./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB --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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:22:16,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:22:17,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:22:17,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:22:17,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:22:17,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:22:17,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:22:17,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:22:17,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:22:17,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:22:17,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:22:17,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:22:17,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:22:17,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:22:17,121 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:22:17,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:22:17,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:22:17,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:22:17,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:22:17,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:22:17,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:22:17,123 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:22:17,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:22:17,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:22:17,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:22:17,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:22:17,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:22:17,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:22:17,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:22:17,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:22:17,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:22:17,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:22:17,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:22:17,127 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-28 04:22:17,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:22:17,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:22:17,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:22:17,577 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:22:17,577 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:22:17,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-28 04:22:21,197 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/data/4118234ff/e486360eb33e4179b4a1c049f642995d/FLAGc8f363976 [2024-11-28 04:22:21,627 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:22:21,628 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-28 04:22:21,646 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/data/4118234ff/e486360eb33e4179b4a1c049f642995d/FLAGc8f363976 [2024-11-28 04:22:21,676 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/data/4118234ff/e486360eb33e4179b4a1c049f642995d [2024-11-28 04:22:21,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:22:21,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:22:21,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:22:21,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:22:21,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:22:21,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:22:21" (1/1) ... [2024-11-28 04:22:21,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14358d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:21, skipping insertion in model container [2024-11-28 04:22:21,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:22:21" (1/1) ... [2024-11-28 04:22:21,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:22:21,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:22:21,992 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:22:22,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:22:22,088 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:22:22,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22 WrapperNode [2024-11-28 04:22:22,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:22:22,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:22:22,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:22:22,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:22:22,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,172 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 324 [2024-11-28 04:22:22,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:22:22,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:22:22,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:22:22,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:22:22,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,246 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 04:22:22,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,272 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:22:22,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:22:22,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:22:22,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:22:22,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (1/1) ... [2024-11-28 04:22:22,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:22:22,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:22,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:22:22,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:22:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:22:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:22:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:22:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:22:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:22:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:22:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:22:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:22:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:22:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:22:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:22:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:22:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:22:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:22:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:22:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:22:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:22:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:22:22,391 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:22:22,590 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:22:22,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:22:23,683 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:22:23,685 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:22:24,536 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:22:24,538 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 04:22:24,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:24 BoogieIcfgContainer [2024-11-28 04:22:24,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:22:24,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:22:24,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:22:24,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:22:24,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:22:21" (1/3) ... [2024-11-28 04:22:24,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:22:24, skipping insertion in model container [2024-11-28 04:22:24,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:22" (2/3) ... [2024-11-28 04:22:24,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:22:24, skipping insertion in model container [2024-11-28 04:22:24,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:24" (3/3) ... [2024-11-28 04:22:24,556 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-28 04:22:24,579 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:22:24,581 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-dot-product.wvr.c that has 4 procedures, 88 locations, 1 initial locations, 8 loop locations, and 34 error locations. [2024-11-28 04:22:24,581 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:22:24,837 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:22:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2024-11-28 04:22:24,981 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2024-11-28 04:22:24,984 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:22:24,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 11/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 353 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-11-28 04:22:24,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2024-11-28 04:22:24,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2024-11-28 04:22:25,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:22:25,028 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;@356a9d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:22:25,028 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-11-28 04:22:25,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:22:25,033 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:22:25,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:22:25,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:25,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:22:25,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:25,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1074957, now seen corresponding path program 1 times [2024-11-28 04:22:25,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:25,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342129073] [2024-11-28 04:22:25,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:25,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342129073] [2024-11-28 04:22:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342129073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:25,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:22:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068702225] [2024-11-28 04:22:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:25,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:25,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:25,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:25,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-28 04:22:25,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:25,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:25,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-28 04:22:25,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:29,796 INFO L124 PetriNetUnfolderBase]: 10482/18116 cut-off events. [2024-11-28 04:22:29,796 INFO L125 PetriNetUnfolderBase]: For 587/587 co-relation queries the response was YES. [2024-11-28 04:22:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33004 conditions, 18116 events. 10482/18116 cut-off events. For 587/587 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 148600 event pairs, 8602 based on Foata normal form. 941/11984 useless extension candidates. Maximal degree in co-relation 31773. Up to 14406 conditions per place. [2024-11-28 04:22:29,994 INFO L140 encePairwiseOnDemand]: 81/98 looper letters, 50 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2024-11-28 04:22:29,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 291 flow [2024-11-28 04:22:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:22:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-28 04:22:30,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46683673469387754 [2024-11-28 04:22:30,020 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 183 transitions. [2024-11-28 04:22:30,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 291 flow [2024-11-28 04:22:30,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 282 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:22:30,043 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 182 flow [2024-11-28 04:22:30,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-11-28 04:22:30,053 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -10 predicate places. [2024-11-28 04:22:30,053 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 182 flow [2024-11-28 04:22:30,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:30,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:30,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 04:22:30,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:22:30,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:30,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 33324757, now seen corresponding path program 1 times [2024-11-28 04:22:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:30,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132137084] [2024-11-28 04:22:30,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:30,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:30,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132137084] [2024-11-28 04:22:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132137084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:30,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:30,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:22:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305842262] [2024-11-28 04:22:30,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:30,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:30,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:30,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:30,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:30,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-28 04:22:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:30,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-28 04:22:30,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:33,457 INFO L124 PetriNetUnfolderBase]: 10484/18124 cut-off events. [2024-11-28 04:22:33,457 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-28 04:22:33,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32858 conditions, 18124 events. 10484/18124 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 148492 event pairs, 8602 based on Foata normal form. 2/11055 useless extension candidates. Maximal degree in co-relation 32810. Up to 14415 conditions per place. [2024-11-28 04:22:33,597 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-28 04:22:33,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 328 flow [2024-11-28 04:22:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:22:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-11-28 04:22:33,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-11-28 04:22:33,606 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 182 flow. Second operand 4 states and 180 transitions. [2024-11-28 04:22:33,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 328 flow [2024-11-28 04:22:33,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:22:33,613 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 226 flow [2024-11-28 04:22:33,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-11-28 04:22:33,615 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -7 predicate places. [2024-11-28 04:22:33,616 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 226 flow [2024-11-28 04:22:33,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:33,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:33,618 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:22:33,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:22:33,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:33,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 641421724, now seen corresponding path program 1 times [2024-11-28 04:22:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485254487] [2024-11-28 04:22:33,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:33,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:33,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485254487] [2024-11-28 04:22:33,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485254487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:33,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606127505] [2024-11-28 04:22:33,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:33,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:33,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:22:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:34,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:22:34,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:34,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:22:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:34,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606127505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:22:34,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:22:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 04:22:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557143189] [2024-11-28 04:22:34,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:22:34,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:22:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:34,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:22:34,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:22:34,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-28 04:22:34,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 226 flow. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:34,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:34,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-28 04:22:34,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:37,006 INFO L124 PetriNetUnfolderBase]: 10490/18148 cut-off events. [2024-11-28 04:22:37,007 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-11-28 04:22:37,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32934 conditions, 18148 events. 10490/18148 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 148727 event pairs, 8602 based on Foata normal form. 0/11073 useless extension candidates. Maximal degree in co-relation 32821. Up to 14418 conditions per place. [2024-11-28 04:22:37,127 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-28 04:22:37,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 464 flow [2024-11-28 04:22:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:22:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:22:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-11-28 04:22:37,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2024-11-28 04:22:37,131 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 226 flow. Second operand 10 states and 376 transitions. [2024-11-28 04:22:37,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 464 flow [2024-11-28 04:22:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:22:37,135 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 388 flow [2024-11-28 04:22:37,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=388, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-11-28 04:22:37,137 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-11-28 04:22:37,137 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 388 flow [2024-11-28 04:22:37,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:37,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:37,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:37,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:22:37,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 04:22:37,342 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:37,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1962108024, now seen corresponding path program 1 times [2024-11-28 04:22:37,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:37,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691526154] [2024-11-28 04:22:37,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:37,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691526154] [2024-11-28 04:22:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691526154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:37,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:22:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722525564] [2024-11-28 04:22:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:37,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:37,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:37,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:37,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-11-28 04:22:37,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:37,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:37,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-11-28 04:22:37,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:40,353 INFO L124 PetriNetUnfolderBase]: 10490/18164 cut-off events. [2024-11-28 04:22:40,354 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-11-28 04:22:40,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33033 conditions, 18164 events. 10490/18164 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 148790 event pairs, 8602 based on Foata normal form. 4/11098 useless extension candidates. Maximal degree in co-relation 32943. Up to 14433 conditions per place. [2024-11-28 04:22:40,455 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 76 selfloop transitions, 12 changer transitions 0/116 dead transitions. [2024-11-28 04:22:40,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 634 flow [2024-11-28 04:22:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:22:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:22:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-11-28 04:22:40,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463265306122449 [2024-11-28 04:22:40,460 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 388 flow. Second operand 5 states and 227 transitions. [2024-11-28 04:22:40,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 634 flow [2024-11-28 04:22:40,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 116 transitions, 551 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-28 04:22:40,469 INFO L231 Difference]: Finished difference. Result has 99 places, 115 transitions, 441 flow [2024-11-28 04:22:40,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2024-11-28 04:22:40,473 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 7 predicate places. [2024-11-28 04:22:40,473 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 441 flow [2024-11-28 04:22:40,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:40,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:40,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:40,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:22:40,474 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:40,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash 181759265, now seen corresponding path program 1 times [2024-11-28 04:22:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889699810] [2024-11-28 04:22:40,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:22:40,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:40,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889699810] [2024-11-28 04:22:40,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889699810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:40,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:40,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:22:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488936313] [2024-11-28 04:22:40,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:40,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:22:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:40,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:22:40,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:22:40,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2024-11-28 04:22:40,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:40,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:40,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2024-11-28 04:22:40,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:44,390 INFO L124 PetriNetUnfolderBase]: 17375/29204 cut-off events. [2024-11-28 04:22:44,391 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-11-28 04:22:44,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53823 conditions, 29204 events. 17375/29204 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 241306 event pairs, 12164 based on Foata normal form. 0/18905 useless extension candidates. Maximal degree in co-relation 53732. Up to 15572 conditions per place. [2024-11-28 04:22:44,509 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 179 selfloop transitions, 12 changer transitions 0/218 dead transitions. [2024-11-28 04:22:44,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 218 transitions, 1041 flow [2024-11-28 04:22:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:22:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:22:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-11-28 04:22:44,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-28 04:22:44,512 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 441 flow. Second operand 6 states and 354 transitions. [2024-11-28 04:22:44,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 218 transitions, 1041 flow [2024-11-28 04:22:44,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 218 transitions, 1037 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:22:44,519 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 488 flow [2024-11-28 04:22:44,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=488, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2024-11-28 04:22:44,520 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 14 predicate places. [2024-11-28 04:22:44,520 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 488 flow [2024-11-28 04:22:44,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:44,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:44,521 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:44,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:22:44,521 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:44,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1339571805, now seen corresponding path program 1 times [2024-11-28 04:22:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:44,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798505121] [2024-11-28 04:22:44,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:22:44,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798505121] [2024-11-28 04:22:44,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798505121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:44,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:44,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:22:44,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274079990] [2024-11-28 04:22:44,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:44,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:44,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:44,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:44,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:44,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-11-28 04:22:44,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:44,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:44,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-11-28 04:22:44,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:49,794 INFO L124 PetriNetUnfolderBase]: 31437/50167 cut-off events. [2024-11-28 04:22:49,794 INFO L125 PetriNetUnfolderBase]: For 3448/3592 co-relation queries the response was YES. [2024-11-28 04:22:49,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102157 conditions, 50167 events. 31437/50167 cut-off events. For 3448/3592 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 404082 event pairs, 15764 based on Foata normal form. 772/34478 useless extension candidates. Maximal degree in co-relation 102060. Up to 26896 conditions per place. [2024-11-28 04:22:50,017 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 164 selfloop transitions, 5 changer transitions 0/196 dead transitions. [2024-11-28 04:22:50,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 196 transitions, 1006 flow [2024-11-28 04:22:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:22:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-11-28 04:22:50,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-28 04:22:50,019 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 488 flow. Second operand 4 states and 256 transitions. [2024-11-28 04:22:50,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 196 transitions, 1006 flow [2024-11-28 04:22:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 196 transitions, 990 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:22:50,243 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 515 flow [2024-11-28 04:22:50,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=515, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2024-11-28 04:22:50,244 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2024-11-28 04:22:50,244 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 515 flow [2024-11-28 04:22:50,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:50,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:50,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:50,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:22:50,245 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:50,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 946676979, now seen corresponding path program 1 times [2024-11-28 04:22:50,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:50,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381257671] [2024-11-28 04:22:50,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:50,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381257671] [2024-11-28 04:22:50,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381257671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769070252] [2024-11-28 04:22:50,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:50,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:50,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:50,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:22:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:50,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:22:50,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:50,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:22:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769070252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:22:50,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:22:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-28 04:22:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672403316] [2024-11-28 04:22:50,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:22:50,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:22:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:50,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:22:50,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:22:50,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-28 04:22:50,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 515 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:50,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:50,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-28 04:22:50,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:57,665 INFO L124 PetriNetUnfolderBase]: 34202/59860 cut-off events. [2024-11-28 04:22:57,665 INFO L125 PetriNetUnfolderBase]: For 20806/21610 co-relation queries the response was YES. [2024-11-28 04:22:57,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125855 conditions, 59860 events. 34202/59860 cut-off events. For 20806/21610 co-relation queries the response was YES. Maximal size of possible extension queue 2277. Compared 557799 event pairs, 25616 based on Foata normal form. 740/41978 useless extension candidates. Maximal degree in co-relation 125724. Up to 38526 conditions per place. [2024-11-28 04:22:58,178 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 144 selfloop transitions, 49 changer transitions 0/220 dead transitions. [2024-11-28 04:22:58,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 220 transitions, 1289 flow [2024-11-28 04:22:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:22:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:22:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 543 transitions. [2024-11-28 04:22:58,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39577259475218657 [2024-11-28 04:22:58,180 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 515 flow. Second operand 14 states and 543 transitions. [2024-11-28 04:22:58,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 220 transitions, 1289 flow [2024-11-28 04:22:58,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 220 transitions, 1280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:22:58,215 INFO L231 Difference]: Finished difference. Result has 124 places, 141 transitions, 769 flow [2024-11-28 04:22:58,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=769, PETRI_PLACES=124, PETRI_TRANSITIONS=141} [2024-11-28 04:22:58,216 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 32 predicate places. [2024-11-28 04:22:58,216 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 141 transitions, 769 flow [2024-11-28 04:22:58,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:58,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:58,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:58,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:22:58,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_185478ee-6e5b-41f9-b428-94ec702da052/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:58,422 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-28 04:22:58,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash 823448026, now seen corresponding path program 1 times [2024-11-28 04:22:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:58,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949684274] [2024-11-28 04:22:58,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:22:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949684274] [2024-11-28 04:22:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949684274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:58,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:22:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900586002] [2024-11-28 04:22:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:58,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:22:58,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:58,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:22:58,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:22:58,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-11-28 04:22:58,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 141 transitions, 769 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:58,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:58,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-11-28 04:22:58,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand