:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:32:26,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 17:32:26,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 68.08333333333333) internal successors, (817), 12 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:26,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:26,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 17:32:26,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:27,432 INFO L124 PetriNetUnfolderBase]: 1264/2693 cut-off events. [2024-11-08 17:32:27,432 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-08 17:32:27,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4428 conditions, 2693 events. 1264/2693 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19900 event pairs, 826 based on Foata normal form. 9/2028 useless extension candidates. Maximal degree in co-relation 4209. Up to 1550 conditions per place. [2024-11-08 17:32:27,452 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 52 selfloop transitions, 37 changer transitions 0/153 dead transitions. [2024-11-08 17:32:27,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 153 transitions, 695 flow [2024-11-08 17:32:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:32:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:32:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 765 transitions. [2024-11-08 17:32:27,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-08 17:32:27,455 INFO L175 Difference]: Start difference. First operand has 111 places, 126 transitions, 376 flow. Second operand 10 states and 765 transitions. [2024-11-08 17:32:27,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 153 transitions, 695 flow [2024-11-08 17:32:27,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 695 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:32:27,462 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 641 flow [2024-11-08 17:32:27,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=641, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-11-08 17:32:27,465 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 11 predicate places. [2024-11-08 17:32:27,465 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 641 flow [2024-11-08 17:32:27,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.08333333333333) internal successors, (817), 12 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:27,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:27,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:27,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:32:27,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:27,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:27,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2063700624, now seen corresponding path program 1 times [2024-11-08 17:32:27,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:27,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799477628] [2024-11-08 17:32:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:27,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799477628] [2024-11-08 17:32:27,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799477628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:27,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:27,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:27,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276916949] [2024-11-08 17:32:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:27,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:27,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:27,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 17:32:27,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 641 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 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) [2024-11-08 17:32:27,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:27,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 17:32:27,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:28,299 INFO L124 PetriNetUnfolderBase]: 1262/2690 cut-off events. [2024-11-08 17:32:28,299 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-08 17:32:28,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 2690 events. 1262/2690 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19796 event pairs, 826 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 4396. Up to 1604 conditions per place. [2024-11-08 17:32:28,324 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 89 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-11-08 17:32:28,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 152 transitions, 819 flow [2024-11-08 17:32:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:32:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-11-08 17:32:28,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-11-08 17:32:28,326 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 641 flow. Second operand 3 states and 258 transitions. [2024-11-08 17:32:28,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 152 transitions, 819 flow [2024-11-08 17:32:28,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 152 transitions, 782 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 17:32:28,330 INFO L231 Difference]: Finished difference. Result has 124 places, 152 transitions, 610 flow [2024-11-08 17:32:28,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=124, PETRI_TRANSITIONS=152} [2024-11-08 17:32:28,331 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2024-11-08 17:32:28,332 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 152 transitions, 610 flow [2024-11-08 17:32:28,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 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) [2024-11-08 17:32:28,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:28,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:28,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:32:28,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:28,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash -915197208, now seen corresponding path program 1 times [2024-11-08 17:32:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262710221] [2024-11-08 17:32:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:32:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262710221] [2024-11-08 17:32:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262710221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361456098] [2024-11-08 17:32:28,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:28,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:28,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 123 [2024-11-08 17:32:28,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 152 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:28,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:28,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 123 [2024-11-08 17:32:28,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:29,001 INFO L124 PetriNetUnfolderBase]: 1258/2684 cut-off events. [2024-11-08 17:32:29,001 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-08 17:32:29,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4490 conditions, 2684 events. 1258/2684 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19622 event pairs, 826 based on Foata normal form. 4/2029 useless extension candidates. Maximal degree in co-relation 4461. Up to 1587 conditions per place. [2024-11-08 17:32:29,027 INFO L140 encePairwiseOnDemand]: 113/123 looper letters, 77 selfloop transitions, 12 changer transitions 0/150 dead transitions. [2024-11-08 17:32:29,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 150 transitions, 775 flow [2024-11-08 17:32:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-11-08 17:32:29,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727642276422764 [2024-11-08 17:32:29,029 INFO L175 Difference]: Start difference. First operand has 124 places, 152 transitions, 610 flow. Second operand 4 states and 331 transitions. [2024-11-08 17:32:29,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 150 transitions, 775 flow [2024-11-08 17:32:29,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 150 transitions, 761 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:32:29,035 INFO L231 Difference]: Finished difference. Result has 126 places, 150 transitions, 627 flow [2024-11-08 17:32:29,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=627, PETRI_PLACES=126, PETRI_TRANSITIONS=150} [2024-11-08 17:32:29,037 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 14 predicate places. [2024-11-08 17:32:29,037 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 150 transitions, 627 flow [2024-11-08 17:32:29,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:29,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:29,038 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 17:32:29,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:32:29,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:29,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash -875733602, now seen corresponding path program 2 times [2024-11-08 17:32:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:29,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540821364] [2024-11-08 17:32:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:29,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540821364] [2024-11-08 17:32:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540821364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936496762] [2024-11-08 17:32:29,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:32:29,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:29,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:29,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:29,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:32:29,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:32:29,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:32:29,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:32:29,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:32:29,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:32:29,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936496762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:29,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:29,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 17:32:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980609667] [2024-11-08 17:32:29,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:29,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:32:29,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:32:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:32:29,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2024-11-08 17:32:29,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 150 transitions, 627 flow. Second operand has 15 states, 15 states have (on average 59.53333333333333) internal successors, (893), 15 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:29,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:29,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2024-11-08 17:32:29,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:30,562 INFO L124 PetriNetUnfolderBase]: 1269/2721 cut-off events. [2024-11-08 17:32:30,563 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-11-08 17:32:30,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2721 events. 1269/2721 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19915 event pairs, 826 based on Foata normal form. 6/2068 useless extension candidates. Maximal degree in co-relation 4498. Up to 1553 conditions per place. [2024-11-08 17:32:30,586 INFO L140 encePairwiseOnDemand]: 105/123 looper letters, 82 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-11-08 17:32:30,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 212 transitions, 1203 flow [2024-11-08 17:32:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 17:32:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 17:32:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1726 transitions. [2024-11-08 17:32:30,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5197229750075278 [2024-11-08 17:32:30,592 INFO L175 Difference]: Start difference. First operand has 126 places, 150 transitions, 627 flow. Second operand 27 states and 1726 transitions. [2024-11-08 17:32:30,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 212 transitions, 1203 flow [2024-11-08 17:32:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 212 transitions, 1171 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:32:30,602 INFO L231 Difference]: Finished difference. Result has 151 places, 186 transitions, 976 flow [2024-11-08 17:32:30,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=976, PETRI_PLACES=151, PETRI_TRANSITIONS=186} [2024-11-08 17:32:30,603 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 39 predicate places. [2024-11-08 17:32:30,603 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 186 transitions, 976 flow [2024-11-08 17:32:30,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 59.53333333333333) internal successors, (893), 15 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:30,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:30,604 INFO L204 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] [2024-11-08 17:32:30,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:32:30,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 17:32:30,808 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:30,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2037253270, now seen corresponding path program 1 times [2024-11-08 17:32:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:30,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682100480] [2024-11-08 17:32:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:32:31,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682100480] [2024-11-08 17:32:31,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682100480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952005645] [2024-11-08 17:32:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:31,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:31,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:31,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:31,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:32:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:31,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:32:31,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:31,399 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 [2024-11-08 17:32:31,441 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 [2024-11-08 17:32:31,496 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:32:31,497 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 [2024-11-08 17:32:31,517 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 [2024-11-08 17:32:31,534 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 [2024-11-08 17:32:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:32:31,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:31,592 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_99 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_99) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2024-11-08 17:32:31,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:31,688 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 24 treesize of output 25 [2024-11-08 17:32:31,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:31,704 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 39 treesize of output 35 [2024-11-08 17:32:31,712 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 11 treesize of output 9 [2024-11-08 17:32:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-08 17:32:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952005645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:31,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-08 17:32:31,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999652788] [2024-11-08 17:32:31,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:31,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:32:31,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:32:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2024-11-08 17:32:31,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 123 [2024-11-08 17:32:31,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 186 transitions, 976 flow. Second operand has 14 states, 14 states have (on average 48.714285714285715) internal successors, (682), 14 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:31,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:31,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 123 [2024-11-08 17:32:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:32,785 INFO L124 PetriNetUnfolderBase]: 1267/2724 cut-off events. [2024-11-08 17:32:32,785 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2024-11-08 17:32:32,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 2724 events. 1267/2724 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19928 event pairs, 826 based on Foata normal form. 0/2063 useless extension candidates. Maximal degree in co-relation 4652. Up to 1529 conditions per place. [2024-11-08 17:32:32,811 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 128 selfloop transitions, 30 changer transitions 0/197 dead transitions. [2024-11-08 17:32:32,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 197 transitions, 1316 flow [2024-11-08 17:32:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:32:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 17:32:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 598 transitions. [2024-11-08 17:32:32,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44198078344419806 [2024-11-08 17:32:32,814 INFO L175 Difference]: Start difference. First operand has 151 places, 186 transitions, 976 flow. Second operand 11 states and 598 transitions. [2024-11-08 17:32:32,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 197 transitions, 1316 flow [2024-11-08 17:32:32,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 197 transitions, 1120 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-11-08 17:32:32,821 INFO L231 Difference]: Finished difference. Result has 149 places, 185 transitions, 838 flow [2024-11-08 17:32:32,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=838, PETRI_PLACES=149, PETRI_TRANSITIONS=185} [2024-11-08 17:32:32,824 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 37 predicate places. [2024-11-08 17:32:32,825 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 185 transitions, 838 flow [2024-11-08 17:32:32,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.714285714285715) internal successors, (682), 14 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:32,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:32,826 INFO L204 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] [2024-11-08 17:32:32,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:32:33,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:33,026 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:33,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:33,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1269727810, now seen corresponding path program 1 times [2024-11-08 17:32:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:33,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803496577] [2024-11-08 17:32:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:33,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:32:33,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803496577] [2024-11-08 17:32:33,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803496577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634165588] [2024-11-08 17:32:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:33,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:33,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:33,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:33,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:32:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:33,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:32:33,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:33,560 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 [2024-11-08 17:32:33,586 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 [2024-11-08 17:32:33,633 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:32:33,633 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 [2024-11-08 17:32:33,653 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 [2024-11-08 17:32:33,667 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 [2024-11-08 17:32:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:32:33,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:33,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:33,815 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 22 treesize of output 23 [2024-11-08 17:32:33,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:33,825 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 33 treesize of output 29 [2024-11-08 17:32:33,831 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 9 treesize of output 7 [2024-11-08 17:32:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:32:33,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634165588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:33,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:33,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-08 17:32:33,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458285632] [2024-11-08 17:32:33,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:33,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:32:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:32:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2024-11-08 17:32:34,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 123 [2024-11-08 17:32:34,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 185 transitions, 838 flow. Second operand has 14 states, 14 states have (on average 48.642857142857146) internal successors, (681), 14 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:34,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:34,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 123 [2024-11-08 17:32:34,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:35,003 INFO L124 PetriNetUnfolderBase]: 1267/2723 cut-off events. [2024-11-08 17:32:35,004 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-11-08 17:32:35,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4695 conditions, 2723 events. 1267/2723 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19901 event pairs, 826 based on Foata normal form. 1/2064 useless extension candidates. Maximal degree in co-relation 4600. Up to 1533 conditions per place. [2024-11-08 17:32:35,027 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 121 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-11-08 17:32:35,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 1154 flow [2024-11-08 17:32:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:32:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 17:32:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 590 transitions. [2024-11-08 17:32:35,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4360679970436068 [2024-11-08 17:32:35,030 INFO L175 Difference]: Start difference. First operand has 149 places, 185 transitions, 838 flow. Second operand 11 states and 590 transitions. [2024-11-08 17:32:35,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 1154 flow [2024-11-08 17:32:35,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 191 transitions, 1122 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:32:35,037 INFO L231 Difference]: Finished difference. Result has 154 places, 184 transitions, 864 flow [2024-11-08 17:32:35,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=864, PETRI_PLACES=154, PETRI_TRANSITIONS=184} [2024-11-08 17:32:35,038 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2024-11-08 17:32:35,038 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 184 transitions, 864 flow [2024-11-08 17:32:35,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.642857142857146) internal successors, (681), 14 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:35,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:35,039 INFO L204 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] [2024-11-08 17:32:35,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:32:35,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:35,244 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:35,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash -706855353, now seen corresponding path program 1 times [2024-11-08 17:32:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:35,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029727740] [2024-11-08 17:32:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:35,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:32:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029727740] [2024-11-08 17:32:35,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029727740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:35,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:35,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616629995] [2024-11-08 17:32:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:35,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:35,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-11-08 17:32:35,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 184 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:35,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:35,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-11-08 17:32:35,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:35,884 INFO L124 PetriNetUnfolderBase]: 1266/2721 cut-off events. [2024-11-08 17:32:35,884 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-11-08 17:32:35,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 2721 events. 1266/2721 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19982 event pairs, 826 based on Foata normal form. 2/2063 useless extension candidates. Maximal degree in co-relation 4544. Up to 1581 conditions per place. [2024-11-08 17:32:35,907 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 97 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2024-11-08 17:32:35,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 184 transitions, 1072 flow [2024-11-08 17:32:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2024-11-08 17:32:35,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-08 17:32:35,910 INFO L175 Difference]: Start difference. First operand has 154 places, 184 transitions, 864 flow. Second operand 4 states and 306 transitions. [2024-11-08 17:32:35,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 184 transitions, 1072 flow [2024-11-08 17:32:35,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 184 transitions, 1002 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-08 17:32:35,916 INFO L231 Difference]: Finished difference. Result has 146 places, 182 transitions, 804 flow [2024-11-08 17:32:35,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=804, PETRI_PLACES=146, PETRI_TRANSITIONS=182} [2024-11-08 17:32:35,918 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 34 predicate places. [2024-11-08 17:32:35,918 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 182 transitions, 804 flow [2024-11-08 17:32:35,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:35,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:35,918 INFO L204 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] [2024-11-08 17:32:35,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:32:35,919 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:35,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash -706856486, now seen corresponding path program 1 times [2024-11-08 17:32:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:35,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655276401] [2024-11-08 17:32:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:35,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655276401] [2024-11-08 17:32:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655276401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149482148] [2024-11-08 17:32:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:36,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:36,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:36,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:32:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:36,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:32:36,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:36,666 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 [2024-11-08 17:32:36,696 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 [2024-11-08 17:32:36,747 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 17:32:36,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 17:32:36,787 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 [2024-11-08 17:32:36,831 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:32:36,832 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 [2024-11-08 17:32:36,864 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 [2024-11-08 17:32:36,908 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 [2024-11-08 17:32:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:36,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:37,022 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_167 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_167) c_~A~0.base) c_~A~0.offset) 2147483649))) is different from false [2024-11-08 17:32:37,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:37,287 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 27 treesize of output 28 [2024-11-08 17:32:37,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:37,301 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 143 treesize of output 135 [2024-11-08 17:32:37,321 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 27 treesize of output 25 [2024-11-08 17:32:37,329 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 28 treesize of output 24 [2024-11-08 17:32:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-08 17:32:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149482148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:37,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:37,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-08 17:32:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755252582] [2024-11-08 17:32:37,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:37,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 17:32:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 17:32:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=386, Unknown=2, NotChecked=40, Total=506 [2024-11-08 17:32:37,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-11-08 17:32:37,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 182 transitions, 804 flow. Second operand has 23 states, 23 states have (on average 44.34782608695652) internal successors, (1020), 23 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:37,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:37,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-11-08 17:32:37,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:38,803 INFO L124 PetriNetUnfolderBase]: 1266/2718 cut-off events. [2024-11-08 17:32:38,803 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-08 17:32:38,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2718 events. 1266/2718 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19916 event pairs, 826 based on Foata normal form. 0/2061 useless extension candidates. Maximal degree in co-relation 4588. Up to 1529 conditions per place. [2024-11-08 17:32:38,825 INFO L140 encePairwiseOnDemand]: 104/123 looper letters, 122 selfloop transitions, 34 changer transitions 0/191 dead transitions. [2024-11-08 17:32:38,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 1136 flow [2024-11-08 17:32:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:32:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:32:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 683 transitions. [2024-11-08 17:32:38,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39663182346109177 [2024-11-08 17:32:38,828 INFO L175 Difference]: Start difference. First operand has 146 places, 182 transitions, 804 flow. Second operand 14 states and 683 transitions. [2024-11-08 17:32:38,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 1136 flow [2024-11-08 17:32:38,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 191 transitions, 1115 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:32:38,834 INFO L231 Difference]: Finished difference. Result has 158 places, 182 transitions, 863 flow [2024-11-08 17:32:38,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=863, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2024-11-08 17:32:38,835 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 46 predicate places. [2024-11-08 17:32:38,835 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 182 transitions, 863 flow [2024-11-08 17:32:38,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 44.34782608695652) internal successors, (1020), 23 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:38,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:38,836 INFO L204 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] [2024-11-08 17:32:38,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:32:39,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:39,041 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:39,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash -437713546, now seen corresponding path program 1 times [2024-11-08 17:32:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:39,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146976155] [2024-11-08 17:32:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:39,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:39,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146976155] [2024-11-08 17:32:39,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146976155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:39,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012184048] [2024-11-08 17:32:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:39,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:39,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:39,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:32:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:39,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:32:39,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:39,683 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 [2024-11-08 17:32:39,714 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 [2024-11-08 17:32:39,763 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 17:32:39,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 17:32:39,804 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 [2024-11-08 17:32:39,847 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:32:39,847 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 [2024-11-08 17:32:39,877 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 [2024-11-08 17:32:39,906 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 [2024-11-08 17:32:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:39,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:40,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:40,303 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 25 treesize of output 26 [2024-11-08 17:32:40,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:32:40,315 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 63 treesize of output 59 [2024-11-08 17:32:40,322 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 48 treesize of output 44 [2024-11-08 17:32:40,330 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 20 [2024-11-08 17:32:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012184048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:40,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:40,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-08 17:32:40,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683282392] [2024-11-08 17:32:40,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:40,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:32:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:32:40,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=466, Unknown=5, NotChecked=0, Total=552 [2024-11-08 17:32:41,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-11-08 17:32:41,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 182 transitions, 863 flow. Second operand has 24 states, 24 states have (on average 44.291666666666664) internal successors, (1063), 24 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:41,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:41,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-11-08 17:32:41,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:42,582 INFO L124 PetriNetUnfolderBase]: 1266/2718 cut-off events. [2024-11-08 17:32:42,583 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-11-08 17:32:42,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4723 conditions, 2718 events. 1266/2718 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19899 event pairs, 826 based on Foata normal form. 4/2067 useless extension candidates. Maximal degree in co-relation 4648. Up to 1534 conditions per place. [2024-11-08 17:32:42,604 INFO L140 encePairwiseOnDemand]: 102/123 looper letters, 116 selfloop transitions, 38 changer transitions 1/190 dead transitions. [2024-11-08 17:32:42,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 190 transitions, 1204 flow [2024-11-08 17:32:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:32:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 17:32:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 804 transitions. [2024-11-08 17:32:42,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38450502152080346 [2024-11-08 17:32:42,608 INFO L175 Difference]: Start difference. First operand has 158 places, 182 transitions, 863 flow. Second operand 17 states and 804 transitions. [2024-11-08 17:32:42,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 190 transitions, 1204 flow [2024-11-08 17:32:42,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 190 transitions, 1133 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-08 17:32:42,615 INFO L231 Difference]: Finished difference. Result has 166 places, 185 transitions, 898 flow [2024-11-08 17:32:42,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=898, PETRI_PLACES=166, PETRI_TRANSITIONS=185} [2024-11-08 17:32:42,616 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2024-11-08 17:32:42,617 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 185 transitions, 898 flow [2024-11-08 17:32:42,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 44.291666666666664) internal successors, (1063), 24 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:42,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:42,618 INFO L204 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] [2024-11-08 17:32:42,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:32:42,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:42,821 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:42,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1424922212, now seen corresponding path program 1 times [2024-11-08 17:32:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:42,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930263071] [2024-11-08 17:32:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:32:42,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930263071] [2024-11-08 17:32:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930263071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900156924] [2024-11-08 17:32:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:42,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:42,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2024-11-08 17:32:42,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 185 transitions, 898 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:42,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:42,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2024-11-08 17:32:42,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:43,411 INFO L124 PetriNetUnfolderBase]: 1266/2716 cut-off events. [2024-11-08 17:32:43,411 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-11-08 17:32:43,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 2716 events. 1266/2716 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19908 event pairs, 826 based on Foata normal form. 2/2067 useless extension candidates. Maximal degree in co-relation 4627. Up to 1588 conditions per place. [2024-11-08 17:32:43,431 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 99 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2024-11-08 17:32:43,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 183 transitions, 1104 flow [2024-11-08 17:32:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2024-11-08 17:32:43,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6138211382113821 [2024-11-08 17:32:43,433 INFO L175 Difference]: Start difference. First operand has 166 places, 185 transitions, 898 flow. Second operand 4 states and 302 transitions. [2024-11-08 17:32:43,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 183 transitions, 1104 flow [2024-11-08 17:32:43,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 183 transitions, 1032 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-08 17:32:43,439 INFO L231 Difference]: Finished difference. Result has 156 places, 183 transitions, 834 flow [2024-11-08 17:32:43,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=156, PETRI_TRANSITIONS=183} [2024-11-08 17:32:43,440 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 44 predicate places. [2024-11-08 17:32:43,441 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 183 transitions, 834 flow [2024-11-08 17:32:43,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:43,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:43,441 INFO L204 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] [2024-11-08 17:32:43,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:32:43,442 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:43,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash -141969092, now seen corresponding path program 1 times [2024-11-08 17:32:43,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:43,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562268665] [2024-11-08 17:32:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:43,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:32:43,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:43,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562268665] [2024-11-08 17:32:43,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562268665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:43,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:43,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503122557] [2024-11-08 17:32:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:43,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:43,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 123 [2024-11-08 17:32:43,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 183 transitions, 834 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:43,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:43,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 123 [2024-11-08 17:32:43,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:44,323 INFO L124 PetriNetUnfolderBase]: 2609/5056 cut-off events. [2024-11-08 17:32:44,323 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-11-08 17:32:44,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 5056 events. 2609/5056 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 38542 event pairs, 1278 based on Foata normal form. 122/3915 useless extension candidates. Maximal degree in co-relation 8604. Up to 2455 conditions per place. [2024-11-08 17:32:44,407 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 141 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2024-11-08 17:32:44,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 224 transitions, 1210 flow [2024-11-08 17:32:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-11-08 17:32:44,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-11-08 17:32:44,409 INFO L175 Difference]: Start difference. First operand has 156 places, 183 transitions, 834 flow. Second operand 4 states and 376 transitions. [2024-11-08 17:32:44,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 224 transitions, 1210 flow [2024-11-08 17:32:44,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 224 transitions, 1196 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 17:32:44,416 INFO L231 Difference]: Finished difference. Result has 158 places, 186 transitions, 849 flow [2024-11-08 17:32:44,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=849, PETRI_PLACES=158, PETRI_TRANSITIONS=186} [2024-11-08 17:32:44,417 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 46 predicate places. [2024-11-08 17:32:44,417 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 186 transitions, 849 flow [2024-11-08 17:32:44,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:44,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:44,417 INFO L204 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] [2024-11-08 17:32:44,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:32:44,418 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:44,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1911567758, now seen corresponding path program 1 times [2024-11-08 17:32:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:44,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545989114] [2024-11-08 17:32:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:32:44,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:44,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545989114] [2024-11-08 17:32:44,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545989114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:44,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:44,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:44,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158918184] [2024-11-08 17:32:44,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:44,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:44,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:44,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 123 [2024-11-08 17:32:44,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 186 transitions, 849 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:44,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:44,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 123 [2024-11-08 17:32:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:45,502 INFO L124 PetriNetUnfolderBase]: 3192/5898 cut-off events. [2024-11-08 17:32:45,502 INFO L125 PetriNetUnfolderBase]: For 2271/2611 co-relation queries the response was YES. [2024-11-08 17:32:45,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12028 conditions, 5898 events. 3192/5898 cut-off events. For 2271/2611 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42457 event pairs, 1207 based on Foata normal form. 0/4452 useless extension candidates. Maximal degree in co-relation 11992. Up to 2474 conditions per place. [2024-11-08 17:32:45,589 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 124 selfloop transitions, 3 changer transitions 0/208 dead transitions. [2024-11-08 17:32:45,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 208 transitions, 1168 flow [2024-11-08 17:32:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:32:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-11-08 17:32:45,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-08 17:32:45,594 INFO L175 Difference]: Start difference. First operand has 158 places, 186 transitions, 849 flow. Second operand 3 states and 287 transitions. [2024-11-08 17:32:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 208 transitions, 1168 flow [2024-11-08 17:32:45,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 208 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:32:45,603 INFO L231 Difference]: Finished difference. Result has 160 places, 188 transitions, 867 flow [2024-11-08 17:32:45,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=867, PETRI_PLACES=160, PETRI_TRANSITIONS=188} [2024-11-08 17:32:45,604 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 48 predicate places. [2024-11-08 17:32:45,604 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 188 transitions, 867 flow [2024-11-08 17:32:45,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:45,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:45,605 INFO L204 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] [2024-11-08 17:32:45,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:32:45,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:45,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1911567752, now seen corresponding path program 1 times [2024-11-08 17:32:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958693507] [2024-11-08 17:32:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:32:45,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958693507] [2024-11-08 17:32:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958693507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601158021] [2024-11-08 17:32:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:45,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:45,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:45,820 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:45,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:32:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:45,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:32:45,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:32:46,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:32:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601158021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:46,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:46,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-08 17:32:46,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898969483] [2024-11-08 17:32:46,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:46,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:32:46,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:32:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:32:46,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2024-11-08 17:32:46,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 188 transitions, 867 flow. Second operand has 15 states, 15 states have (on average 56.666666666666664) internal successors, (850), 15 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:46,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:46,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2024-11-08 17:32:46,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:48,201 INFO L124 PetriNetUnfolderBase]: 5080/8651 cut-off events. [2024-11-08 17:32:48,201 INFO L125 PetriNetUnfolderBase]: For 3814/4409 co-relation queries the response was YES. [2024-11-08 17:32:48,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19663 conditions, 8651 events. 5080/8651 cut-off events. For 3814/4409 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 57677 event pairs, 3224 based on Foata normal form. 0/7085 useless extension candidates. Maximal degree in co-relation 19609. Up to 5250 conditions per place. [2024-11-08 17:32:48,263 INFO L140 encePairwiseOnDemand]: 99/123 looper letters, 203 selfloop transitions, 101 changer transitions 0/349 dead transitions. [2024-11-08 17:32:48,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 349 transitions, 2233 flow [2024-11-08 17:32:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:32:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:32:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 879 transitions. [2024-11-08 17:32:48,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.549718574108818 [2024-11-08 17:32:48,266 INFO L175 Difference]: Start difference. First operand has 160 places, 188 transitions, 867 flow. Second operand 13 states and 879 transitions. [2024-11-08 17:32:48,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 349 transitions, 2233 flow [2024-11-08 17:32:48,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 349 transitions, 2228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:32:48,279 INFO L231 Difference]: Finished difference. Result has 177 places, 247 transitions, 1579 flow [2024-11-08 17:32:48,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1579, PETRI_PLACES=177, PETRI_TRANSITIONS=247} [2024-11-08 17:32:48,280 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 65 predicate places. [2024-11-08 17:32:48,280 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 247 transitions, 1579 flow [2024-11-08 17:32:48,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.666666666666664) internal successors, (850), 15 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:48,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:48,281 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:48,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:32:48,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:32:48,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:48,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1063487991, now seen corresponding path program 1 times [2024-11-08 17:32:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:48,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585999961] [2024-11-08 17:32:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:48,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:32:48,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:48,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585999961] [2024-11-08 17:32:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585999961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:48,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855175685] [2024-11-08 17:32:48,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:48,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:48,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:48,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:32:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:48,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:32:48,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:32:48,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:32:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855175685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:48,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:48,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-08 17:32:48,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94925424] [2024-11-08 17:32:48,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:48,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:32:48,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:32:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:32:49,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 123 [2024-11-08 17:32:49,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 247 transitions, 1579 flow. Second operand has 15 states, 15 states have (on average 57.6) internal successors, (864), 15 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:49,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:49,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 123 [2024-11-08 17:32:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:51,384 INFO L124 PetriNetUnfolderBase]: 5666/10894 cut-off events. [2024-11-08 17:32:51,384 INFO L125 PetriNetUnfolderBase]: For 4478/4542 co-relation queries the response was YES. [2024-11-08 17:32:51,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22298 conditions, 10894 events. 5666/10894 cut-off events. For 4478/4542 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 89951 event pairs, 2873 based on Foata normal form. 0/8388 useless extension candidates. Maximal degree in co-relation 22239. Up to 5052 conditions per place. [2024-11-08 17:32:51,461 INFO L140 encePairwiseOnDemand]: 99/123 looper letters, 199 selfloop transitions, 101 changer transitions 0/347 dead transitions. [2024-11-08 17:32:51,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 347 transitions, 2643 flow [2024-11-08 17:32:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:32:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:32:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 895 transitions. [2024-11-08 17:32:51,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5597248280175109 [2024-11-08 17:32:51,463 INFO L175 Difference]: Start difference. First operand has 177 places, 247 transitions, 1579 flow. Second operand 13 states and 895 transitions. [2024-11-08 17:32:51,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 347 transitions, 2643 flow [2024-11-08 17:32:51,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 347 transitions, 2633 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-08 17:32:51,482 INFO L231 Difference]: Finished difference. Result has 192 places, 250 transitions, 1869 flow [2024-11-08 17:32:51,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1869, PETRI_PLACES=192, PETRI_TRANSITIONS=250} [2024-11-08 17:32:51,483 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 80 predicate places. [2024-11-08 17:32:51,483 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 250 transitions, 1869 flow [2024-11-08 17:32:51,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.6) internal successors, (864), 15 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:51,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:51,484 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:51,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:32:51,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:32:51,685 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash 765322222, now seen corresponding path program 1 times [2024-11-08 17:32:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776257677] [2024-11-08 17:32:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 17:32:51,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:51,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776257677] [2024-11-08 17:32:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776257677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:51,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063386275] [2024-11-08 17:32:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:51,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:51,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:51,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:51,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:32:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:52,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:32:52,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 17:32:52,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 17:32:52,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063386275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:52,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:52,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 17:32:52,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627166069] [2024-11-08 17:32:52,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:52,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:32:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:32:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:32:52,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2024-11-08 17:32:52,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 250 transitions, 1869 flow. Second operand has 20 states, 20 states have (on average 59.65) internal successors, (1193), 20 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:52,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2024-11-08 17:32:52,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:54,474 INFO L124 PetriNetUnfolderBase]: 3365/7052 cut-off events. [2024-11-08 17:32:54,474 INFO L125 PetriNetUnfolderBase]: For 6027/6343 co-relation queries the response was YES. [2024-11-08 17:32:54,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15034 conditions, 7052 events. 3365/7052 cut-off events. For 6027/6343 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 56538 event pairs, 2196 based on Foata normal form. 2/5452 useless extension candidates. Maximal degree in co-relation 14972. Up to 3775 conditions per place. [2024-11-08 17:32:54,513 INFO L140 encePairwiseOnDemand]: 104/123 looper letters, 110 selfloop transitions, 94 changer transitions 0/255 dead transitions. [2024-11-08 17:32:54,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 255 transitions, 2109 flow [2024-11-08 17:32:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:32:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:32:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 881 transitions. [2024-11-08 17:32:54,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5509693558474046 [2024-11-08 17:32:54,516 INFO L175 Difference]: Start difference. First operand has 192 places, 250 transitions, 1869 flow. Second operand 13 states and 881 transitions. [2024-11-08 17:32:54,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 255 transitions, 2109 flow [2024-11-08 17:32:54,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 255 transitions, 1956 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-11-08 17:32:54,534 INFO L231 Difference]: Finished difference. Result has 194 places, 221 transitions, 1604 flow [2024-11-08 17:32:54,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1604, PETRI_PLACES=194, PETRI_TRANSITIONS=221} [2024-11-08 17:32:54,535 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 82 predicate places. [2024-11-08 17:32:54,535 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 221 transitions, 1604 flow [2024-11-08 17:32:54,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 59.65) internal successors, (1193), 20 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:54,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:54,536 INFO L204 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, 1, 1, 1, 1] [2024-11-08 17:32:54,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:32:54,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:32:54,740 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:54,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 166960419, now seen corresponding path program 1 times [2024-11-08 17:32:54,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:54,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712644613] [2024-11-08 17:32:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:54,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:32:54,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712644613] [2024-11-08 17:32:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712644613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:54,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861921661] [2024-11-08 17:32:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:54,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:54,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-11-08 17:32:54,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 221 transitions, 1604 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:54,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:54,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-11-08 17:32:54,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:32:57,116 INFO L124 PetriNetUnfolderBase]: 7731/13744 cut-off events. [2024-11-08 17:32:57,116 INFO L125 PetriNetUnfolderBase]: For 13060/13778 co-relation queries the response was YES. [2024-11-08 17:32:57,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32077 conditions, 13744 events. 7731/13744 cut-off events. For 13060/13778 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 105554 event pairs, 3698 based on Foata normal form. 231/11339 useless extension candidates. Maximal degree in co-relation 31981. Up to 6614 conditions per place. [2024-11-08 17:32:57,273 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 195 selfloop transitions, 3 changer transitions 0/285 dead transitions. [2024-11-08 17:32:57,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 285 transitions, 2289 flow [2024-11-08 17:32:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:32:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-11-08 17:32:57,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2024-11-08 17:32:57,275 INFO L175 Difference]: Start difference. First operand has 194 places, 221 transitions, 1604 flow. Second operand 4 states and 376 transitions. [2024-11-08 17:32:57,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 285 transitions, 2289 flow [2024-11-08 17:32:57,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 285 transitions, 2191 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-08 17:32:57,320 INFO L231 Difference]: Finished difference. Result has 191 places, 223 transitions, 1528 flow [2024-11-08 17:32:57,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1528, PETRI_PLACES=191, PETRI_TRANSITIONS=223} [2024-11-08 17:32:57,321 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 79 predicate places. [2024-11-08 17:32:57,321 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 223 transitions, 1528 flow [2024-11-08 17:32:57,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:57,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:32:57,322 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 17:32:57,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:32:57,322 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:32:57,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:57,322 INFO L85 PathProgramCache]: Analyzing trace with hash 780121462, now seen corresponding path program 2 times [2024-11-08 17:32:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:32:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054198769] [2024-11-08 17:32:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:32:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:57,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:32:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054198769] [2024-11-08 17:32:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054198769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:32:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787233464] [2024-11-08 17:32:57,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:32:57,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:57,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:57,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:57,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:32:57,964 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:32:57,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:32:57,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:32:57,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 17:32:58,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:32:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 17:32:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787233464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:32:58,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:32:58,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4, 4] total 24 [2024-11-08 17:32:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886611030] [2024-11-08 17:32:58,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:32:58,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:32:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:32:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:32:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:32:58,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2024-11-08 17:32:58,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 223 transitions, 1528 flow. Second operand has 25 states, 25 states have (on average 59.68) internal successors, (1492), 25 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:58,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:32:58,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2024-11-08 17:32:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:33:02,869 INFO L124 PetriNetUnfolderBase]: 10536/20614 cut-off events. [2024-11-08 17:33:02,869 INFO L125 PetriNetUnfolderBase]: For 19208/20776 co-relation queries the response was YES. [2024-11-08 17:33:03,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48446 conditions, 20614 events. 10536/20614 cut-off events. For 19208/20776 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 179720 event pairs, 7396 based on Foata normal form. 209/17122 useless extension candidates. Maximal degree in co-relation 48310. Up to 6560 conditions per place. [2024-11-08 17:33:03,065 INFO L140 encePairwiseOnDemand]: 102/123 looper letters, 122 selfloop transitions, 140 changer transitions 0/314 dead transitions. [2024-11-08 17:33:03,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 314 transitions, 2580 flow [2024-11-08 17:33:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:33:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 17:33:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1624 transitions. [2024-11-08 17:33:03,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528130081300813 [2024-11-08 17:33:03,068 INFO L175 Difference]: Start difference. First operand has 191 places, 223 transitions, 1528 flow. Second operand 25 states and 1624 transitions. [2024-11-08 17:33:03,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 314 transitions, 2580 flow [2024-11-08 17:33:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 314 transitions, 2520 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-08 17:33:03,285 INFO L231 Difference]: Finished difference. Result has 207 places, 252 transitions, 1997 flow [2024-11-08 17:33:03,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1997, PETRI_PLACES=207, PETRI_TRANSITIONS=252} [2024-11-08 17:33:03,290 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 95 predicate places. [2024-11-08 17:33:03,290 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 252 transitions, 1997 flow [2024-11-08 17:33:03,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 59.68) internal successors, (1492), 25 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:03,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:33:03,291 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:03,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:33:03,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-08 17:33:03,492 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:33:03,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234994, now seen corresponding path program 1 times [2024-11-08 17:33:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:03,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158784642] [2024-11-08 17:33:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:33:04,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:04,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158784642] [2024-11-08 17:33:04,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158784642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:33:04,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536143406] [2024-11-08 17:33:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:04,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:04,286 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:04,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:33:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:04,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 17:33:04,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:04,447 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 [2024-11-08 17:33:04,477 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 19 treesize of output 1 [2024-11-08 17:33:04,516 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 17:33:04,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 17:33:04,538 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 [2024-11-08 17:33:04,569 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 [2024-11-08 17:33:04,596 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:33:04,596 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 [2024-11-08 17:33:04,610 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 [2024-11-08 17:33:04,631 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 [2024-11-08 17:33:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:33:04,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:04,746 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_423) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2024-11-08 17:33:04,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:04,984 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 27 treesize of output 28 [2024-11-08 17:33:04,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:04,996 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 71 treesize of output 65 [2024-11-08 17:33:05,004 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 28 treesize of output 24 [2024-11-08 17:33:05,010 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 50 treesize of output 42 [2024-11-08 17:33:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2024-11-08 17:33:05,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536143406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:05,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:33:05,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-08 17:33:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63720432] [2024-11-08 17:33:05,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:05,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:33:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:33:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=259, Unknown=1, NotChecked=32, Total=342 [2024-11-08 17:33:05,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-11-08 17:33:05,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 252 transitions, 1997 flow. Second operand has 19 states, 19 states have (on average 53.578947368421055) internal successors, (1018), 19 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:05,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:33:05,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-11-08 17:33:05,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:33:09,986 INFO L124 PetriNetUnfolderBase]: 14358/22733 cut-off events. [2024-11-08 17:33:09,986 INFO L125 PetriNetUnfolderBase]: For 23734/26762 co-relation queries the response was YES. [2024-11-08 17:33:10,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61438 conditions, 22733 events. 14358/22733 cut-off events. For 23734/26762 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 165103 event pairs, 6254 based on Foata normal form. 593/20721 useless extension candidates. Maximal degree in co-relation 61243. Up to 10780 conditions per place. [2024-11-08 17:33:10,174 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 228 selfloop transitions, 77 changer transitions 0/348 dead transitions. [2024-11-08 17:33:10,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 348 transitions, 3040 flow [2024-11-08 17:33:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:33:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:33:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 923 transitions. [2024-11-08 17:33:10,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5002710027100271 [2024-11-08 17:33:10,176 INFO L175 Difference]: Start difference. First operand has 207 places, 252 transitions, 1997 flow. Second operand 15 states and 923 transitions. [2024-11-08 17:33:10,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 348 transitions, 3040 flow [2024-11-08 17:33:10,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 348 transitions, 2842 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 17:33:10,260 INFO L231 Difference]: Finished difference. Result has 217 places, 259 transitions, 2051 flow [2024-11-08 17:33:10,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2051, PETRI_PLACES=217, PETRI_TRANSITIONS=259} [2024-11-08 17:33:10,261 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 105 predicate places. [2024-11-08 17:33:10,261 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 259 transitions, 2051 flow [2024-11-08 17:33:10,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 53.578947368421055) internal successors, (1018), 19 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:10,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:33:10,262 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:10,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:10,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:10,466 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:33:10,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234990, now seen corresponding path program 2 times [2024-11-08 17:33:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:10,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525229849] [2024-11-08 17:33:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:10,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:33:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525229849] [2024-11-08 17:33:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525229849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:33:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355980333] [2024-11-08 17:33:11,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:33:11,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:11,667 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:11,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:33:11,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:33:11,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:33:11,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 17:33:11,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:11,899 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 [2024-11-08 17:33:12,000 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 [2024-11-08 17:33:12,045 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:33:12,045 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 [2024-11-08 17:33:12,067 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 [2024-11-08 17:33:12,101 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 [2024-11-08 17:33:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:33:12,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:12,282 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_464) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2024-11-08 17:33:12,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:12,395 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 [2024-11-08 17:33:12,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:12,407 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 43 treesize of output 37 [2024-11-08 17:33:12,413 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 9 [2024-11-08 17:33:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 4 not checked. [2024-11-08 17:33:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355980333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:12,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:33:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 26 [2024-11-08 17:33:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871894418] [2024-11-08 17:33:12,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:12,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:33:12,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:33:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=578, Unknown=1, NotChecked=48, Total=702 [2024-11-08 17:33:12,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 123 [2024-11-08 17:33:12,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 259 transitions, 2051 flow. Second operand has 27 states, 27 states have (on average 46.22222222222222) internal successors, (1248), 27 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:12,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:33:12,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 123 [2024-11-08 17:33:12,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:33:24,274 INFO L124 PetriNetUnfolderBase]: 44258/67158 cut-off events. [2024-11-08 17:33:24,274 INFO L125 PetriNetUnfolderBase]: For 74165/78258 co-relation queries the response was YES. [2024-11-08 17:33:24,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185697 conditions, 67158 events. 44258/67158 cut-off events. For 74165/78258 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 466254 event pairs, 12495 based on Foata normal form. 757/58973 useless extension candidates. Maximal degree in co-relation 185500. Up to 12052 conditions per place. [2024-11-08 17:33:24,806 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 331 selfloop transitions, 134 changer transitions 0/500 dead transitions. [2024-11-08 17:33:24,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 500 transitions, 3982 flow [2024-11-08 17:33:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 17:33:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-08 17:33:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1837 transitions. [2024-11-08 17:33:24,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4267131242740999 [2024-11-08 17:33:24,811 INFO L175 Difference]: Start difference. First operand has 217 places, 259 transitions, 2051 flow. Second operand 35 states and 1837 transitions. [2024-11-08 17:33:24,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 500 transitions, 3982 flow [2024-11-08 17:33:25,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 500 transitions, 3902 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:33:25,327 INFO L231 Difference]: Finished difference. Result has 249 places, 277 transitions, 2423 flow [2024-11-08 17:33:25,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2423, PETRI_PLACES=249, PETRI_TRANSITIONS=277} [2024-11-08 17:33:25,328 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 137 predicate places. [2024-11-08 17:33:25,328 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 277 transitions, 2423 flow [2024-11-08 17:33:25,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 46.22222222222222) internal successors, (1248), 27 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:25,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:33:25,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:25,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:33:25,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:25,530 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:33:25,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:25,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234993, now seen corresponding path program 1 times [2024-11-08 17:33:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:25,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599431334] [2024-11-08 17:33:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:25,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:33:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599431334] [2024-11-08 17:33:26,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599431334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:33:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664757946] [2024-11-08 17:33:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:26,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:26,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:26,218 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:26,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:33:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:26,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:33:26,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:26,395 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 [2024-11-08 17:33:26,426 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 19 treesize of output 1 [2024-11-08 17:33:26,466 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 17:33:26,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 17:33:26,490 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 20 treesize of output 15 [2024-11-08 17:33:26,519 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 20 treesize of output 15 [2024-11-08 17:33:26,548 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:33:26,548 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 [2024-11-08 17:33:26,563 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 20 treesize of output 15 [2024-11-08 17:33:26,584 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 20 treesize of output 15 [2024-11-08 17:33:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:33:26,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:26,894 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_507 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_507) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2024-11-08 17:33:27,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:27,135 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 29 treesize of output 30 [2024-11-08 17:33:27,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:27,148 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 159 treesize of output 147 [2024-11-08 17:33:27,157 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 29 treesize of output 25 [2024-11-08 17:33:27,165 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 32 treesize of output 24 [2024-11-08 17:33:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2024-11-08 17:33:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664757946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:27,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:33:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-08 17:33:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33507542] [2024-11-08 17:33:27,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:27,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:33:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:33:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=259, Unknown=1, NotChecked=32, Total=342 [2024-11-08 17:33:27,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-11-08 17:33:27,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 277 transitions, 2423 flow. Second operand has 19 states, 19 states have (on average 53.578947368421055) internal successors, (1018), 19 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:27,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:33:27,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-11-08 17:33:27,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:33:32,334 INFO L124 PetriNetUnfolderBase]: 13912/22457 cut-off events. [2024-11-08 17:33:32,335 INFO L125 PetriNetUnfolderBase]: For 38827/41735 co-relation queries the response was YES. [2024-11-08 17:33:32,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70331 conditions, 22457 events. 13912/22457 cut-off events. For 38827/41735 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 166024 event pairs, 6651 based on Foata normal form. 784/21633 useless extension candidates. Maximal degree in co-relation 70122. Up to 11415 conditions per place. [2024-11-08 17:33:32,535 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 235 selfloop transitions, 84 changer transitions 0/362 dead transitions. [2024-11-08 17:33:32,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 362 transitions, 3423 flow [2024-11-08 17:33:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:33:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:33:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 921 transitions. [2024-11-08 17:33:32,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4991869918699187 [2024-11-08 17:33:32,537 INFO L175 Difference]: Start difference. First operand has 249 places, 277 transitions, 2423 flow. Second operand 15 states and 921 transitions. [2024-11-08 17:33:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 362 transitions, 3423 flow [2024-11-08 17:33:32,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 362 transitions, 3298 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-08 17:33:32,681 INFO L231 Difference]: Finished difference. Result has 255 places, 276 transitions, 2462 flow [2024-11-08 17:33:32,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2462, PETRI_PLACES=255, PETRI_TRANSITIONS=276} [2024-11-08 17:33:32,682 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 143 predicate places. [2024-11-08 17:33:32,682 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 276 transitions, 2462 flow [2024-11-08 17:33:32,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 53.578947368421055) internal successors, (1018), 19 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:32,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:33:32,683 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:32,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:33:32,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:32,883 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-08 17:33:32,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1613234991, now seen corresponding path program 1 times [2024-11-08 17:33:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727053932] [2024-11-08 17:33:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:33:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727053932] [2024-11-08 17:33:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727053932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:33:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301791175] [2024-11-08 17:33:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:33,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:33,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:33,972 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:33,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c65d6-5b07-4c23-b815-beb5885af8df/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:33:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:34,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:33:34,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:34,143 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 [2024-11-08 17:33:34,229 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 19 treesize of output 1 [2024-11-08 17:33:34,277 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:33:34,277 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 [2024-11-08 17:33:34,311 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 [2024-11-08 17:33:34,330 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 [2024-11-08 17:33:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:33:34,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:34,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:34,636 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 24 treesize of output 25 [2024-11-08 17:33:34,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:34,645 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 37 treesize of output 31 [2024-11-08 17:33:34,650 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 11 treesize of output 7 [2024-11-08 17:33:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:33:34,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301791175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:34,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:33:34,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 29 [2024-11-08 17:33:34,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974190686] [2024-11-08 17:33:34,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:34,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:33:34,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:33:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=776, Unknown=2, NotChecked=0, Total=870 [2024-11-08 17:33:35,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 123 [2024-11-08 17:33:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 276 transitions, 2462 flow. Second operand has 30 states, 30 states have (on average 46.53333333333333) internal successors, (1396), 30 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:33:35,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 123 [2024-11-08 17:33:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand