./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-context1.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_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/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_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/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_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:20:11,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:20:11,818 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:20:11,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:20:11,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:20:11,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:20:11,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:20:11,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:20:11,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:20:11,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:20:11,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:20:11,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:20:11,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:20:11,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:20:11,880 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:20:11,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:20:11,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:20:11,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:20:11,882 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:20:11,882 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:20:11,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:20:11,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:20:11,882 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:20:11,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:20:11,882 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:11,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:11,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:11,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:20:11,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:20:11,884 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_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/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 -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2024-11-28 05:20:12,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:20:12,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:20:12,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:20:12,277 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:20:12,277 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:20:12,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2024-11-28 05:20:15,381 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/data/0e563578d/97bc2f47f72c434cb30513e00a222be9/FLAGd0adeee47 [2024-11-28 05:20:15,771 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:20:15,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-11-28 05:20:15,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/data/0e563578d/97bc2f47f72c434cb30513e00a222be9/FLAGd0adeee47 [2024-11-28 05:20:15,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/data/0e563578d/97bc2f47f72c434cb30513e00a222be9 [2024-11-28 05:20:15,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:20:15,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:20:15,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:15,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:20:15,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:20:15,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:15" (1/1) ... [2024-11-28 05:20:15,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174aeba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:15, skipping insertion in model container [2024-11-28 05:20:15,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:15" (1/1) ... [2024-11-28 05:20:15,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:20:16,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:16,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:20:16,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:16,168 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:20:16,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16 WrapperNode [2024-11-28 05:20:16,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:16,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:16,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:20:16,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:20:16,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,236 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 144 [2024-11-28 05:20:16,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:16,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:20:16,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:20:16,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:20:16,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,284 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 05:20:16,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,295 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:20:16,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:20:16,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:20:16,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:20:16,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (1/1) ... [2024-11-28 05:20:16,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:16,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:16,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:20:16,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:20:16,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:20:16,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:20:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 05:20:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 05:20:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:20:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:20:16,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:20:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:20:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:20:16,402 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 05:20:16,533 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:20:16,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:20:17,015 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:20:17,015 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:20:17,377 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:20:17,378 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 05:20:17,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:17 BoogieIcfgContainer [2024-11-28 05:20:17,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:20:17,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:20:17,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:20:17,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:20:17,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:20:15" (1/3) ... [2024-11-28 05:20:17,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3921a388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:17, skipping insertion in model container [2024-11-28 05:20:17,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:16" (2/3) ... [2024-11-28 05:20:17,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3921a388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:17, skipping insertion in model container [2024-11-28 05:20:17,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:17" (3/3) ... [2024-11-28 05:20:17,391 INFO L128 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2024-11-28 05:20:17,409 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:20:17,412 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-context1.wvr.c that has 3 procedures, 38 locations, 1 initial locations, 3 loop locations, and 14 error locations. [2024-11-28 05:20:17,412 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:20:17,551 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:20:17,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 98 flow [2024-11-28 05:20:17,631 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2024-11-28 05:20:17,634 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:20:17,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 5/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 103 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-28 05:20:17,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 98 flow [2024-11-28 05:20:17,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 38 transitions, 85 flow [2024-11-28 05:20:17,666 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:20:17,685 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;@66df8596, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:20:17,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-28 05:20:17,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:20:17,693 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 05:20:17,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:20:17,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:17,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:20:17,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:17,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash 505927, now seen corresponding path program 1 times [2024-11-28 05:20:17,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:17,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887387607] [2024-11-28 05:20:17,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:17,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:18,033 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 05:20:18,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887387607] [2024-11-28 05:20:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887387607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:18,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45761065] [2024-11-28 05:20:18,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:18,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:18,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:18,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:18,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:18,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-11-28 05:20:18,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 05:20:18,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:18,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-11-28 05:20:18,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:18,522 INFO L124 PetriNetUnfolderBase]: 264/457 cut-off events. [2024-11-28 05:20:18,523 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 05:20:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 457 events. 264/457 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1912 event pairs, 224 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 885. Up to 450 conditions per place. [2024-11-28 05:20:18,536 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-11-28 05:20:18,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 119 flow [2024-11-28 05:20:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:20:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-28 05:20:18,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2024-11-28 05:20:18,557 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 85 flow. Second operand 4 states and 55 transitions. [2024-11-28 05:20:18,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 119 flow [2024-11-28 05:20:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:18,569 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-11-28 05:20:18,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-28 05:20:18,576 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-11-28 05:20:18,577 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-11-28 05:20:18,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 05:20:18,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:18,578 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:20:18,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:20:18,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:18,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash 15684211, now seen corresponding path program 1 times [2024-11-28 05:20:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612127169] [2024-11-28 05:20:18,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:18,760 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 05:20:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612127169] [2024-11-28 05:20:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612127169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:18,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:18,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032866722] [2024-11-28 05:20:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:18,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:18,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:18,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:18,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-11-28 05:20:18,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 05:20:18,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:18,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-11-28 05:20:18,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:19,043 INFO L124 PetriNetUnfolderBase]: 265/461 cut-off events. [2024-11-28 05:20:19,043 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 05:20:19,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 461 events. 265/461 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1920 event pairs, 224 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 920. Up to 455 conditions per place. [2024-11-28 05:20:19,052 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-28 05:20:19,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 140 flow [2024-11-28 05:20:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:20:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-11-28 05:20:19,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2024-11-28 05:20:19,055 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 4 states and 50 transitions. [2024-11-28 05:20:19,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 140 flow [2024-11-28 05:20:19,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:19,059 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 89 flow [2024-11-28 05:20:19,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-11-28 05:20:19,060 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-28 05:20:19,060 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 89 flow [2024-11-28 05:20:19,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 05:20:19,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:19,061 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 05:20:19,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:20:19,061 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:19,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash -902614562, now seen corresponding path program 1 times [2024-11-28 05:20:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718963774] [2024-11-28 05:20:19,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:19,265 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 05:20:19,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718963774] [2024-11-28 05:20:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718963774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148226226] [2024-11-28 05:20:19,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:19,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:19,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:19,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:20:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:19,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:20:19,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:19,434 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 05:20:19,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:19,521 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 05:20:19,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148226226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:19,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:19,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 05:20:19,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63413129] [2024-11-28 05:20:19,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:19,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:20:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:19,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:20:19,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:20:19,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-11-28 05:20:19,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 89 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 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 05:20:19,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:19,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-11-28 05:20:19,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:19,861 INFO L124 PetriNetUnfolderBase]: 268/473 cut-off events. [2024-11-28 05:20:19,862 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 05:20:19,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 473 events. 268/473 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2021 event pairs, 224 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 927. Up to 458 conditions per place. [2024-11-28 05:20:19,873 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2024-11-28 05:20:19,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 201 flow [2024-11-28 05:20:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:20:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:20:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-11-28 05:20:19,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.21666666666666667 [2024-11-28 05:20:19,878 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 89 flow. Second operand 10 states and 91 transitions. [2024-11-28 05:20:19,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 201 flow [2024-11-28 05:20:19,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:20:19,882 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 166 flow [2024-11-28 05:20:19,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-28 05:20:19,884 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-28 05:20:19,885 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 166 flow [2024-11-28 05:20:19,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 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 05:20:19,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:19,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:19,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:20:20,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:20,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:20,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash -810065035, now seen corresponding path program 1 times [2024-11-28 05:20:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526323939] [2024-11-28 05:20:20,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:20,196 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 05:20:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526323939] [2024-11-28 05:20:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526323939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:20,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:20,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:20:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484188153] [2024-11-28 05:20:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:20,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:20,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:20,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:20,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:20,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 05:20:20,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:20,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:20,422 INFO L124 PetriNetUnfolderBase]: 357/636 cut-off events. [2024-11-28 05:20:20,422 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 05:20:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 636 events. 357/636 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2777 event pairs, 149 based on Foata normal form. 15/451 useless extension candidates. Maximal degree in co-relation 1308. Up to 425 conditions per place. [2024-11-28 05:20:20,429 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 47 selfloop transitions, 2 changer transitions 3/56 dead transitions. [2024-11-28 05:20:20,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 303 flow [2024-11-28 05:20:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:20:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-28 05:20:20,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-28 05:20:20,431 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 166 flow. Second operand 3 states and 66 transitions. [2024-11-28 05:20:20,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 303 flow [2024-11-28 05:20:20,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 273 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:20,435 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 156 flow [2024-11-28 05:20:20,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-28 05:20:20,436 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-28 05:20:20,436 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 156 flow [2024-11-28 05:20:20,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 05:20:20,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:20,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:20,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:20:20,437 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:20,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash -810065041, now seen corresponding path program 1 times [2024-11-28 05:20:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:20,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740267714] [2024-11-28 05:20:20,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:20,545 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 05:20:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740267714] [2024-11-28 05:20:20,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740267714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:20,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:20:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204364285] [2024-11-28 05:20:20,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:20,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:20,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:20,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:20,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 05:20:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:20,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:20,781 INFO L124 PetriNetUnfolderBase]: 342/609 cut-off events. [2024-11-28 05:20:20,781 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-28 05:20:20,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 609 events. 342/609 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2651 event pairs, 134 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 1377. Up to 425 conditions per place. [2024-11-28 05:20:20,787 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 46 selfloop transitions, 2 changer transitions 3/55 dead transitions. [2024-11-28 05:20:20,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 287 flow [2024-11-28 05:20:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:20:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-28 05:20:20,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-11-28 05:20:20,793 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 156 flow. Second operand 3 states and 61 transitions. [2024-11-28 05:20:20,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 287 flow [2024-11-28 05:20:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:20:20,800 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 162 flow [2024-11-28 05:20:20,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-11-28 05:20:20,801 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-28 05:20:20,801 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 162 flow [2024-11-28 05:20:20,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 05:20:20,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:20,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:20,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:20:20,802 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:20,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash -810065040, now seen corresponding path program 1 times [2024-11-28 05:20:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:20,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535364418] [2024-11-28 05:20:20,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:20,942 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 05:20:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535364418] [2024-11-28 05:20:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535364418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:20:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570788058] [2024-11-28 05:20:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:20,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:20,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:20,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:20,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:20,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 05:20:20,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:20,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:20,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:21,127 INFO L124 PetriNetUnfolderBase]: 327/582 cut-off events. [2024-11-28 05:20:21,127 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-28 05:20:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 582 events. 327/582 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2500 event pairs, 119 based on Foata normal form. 12/458 useless extension candidates. Maximal degree in co-relation 1352. Up to 425 conditions per place. [2024-11-28 05:20:21,132 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 45 selfloop transitions, 2 changer transitions 3/54 dead transitions. [2024-11-28 05:20:21,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 289 flow [2024-11-28 05:20:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:20:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-28 05:20:21,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-28 05:20:21,136 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 162 flow. Second operand 3 states and 60 transitions. [2024-11-28 05:20:21,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 289 flow [2024-11-28 05:20:21,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:20:21,141 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 166 flow [2024-11-28 05:20:21,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-28 05:20:21,144 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-28 05:20:21,144 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 166 flow [2024-11-28 05:20:21,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 05:20:21,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:21,146 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:21,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:20:21,147 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:21,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash 774317812, now seen corresponding path program 1 times [2024-11-28 05:20:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416050844] [2024-11-28 05:20:21,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:21,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416050844] [2024-11-28 05:20:21,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416050844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:21,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:21,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:21,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975968466] [2024-11-28 05:20:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:21,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:21,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:21,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:21,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:21,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:21,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 05:20:21,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:21,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:21,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:21,402 INFO L124 PetriNetUnfolderBase]: 301/538 cut-off events. [2024-11-28 05:20:21,402 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-28 05:20:21,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 538 events. 301/538 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2289 event pairs, 261 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 1268. Up to 529 conditions per place. [2024-11-28 05:20:21,406 INFO L140 encePairwiseOnDemand]: 40/42 looper letters, 36 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-28 05:20:21,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 236 flow [2024-11-28 05:20:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:20:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-28 05:20:21,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-28 05:20:21,408 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 166 flow. Second operand 3 states and 46 transitions. [2024-11-28 05:20:21,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 236 flow [2024-11-28 05:20:21,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:20:21,410 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 160 flow [2024-11-28 05:20:21,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-11-28 05:20:21,413 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-28 05:20:21,413 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 160 flow [2024-11-28 05:20:21,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 05:20:21,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:21,414 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:21,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:20:21,414 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:21,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:21,415 INFO L85 PathProgramCache]: Analyzing trace with hash 774317813, now seen corresponding path program 1 times [2024-11-28 05:20:21,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:21,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152284492] [2024-11-28 05:20:21,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:21,511 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 05:20:21,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152284492] [2024-11-28 05:20:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152284492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459701980] [2024-11-28 05:20:21,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:21,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:21,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:21,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:21,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:20:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:21,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:20:21,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:21,661 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 05:20:21,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:21,707 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 05:20:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459701980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:21,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-28 05:20:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68211763] [2024-11-28 05:20:21,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:21,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:20:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:21,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:20:21,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:20:21,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:21,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:20:21,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:21,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:21,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:22,153 INFO L124 PetriNetUnfolderBase]: 900/1569 cut-off events. [2024-11-28 05:20:22,153 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-11-28 05:20:22,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3659 conditions, 1569 events. 900/1569 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7485 event pairs, 196 based on Foata normal form. 15/1309 useless extension candidates. Maximal degree in co-relation 3643. Up to 385 conditions per place. [2024-11-28 05:20:22,164 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 92 selfloop transitions, 8 changer transitions 3/107 dead transitions. [2024-11-28 05:20:22,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 107 transitions, 546 flow [2024-11-28 05:20:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:20:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:20:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-11-28 05:20:22,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-11-28 05:20:22,167 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 160 flow. Second operand 6 states and 142 transitions. [2024-11-28 05:20:22,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 107 transitions, 546 flow [2024-11-28 05:20:22,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 107 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:20:22,175 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 239 flow [2024-11-28 05:20:22,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-28 05:20:22,176 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-11-28 05:20:22,176 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 239 flow [2024-11-28 05:20:22,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:20:22,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:22,177 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:22,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:20:22,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:22,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:22,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash 774317806, now seen corresponding path program 1 times [2024-11-28 05:20:22,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:22,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823395382] [2024-11-28 05:20:22,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:22,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:22,484 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 05:20:22,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:22,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823395382] [2024-11-28 05:20:22,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823395382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:22,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053450537] [2024-11-28 05:20:22,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:22,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:22,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:22,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:22,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:20:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:22,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:20:22,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:22,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:20:22,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053450537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:22,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:20:22,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-28 05:20:22,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996094178] [2024-11-28 05:20:22,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:22,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:22,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:22,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:22,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:20:22,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:22,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 05:20:22,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:22,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:22,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:23,050 INFO L124 PetriNetUnfolderBase]: 1040/1773 cut-off events. [2024-11-28 05:20:23,050 INFO L125 PetriNetUnfolderBase]: For 1782/1782 co-relation queries the response was YES. [2024-11-28 05:20:23,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4813 conditions, 1773 events. 1040/1773 cut-off events. For 1782/1782 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8279 event pairs, 360 based on Foata normal form. 96/1653 useless extension candidates. Maximal degree in co-relation 4792. Up to 1109 conditions per place. [2024-11-28 05:20:23,064 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 50 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-11-28 05:20:23,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 442 flow [2024-11-28 05:20:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:20:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-11-28 05:20:23,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-11-28 05:20:23,066 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 239 flow. Second operand 4 states and 71 transitions. [2024-11-28 05:20:23,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 442 flow [2024-11-28 05:20:23,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:20:23,073 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 342 flow [2024-11-28 05:20:23,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-11-28 05:20:23,075 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-11-28 05:20:23,075 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 342 flow [2024-11-28 05:20:23,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 05:20:23,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:23,075 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:23,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:23,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:23,276 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:23,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:23,276 INFO L85 PathProgramCache]: Analyzing trace with hash 774317807, now seen corresponding path program 1 times [2024-11-28 05:20:23,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:23,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770552725] [2024-11-28 05:20:23,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:23,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:23,337 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 05:20:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770552725] [2024-11-28 05:20:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770552725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968893059] [2024-11-28 05:20:23,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:23,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:23,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:23,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:23,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:20:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:23,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:20:23,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:23,507 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 05:20:23,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:23,541 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 05:20:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968893059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:23,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:23,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-28 05:20:23,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478174101] [2024-11-28 05:20:23,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:23,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:20:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:23,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:20:23,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:20:23,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:23,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:20:23,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:23,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:23,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:24,233 INFO L124 PetriNetUnfolderBase]: 1824/3102 cut-off events. [2024-11-28 05:20:24,233 INFO L125 PetriNetUnfolderBase]: For 6827/6827 co-relation queries the response was YES. [2024-11-28 05:20:24,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 3102 events. 1824/3102 cut-off events. For 6827/6827 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16230 event pairs, 333 based on Foata normal form. 247/2910 useless extension candidates. Maximal degree in co-relation 8860. Up to 1357 conditions per place. [2024-11-28 05:20:24,254 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 99 selfloop transitions, 18 changer transitions 18/139 dead transitions. [2024-11-28 05:20:24,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 139 transitions, 992 flow [2024-11-28 05:20:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:20:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:20:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-11-28 05:20:24,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-28 05:20:24,256 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 342 flow. Second operand 8 states and 170 transitions. [2024-11-28 05:20:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 139 transitions, 992 flow [2024-11-28 05:20:24,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 139 transitions, 953 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-28 05:20:24,267 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 600 flow [2024-11-28 05:20:24,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=600, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-11-28 05:20:24,267 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-11-28 05:20:24,268 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 600 flow [2024-11-28 05:20:24,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:20:24,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:24,268 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 05:20:24,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:20:24,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:20:24,469 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:24,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1993622195, now seen corresponding path program 2 times [2024-11-28 05:20:24,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931869730] [2024-11-28 05:20:24,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:20:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:24,488 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:20:24,488 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:20:24,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931869730] [2024-11-28 05:20:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931869730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910891154] [2024-11-28 05:20:24,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:20:24,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:24,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:24,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:24,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:20:24,630 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:20:24,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:24,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:20:24,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:20:24,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:20:24,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910891154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:24,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:24,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 05:20:24,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097096924] [2024-11-28 05:20:24,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:24,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:24,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:24,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:24,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:24,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-11-28 05:20:24,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 600 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 05:20:24,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:24,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-11-28 05:20:24,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:25,248 INFO L124 PetriNetUnfolderBase]: 1824/3101 cut-off events. [2024-11-28 05:20:25,249 INFO L125 PetriNetUnfolderBase]: For 9083/9083 co-relation queries the response was YES. [2024-11-28 05:20:25,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9767 conditions, 3101 events. 1824/3101 cut-off events. For 9083/9083 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16941 event pairs, 1563 based on Foata normal form. 1/2663 useless extension candidates. Maximal degree in co-relation 9736. Up to 3083 conditions per place. [2024-11-28 05:20:25,278 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 47 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-11-28 05:20:25,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 716 flow [2024-11-28 05:20:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:20:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-28 05:20:25,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2619047619047619 [2024-11-28 05:20:25,280 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 600 flow. Second operand 4 states and 44 transitions. [2024-11-28 05:20:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 716 flow [2024-11-28 05:20:25,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 690 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-28 05:20:25,310 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 596 flow [2024-11-28 05:20:25,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=596, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-11-28 05:20:25,311 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-11-28 05:20:25,311 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 596 flow [2024-11-28 05:20:25,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 05:20:25,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:25,311 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2024-11-28 05:20:25,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:25,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:20:25,512 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:25,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1698045258, now seen corresponding path program 2 times [2024-11-28 05:20:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:25,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32081395] [2024-11-28 05:20:25,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:20:25,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:25,539 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:20:25,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 05:20:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32081395] [2024-11-28 05:20:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32081395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:25,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306176223] [2024-11-28 05:20:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:25,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:25,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:25,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:25,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:25,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 05:20:25,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:25,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:25,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:26,294 INFO L124 PetriNetUnfolderBase]: 2219/3825 cut-off events. [2024-11-28 05:20:26,294 INFO L125 PetriNetUnfolderBase]: For 10107/10107 co-relation queries the response was YES. [2024-11-28 05:20:26,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11454 conditions, 3825 events. 2219/3825 cut-off events. For 10107/10107 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 21592 event pairs, 1947 based on Foata normal form. 56/3323 useless extension candidates. Maximal degree in co-relation 11426. Up to 3091 conditions per place. [2024-11-28 05:20:26,333 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 60 selfloop transitions, 2 changer transitions 19/84 dead transitions. [2024-11-28 05:20:26,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 840 flow [2024-11-28 05:20:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:20:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-11-28 05:20:26,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-28 05:20:26,335 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 596 flow. Second operand 4 states and 70 transitions. [2024-11-28 05:20:26,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 840 flow [2024-11-28 05:20:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 808 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:26,364 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 574 flow [2024-11-28 05:20:26,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-11-28 05:20:26,365 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 29 predicate places. [2024-11-28 05:20:26,367 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 574 flow [2024-11-28 05:20:26,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 05:20:26,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:26,367 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:26,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:20:26,368 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:26,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash 459530219, now seen corresponding path program 1 times [2024-11-28 05:20:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296287136] [2024-11-28 05:20:26,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:26,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296287136] [2024-11-28 05:20:26,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296287136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135905693] [2024-11-28 05:20:26,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:26,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:26,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:26,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:20:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:26,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:20:26,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:26,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135905693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:26,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:26,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 05:20:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307764264] [2024-11-28 05:20:26,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:26,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:20:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:26,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:20:26,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:20:26,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:26,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 574 flow. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 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 05:20:26,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:26,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:26,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:28,443 INFO L124 PetriNetUnfolderBase]: 5578/9426 cut-off events. [2024-11-28 05:20:28,444 INFO L125 PetriNetUnfolderBase]: For 39510/39510 co-relation queries the response was YES. [2024-11-28 05:20:28,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29268 conditions, 9426 events. 5578/9426 cut-off events. For 39510/39510 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 55587 event pairs, 1581 based on Foata normal form. 646/8733 useless extension candidates. Maximal degree in co-relation 29239. Up to 1721 conditions per place. [2024-11-28 05:20:28,522 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 188 selfloop transitions, 75 changer transitions 3/269 dead transitions. [2024-11-28 05:20:28,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 269 transitions, 2455 flow [2024-11-28 05:20:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:20:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:20:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2024-11-28 05:20:28,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-28 05:20:28,525 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 574 flow. Second operand 12 states and 287 transitions. [2024-11-28 05:20:28,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 269 transitions, 2455 flow [2024-11-28 05:20:28,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 269 transitions, 2429 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:28,568 INFO L231 Difference]: Finished difference. Result has 86 places, 123 transitions, 1677 flow [2024-11-28 05:20:28,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1677, PETRI_PLACES=86, PETRI_TRANSITIONS=123} [2024-11-28 05:20:28,569 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-11-28 05:20:28,569 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 123 transitions, 1677 flow [2024-11-28 05:20:28,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 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 05:20:28,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:28,569 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:28,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:20:28,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:20:28,770 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:28,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash -239446823, now seen corresponding path program 1 times [2024-11-28 05:20:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746551531] [2024-11-28 05:20:28,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:20:28,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:28,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746551531] [2024-11-28 05:20:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746551531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:28,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534469105] [2024-11-28 05:20:28,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:28,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:28,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:28,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:28,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:20:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:28,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:20:28,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:20:29,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:20:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534469105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:29,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:29,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2024-11-28 05:20:29,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043535271] [2024-11-28 05:20:29,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:29,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:20:29,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:29,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:20:29,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:20:29,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-11-28 05:20:29,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 123 transitions, 1677 flow. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 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 05:20:29,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:29,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-11-28 05:20:29,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:31,898 INFO L124 PetriNetUnfolderBase]: 9444/16146 cut-off events. [2024-11-28 05:20:31,898 INFO L125 PetriNetUnfolderBase]: For 81010/81010 co-relation queries the response was YES. [2024-11-28 05:20:31,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52532 conditions, 16146 events. 9444/16146 cut-off events. For 81010/81010 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 108390 event pairs, 3912 based on Foata normal form. 545/14322 useless extension candidates. Maximal degree in co-relation 52494. Up to 6962 conditions per place. [2024-11-28 05:20:32,008 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 184 selfloop transitions, 57 changer transitions 11/255 dead transitions. [2024-11-28 05:20:32,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 255 transitions, 3638 flow [2024-11-28 05:20:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:20:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:20:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-11-28 05:20:32,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33095238095238094 [2024-11-28 05:20:32,012 INFO L175 Difference]: Start difference. First operand has 86 places, 123 transitions, 1677 flow. Second operand 10 states and 139 transitions. [2024-11-28 05:20:32,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 255 transitions, 3638 flow [2024-11-28 05:20:32,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 255 transitions, 3426 flow, removed 106 selfloop flow, removed 0 redundant places. [2024-11-28 05:20:32,219 INFO L231 Difference]: Finished difference. Result has 98 places, 156 transitions, 2387 flow [2024-11-28 05:20:32,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2387, PETRI_PLACES=98, PETRI_TRANSITIONS=156} [2024-11-28 05:20:32,220 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-11-28 05:20:32,220 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 156 transitions, 2387 flow [2024-11-28 05:20:32,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 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 05:20:32,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:32,221 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:32,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:32,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:20:32,422 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:32,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1749740308, now seen corresponding path program 1 times [2024-11-28 05:20:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323883716] [2024-11-28 05:20:32,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323883716] [2024-11-28 05:20:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323883716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706502257] [2024-11-28 05:20:32,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:32,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:20:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:32,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:20:32,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:32,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:32,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706502257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:32,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:32,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 13 [2024-11-28 05:20:32,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7055980] [2024-11-28 05:20:32,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:32,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:20:32,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:32,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:20:32,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=109, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:20:32,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:32,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 156 transitions, 2387 flow. Second operand has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 0 states have call successors, (0), 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 05:20:32,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:32,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:32,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:36,656 INFO L124 PetriNetUnfolderBase]: 15649/26741 cut-off events. [2024-11-28 05:20:36,656 INFO L125 PetriNetUnfolderBase]: For 141722/141722 co-relation queries the response was YES. [2024-11-28 05:20:36,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84761 conditions, 26741 events. 15649/26741 cut-off events. For 141722/141722 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 184569 event pairs, 4138 based on Foata normal form. 1539/24216 useless extension candidates. Maximal degree in co-relation 84718. Up to 8918 conditions per place. [2024-11-28 05:20:36,969 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 278 selfloop transitions, 115 changer transitions 36/432 dead transitions. [2024-11-28 05:20:36,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 432 transitions, 5783 flow [2024-11-28 05:20:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:20:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:20:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 290 transitions. [2024-11-28 05:20:36,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2024-11-28 05:20:36,972 INFO L175 Difference]: Start difference. First operand has 98 places, 156 transitions, 2387 flow. Second operand 14 states and 290 transitions. [2024-11-28 05:20:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 432 transitions, 5783 flow [2024-11-28 05:20:37,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 432 transitions, 5776 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:37,297 INFO L231 Difference]: Finished difference. Result has 114 places, 241 transitions, 4106 flow [2024-11-28 05:20:37,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4106, PETRI_PLACES=114, PETRI_TRANSITIONS=241} [2024-11-28 05:20:37,298 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2024-11-28 05:20:37,298 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 241 transitions, 4106 flow [2024-11-28 05:20:37,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 0 states have call successors, (0), 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 05:20:37,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:37,299 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:37,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:37,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:20:37,499 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:37,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash 918854641, now seen corresponding path program 2 times [2024-11-28 05:20:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:37,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117025920] [2024-11-28 05:20:37,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:20:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:37,551 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:20:37,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:37,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:37,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117025920] [2024-11-28 05:20:37,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117025920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:37,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315600830] [2024-11-28 05:20:37,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:20:37,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:37,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:37,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:37,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:20:38,023 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:20:38,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:38,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:20:38,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:38,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:20:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315600830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:38,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:38,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 28 [2024-11-28 05:20:38,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756340238] [2024-11-28 05:20:38,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:38,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 05:20:38,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:38,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 05:20:38,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=470, Unknown=0, NotChecked=0, Total=870 [2024-11-28 05:20:38,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:38,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 241 transitions, 4106 flow. Second operand has 30 states, 30 states have (on average 10.7) internal successors, (321), 30 states have internal predecessors, (321), 0 states have call successors, (0), 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 05:20:38,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:38,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:38,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:51,848 INFO L124 PetriNetUnfolderBase]: 43281/73631 cut-off events. [2024-11-28 05:20:51,848 INFO L125 PetriNetUnfolderBase]: For 846134/846134 co-relation queries the response was YES. [2024-11-28 05:20:52,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240562 conditions, 73631 events. 43281/73631 cut-off events. For 846134/846134 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 522795 event pairs, 10137 based on Foata normal form. 5968/68249 useless extension candidates. Maximal degree in co-relation 240512. Up to 13632 conditions per place. [2024-11-28 05:20:52,349 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 752 selfloop transitions, 434 changer transitions 114/1303 dead transitions. [2024-11-28 05:20:52,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1303 transitions, 19301 flow [2024-11-28 05:20:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 05:20:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-28 05:20:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 829 transitions. [2024-11-28 05:20:52,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.493452380952381 [2024-11-28 05:20:52,354 INFO L175 Difference]: Start difference. First operand has 114 places, 241 transitions, 4106 flow. Second operand 40 states and 829 transitions. [2024-11-28 05:20:52,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1303 transitions, 19301 flow [2024-11-28 05:20:53,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 1303 transitions, 19263 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-28 05:20:53,961 INFO L231 Difference]: Finished difference. Result has 164 places, 547 transitions, 10513 flow [2024-11-28 05:20:53,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4068, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=10513, PETRI_PLACES=164, PETRI_TRANSITIONS=547} [2024-11-28 05:20:53,962 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 124 predicate places. [2024-11-28 05:20:53,962 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 547 transitions, 10513 flow [2024-11-28 05:20:53,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.7) internal successors, (321), 30 states have internal predecessors, (321), 0 states have call successors, (0), 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 05:20:53,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:53,963 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 05:20:53,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:54,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:20:54,164 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:20:54,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash -809091722, now seen corresponding path program 2 times [2024-11-28 05:20:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385861162] [2024-11-28 05:20:54,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:20:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:54,200 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:20:54,201 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-28 05:20:54,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:54,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385861162] [2024-11-28 05:20:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385861162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:20:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510419402] [2024-11-28 05:20:54,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:54,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:54,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:54,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:54,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:54,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-28 05:20:54,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 547 transitions, 10513 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 05:20:54,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:54,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-28 05:20:54,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:12,854 INFO L124 PetriNetUnfolderBase]: 42593/72667 cut-off events. [2024-11-28 05:21:12,854 INFO L125 PetriNetUnfolderBase]: For 572565/572565 co-relation queries the response was YES. [2024-11-28 05:21:13,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245119 conditions, 72667 events. 42593/72667 cut-off events. For 572565/572565 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 534866 event pairs, 37870 based on Foata normal form. 562/61927 useless extension candidates. Maximal degree in co-relation 245054. Up to 72656 conditions per place. [2024-11-28 05:21:13,466 INFO L140 encePairwiseOnDemand]: 40/42 looper letters, 531 selfloop transitions, 1 changer transitions 0/535 dead transitions. [2024-11-28 05:21:13,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 535 transitions, 11097 flow [2024-11-28 05:21:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-28 05:21:13,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2024-11-28 05:21:13,467 INFO L175 Difference]: Start difference. First operand has 164 places, 547 transitions, 10513 flow. Second operand 3 states and 44 transitions. [2024-11-28 05:21:13,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 535 transitions, 11097 flow [2024-11-28 05:21:15,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 535 transitions, 10116 flow, removed 331 selfloop flow, removed 15 redundant places. [2024-11-28 05:21:15,078 INFO L231 Difference]: Finished difference. Result has 150 places, 535 transitions, 9054 flow [2024-11-28 05:21:15,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9052, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=9054, PETRI_PLACES=150, PETRI_TRANSITIONS=535} [2024-11-28 05:21:15,079 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 110 predicate places. [2024-11-28 05:21:15,079 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 535 transitions, 9054 flow [2024-11-28 05:21:15,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 05:21:15,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:15,079 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:15,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:21:15,079 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2024-11-28 05:21:15,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 493120107, now seen corresponding path program 3 times [2024-11-28 05:21:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524751799] [2024-11-28 05:21:15,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:21:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:15,119 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:21:15,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:21:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-28 05:21:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524751799] [2024-11-28 05:21:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524751799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924933058] [2024-11-28 05:21:15,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:21:15,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:15,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:15,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bb3dbd1-5904-48f0-8ad8-6227fd68ad61/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:21:15,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:21:15,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:21:15,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:21:15,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-28 05:21:15,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-28 05:21:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924933058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:21:15,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:21:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2024-11-28 05:21:15,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104927911] [2024-11-28 05:21:15,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:15,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:21:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:15,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:21:15,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:21:15,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-11-28 05:21:15,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 535 transitions, 9054 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 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 05:21:15,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:15,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-11-28 05:21:15,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand