./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:09:59,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:09:59,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 19:09:59,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:09:59,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:09:59,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:09:59,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:09:59,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:09:59,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:09:59,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:09:59,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:09:59,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:09:59,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:09:59,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:09:59,239 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:09:59,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:09:59,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:09:59,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:09:59,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:09:59,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:09:59,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:09:59,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:09:59,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:09:59,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:09:59,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:09:59,248 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 19:09:59,248 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:09:59,249 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:09:59,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:09:59,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:09:59,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:09:59,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:09:59,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:09:59,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:09:59,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:09:59,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:09:59,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:09:59,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:09:59,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:09:59,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:09:59,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:09:59,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:09:59,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:09:59,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:09:59,261 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 [2024-11-08 19:09:59,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:09:59,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:09:59,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:09:59,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:09:59,587 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:09:59,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/fib_safe-6.i Unable to find full path for "g++" [2024-11-08 19:10:01,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:10:01,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:10:01,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/sv-benchmarks/c/pthread/fib_safe-6.i [2024-11-08 19:10:01,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/data/97f70fa26/5f16863758ad4616aed11be15aee6e03/FLAG003635475 [2024-11-08 19:10:01,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/data/97f70fa26/5f16863758ad4616aed11be15aee6e03 [2024-11-08 19:10:01,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:10:01,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:10:01,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:10:01,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:10:02,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:10:02,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:10:01" (1/1) ... [2024-11-08 19:10:02,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45337ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02, skipping insertion in model container [2024-11-08 19:10:02,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:10:01" (1/1) ... [2024-11-08 19:10:02,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:10:02,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:10:02,479 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:10:02,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:10:02,597 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:10:02,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02 WrapperNode [2024-11-08 19:10:02,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:10:02,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:10:02,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:10:02,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:10:02,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,646 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-08 19:10:02,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:10:02,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:10:02,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:10:02,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:10:02,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,676 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:10:02,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:10:02,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:10:02,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:10:02,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:10:02,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (1/1) ... [2024-11-08 19:10:02,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:10:02,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:02,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:10:02,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:10:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-08 19:10:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-08 19:10:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-08 19:10:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-08 19:10:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 19:10:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:10:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:10:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 19:10:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:10:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:10:02,759 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:10:02,891 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:10:02,893 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:10:03,150 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:10:03,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:10:03,323 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:10:03,327 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:10:03,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:03 BoogieIcfgContainer [2024-11-08 19:10:03,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:10:03,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:10:03,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:10:03,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:10:03,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:10:01" (1/3) ... [2024-11-08 19:10:03,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7926f03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:10:03, skipping insertion in model container [2024-11-08 19:10:03,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:10:02" (2/3) ... [2024-11-08 19:10:03,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7926f03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:10:03, skipping insertion in model container [2024-11-08 19:10:03,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:10:03" (3/3) ... [2024-11-08 19:10:03,352 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2024-11-08 19:10:03,406 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:10:03,409 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 19:10:03,410 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:10:03,491 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:10:03,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 19:10:03,589 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-08 19:10:03,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:10:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-08 19:10:03,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 19:10:03,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-08 19:10:03,608 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:10:03,614 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;@12b77afb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:10:03,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-08 19:10:03,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:10:03,622 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-08 19:10:03,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:10:03,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:03,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:03,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:03,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1278590766, now seen corresponding path program 1 times [2024-11-08 19:10:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630043111] [2024-11-08 19:10:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:03,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630043111] [2024-11-08 19:10:03,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630043111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:03,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257606132] [2024-11-08 19:10:03,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:04,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:04,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:04,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:04,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:04,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:04,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:04,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:04,554 INFO L124 PetriNetUnfolderBase]: 702/1468 cut-off events. [2024-11-08 19:10:04,554 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-08 19:10:04,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 1468 events. 702/1468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9704 event pairs, 156 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 2471. Up to 514 conditions per place. [2024-11-08 19:10:04,586 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 46 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-08 19:10:04,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 267 flow [2024-11-08 19:10:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:04,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-08 19:10:04,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8066037735849056 [2024-11-08 19:10:04,603 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 171 transitions. [2024-11-08 19:10:04,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 267 flow [2024-11-08 19:10:04,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:10:04,615 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 137 flow [2024-11-08 19:10:04,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-11-08 19:10:04,621 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-08 19:10:04,624 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 137 flow [2024-11-08 19:10:04,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:04,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:04,625 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:04,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:10:04,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:04,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:04,627 INFO L85 PathProgramCache]: Analyzing trace with hash -365068075, now seen corresponding path program 1 times [2024-11-08 19:10:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:04,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562155638] [2024-11-08 19:10:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562155638] [2024-11-08 19:10:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562155638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:04,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:04,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:04,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843309715] [2024-11-08 19:10:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:04,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:04,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 19:10:04,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:04,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:04,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 19:10:04,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:05,212 INFO L124 PetriNetUnfolderBase]: 1006/1878 cut-off events. [2024-11-08 19:10:05,212 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-08 19:10:05,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 1878 events. 1006/1878 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12595 event pairs, 213 based on Foata normal form. 115/1622 useless extension candidates. Maximal degree in co-relation 3813. Up to 911 conditions per place. [2024-11-08 19:10:05,236 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-08 19:10:05,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 337 flow [2024-11-08 19:10:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-08 19:10:05,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2024-11-08 19:10:05,239 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 137 flow. Second operand 4 states and 166 transitions. [2024-11-08 19:10:05,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 337 flow [2024-11-08 19:10:05,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:10:05,244 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 163 flow [2024-11-08 19:10:05,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-08 19:10:05,245 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-08 19:10:05,245 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 163 flow [2024-11-08 19:10:05,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:05,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:05,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:05,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:10:05,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:05,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1313995110, now seen corresponding path program 1 times [2024-11-08 19:10:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879963129] [2024-11-08 19:10:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:05,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:05,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879963129] [2024-11-08 19:10:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879963129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:05,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:05,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 19:10:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606468675] [2024-11-08 19:10:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:05,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:10:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:10:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:10:05,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 19:10:05,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:05,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:05,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 19:10:05,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:05,788 INFO L124 PetriNetUnfolderBase]: 1258/2779 cut-off events. [2024-11-08 19:10:05,788 INFO L125 PetriNetUnfolderBase]: For 437/594 co-relation queries the response was YES. [2024-11-08 19:10:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 2779 events. 1258/2779 cut-off events. For 437/594 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22184 event pairs, 365 based on Foata normal form. 115/2246 useless extension candidates. Maximal degree in co-relation 5338. Up to 993 conditions per place. [2024-11-08 19:10:05,811 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 19:10:05,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 318 flow [2024-11-08 19:10:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:10:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:10:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 19:10:05,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 19:10:05,815 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 163 flow. Second operand 3 states and 129 transitions. [2024-11-08 19:10:05,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 318 flow [2024-11-08 19:10:05,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:10:05,819 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 173 flow [2024-11-08 19:10:05,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-08 19:10:05,820 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-08 19:10:05,820 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 173 flow [2024-11-08 19:10:05,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:05,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:05,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:05,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:10:05,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:05,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2079142475, now seen corresponding path program 1 times [2024-11-08 19:10:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:05,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519873849] [2024-11-08 19:10:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:05,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:05,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:05,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519873849] [2024-11-08 19:10:05,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519873849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:05,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:05,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 19:10:05,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381667868] [2024-11-08 19:10:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:05,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:10:05,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:05,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:10:05,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:10:05,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 19:10:05,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 19:10:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:06,261 INFO L124 PetriNetUnfolderBase]: 1258/2727 cut-off events. [2024-11-08 19:10:06,262 INFO L125 PetriNetUnfolderBase]: For 561/718 co-relation queries the response was YES. [2024-11-08 19:10:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5500 conditions, 2727 events. 1258/2727 cut-off events. For 561/718 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21469 event pairs, 365 based on Foata normal form. 105/2184 useless extension candidates. Maximal degree in co-relation 5478. Up to 993 conditions per place. [2024-11-08 19:10:06,287 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 19:10:06,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 325 flow [2024-11-08 19:10:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:10:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:10:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 19:10:06,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 19:10:06,289 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 173 flow. Second operand 3 states and 129 transitions. [2024-11-08 19:10:06,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 325 flow [2024-11-08 19:10:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:10:06,293 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 179 flow [2024-11-08 19:10:06,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-08 19:10:06,294 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-08 19:10:06,294 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 179 flow [2024-11-08 19:10:06,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:06,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:06,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:06,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:10:06,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:06,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash 689054452, now seen corresponding path program 1 times [2024-11-08 19:10:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256611689] [2024-11-08 19:10:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256611689] [2024-11-08 19:10:06,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256611689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:06,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:06,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133528330] [2024-11-08 19:10:06,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:06,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:06,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:06,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:06,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 19:10:06,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:06,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:06,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 19:10:06,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:06,992 INFO L124 PetriNetUnfolderBase]: 2378/4389 cut-off events. [2024-11-08 19:10:06,993 INFO L125 PetriNetUnfolderBase]: For 1326/1773 co-relation queries the response was YES. [2024-11-08 19:10:07,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 4389 events. 2378/4389 cut-off events. For 1326/1773 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33182 event pairs, 457 based on Foata normal form. 319/3959 useless extension candidates. Maximal degree in co-relation 9781. Up to 2321 conditions per place. [2024-11-08 19:10:07,029 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 62 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-08 19:10:07,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 419 flow [2024-11-08 19:10:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-08 19:10:07,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7641509433962265 [2024-11-08 19:10:07,030 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 179 flow. Second operand 4 states and 162 transitions. [2024-11-08 19:10:07,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 419 flow [2024-11-08 19:10:07,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:10:07,034 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 201 flow [2024-11-08 19:10:07,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-08 19:10:07,035 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-08 19:10:07,035 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 201 flow [2024-11-08 19:10:07,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:07,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:07,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:07,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:10:07,036 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:07,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash -28907008, now seen corresponding path program 1 times [2024-11-08 19:10:07,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:07,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646152516] [2024-11-08 19:10:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:07,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:07,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646152516] [2024-11-08 19:10:07,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646152516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:07,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487341992] [2024-11-08 19:10:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:07,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:07,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 19:10:07,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:07,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:07,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 19:10:07,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:07,633 INFO L124 PetriNetUnfolderBase]: 1874/3805 cut-off events. [2024-11-08 19:10:07,633 INFO L125 PetriNetUnfolderBase]: For 1100/1645 co-relation queries the response was YES. [2024-11-08 19:10:07,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8659 conditions, 3805 events. 1874/3805 cut-off events. For 1100/1645 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30148 event pairs, 227 based on Foata normal form. 447/3619 useless extension candidates. Maximal degree in co-relation 8633. Up to 2025 conditions per place. [2024-11-08 19:10:07,666 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-08 19:10:07,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 463 flow [2024-11-08 19:10:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-08 19:10:07,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-11-08 19:10:07,668 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 201 flow. Second operand 4 states and 164 transitions. [2024-11-08 19:10:07,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 463 flow [2024-11-08 19:10:07,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:10:07,673 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 221 flow [2024-11-08 19:10:07,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-08 19:10:07,674 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-08 19:10:07,675 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 221 flow [2024-11-08 19:10:07,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:07,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:07,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:07,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:10:07,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:07,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:07,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1399838103, now seen corresponding path program 1 times [2024-11-08 19:10:07,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:07,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633936069] [2024-11-08 19:10:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:07,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633936069] [2024-11-08 19:10:07,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633936069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:07,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:10:07,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66441035] [2024-11-08 19:10:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:07,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:10:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:10:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:10:07,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:07,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:07,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:07,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:07,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:08,265 INFO L124 PetriNetUnfolderBase]: 1452/2999 cut-off events. [2024-11-08 19:10:08,265 INFO L125 PetriNetUnfolderBase]: For 1510/1894 co-relation queries the response was YES. [2024-11-08 19:10:08,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 2999 events. 1452/2999 cut-off events. For 1510/1894 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21996 event pairs, 216 based on Foata normal form. 77/2720 useless extension candidates. Maximal degree in co-relation 7563. Up to 1291 conditions per place. [2024-11-08 19:10:08,294 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 19:10:08,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 521 flow [2024-11-08 19:10:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:10:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:10:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-08 19:10:08,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7886792452830189 [2024-11-08 19:10:08,296 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 221 flow. Second operand 5 states and 209 transitions. [2024-11-08 19:10:08,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 521 flow [2024-11-08 19:10:08,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:10:08,304 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 250 flow [2024-11-08 19:10:08,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-08 19:10:08,305 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-08 19:10:08,305 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 250 flow [2024-11-08 19:10:08,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:08,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:08,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:08,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:10:08,307 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:08,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash 274026820, now seen corresponding path program 1 times [2024-11-08 19:10:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:08,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917623727] [2024-11-08 19:10:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:08,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:08,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917623727] [2024-11-08 19:10:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917623727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:08,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:08,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:10:08,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908822010] [2024-11-08 19:10:08,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:08,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:10:08,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:08,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:10:08,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:10:08,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:08,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:08,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:08,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:08,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:08,809 INFO L124 PetriNetUnfolderBase]: 1238/2571 cut-off events. [2024-11-08 19:10:08,809 INFO L125 PetriNetUnfolderBase]: For 1744/2093 co-relation queries the response was YES. [2024-11-08 19:10:08,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2571 events. 1238/2571 cut-off events. For 1744/2093 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18246 event pairs, 223 based on Foata normal form. 165/2634 useless extension candidates. Maximal degree in co-relation 6893. Up to 849 conditions per place. [2024-11-08 19:10:08,828 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 19:10:08,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 554 flow [2024-11-08 19:10:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:10:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:10:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-11-08 19:10:08,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7773584905660378 [2024-11-08 19:10:08,830 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 250 flow. Second operand 5 states and 206 transitions. [2024-11-08 19:10:08,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 554 flow [2024-11-08 19:10:08,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 539 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:08,837 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 264 flow [2024-11-08 19:10:08,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-08 19:10:08,838 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-08 19:10:08,839 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 264 flow [2024-11-08 19:10:08,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:08,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:08,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:08,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:10:08,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:08,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 274268111, now seen corresponding path program 1 times [2024-11-08 19:10:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:08,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603044144] [2024-11-08 19:10:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:08,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603044144] [2024-11-08 19:10:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603044144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:08,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:08,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:10:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156011546] [2024-11-08 19:10:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:08,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:10:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:10:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:10:08,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:08,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:08,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:08,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:08,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:09,353 INFO L124 PetriNetUnfolderBase]: 1350/2823 cut-off events. [2024-11-08 19:10:09,353 INFO L125 PetriNetUnfolderBase]: For 2689/3052 co-relation queries the response was YES. [2024-11-08 19:10:09,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 2823 events. 1350/2823 cut-off events. For 2689/3052 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20505 event pairs, 279 based on Foata normal form. 119/2938 useless extension candidates. Maximal degree in co-relation 7794. Up to 1236 conditions per place. [2024-11-08 19:10:09,378 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 65 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-11-08 19:10:09,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 576 flow [2024-11-08 19:10:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:10:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:10:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-08 19:10:09,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811320754716982 [2024-11-08 19:10:09,380 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 264 flow. Second operand 5 states and 207 transitions. [2024-11-08 19:10:09,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 576 flow [2024-11-08 19:10:09,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 563 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:09,387 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 316 flow [2024-11-08 19:10:09,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-08 19:10:09,388 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-08 19:10:09,388 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 316 flow [2024-11-08 19:10:09,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:09,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:09,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:09,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 19:10:09,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:09,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 274268110, now seen corresponding path program 1 times [2024-11-08 19:10:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189775411] [2024-11-08 19:10:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:09,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189775411] [2024-11-08 19:10:09,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189775411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:09,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:09,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:10:09,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975229572] [2024-11-08 19:10:09,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:09,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:10:09,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:10:09,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:10:09,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:09,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:09,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:09,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:09,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:09,855 INFO L124 PetriNetUnfolderBase]: 1168/2501 cut-off events. [2024-11-08 19:10:09,856 INFO L125 PetriNetUnfolderBase]: For 3550/3860 co-relation queries the response was YES. [2024-11-08 19:10:09,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 2501 events. 1168/2501 cut-off events. For 3550/3860 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17836 event pairs, 258 based on Foata normal form. 147/2644 useless extension candidates. Maximal degree in co-relation 7154. Up to 1229 conditions per place. [2024-11-08 19:10:09,876 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-08 19:10:09,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 514 flow [2024-11-08 19:10:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:10:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:10:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-08 19:10:09,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283018867924528 [2024-11-08 19:10:09,877 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 316 flow. Second operand 5 states and 193 transitions. [2024-11-08 19:10:09,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 514 flow [2024-11-08 19:10:09,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 496 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:09,885 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 297 flow [2024-11-08 19:10:09,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-11-08 19:10:09,886 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 19:10:09,886 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 297 flow [2024-11-08 19:10:09,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:09,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:09,887 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:09,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 19:10:09,887 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:09,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -286089201, now seen corresponding path program 1 times [2024-11-08 19:10:09,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707871629] [2024-11-08 19:10:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707871629] [2024-11-08 19:10:09,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707871629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321238634] [2024-11-08 19:10:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:09,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:09,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:09,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:09,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:10:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:10,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:10:10,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:10,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:10:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321238634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:10,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:10:10,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 19:10:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832963852] [2024-11-08 19:10:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:10,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:10:10,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:10:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:10:10,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 19:10:10,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:10,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:10,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 19:10:10,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:10,673 INFO L124 PetriNetUnfolderBase]: 1723/3208 cut-off events. [2024-11-08 19:10:10,674 INFO L125 PetriNetUnfolderBase]: For 5090/5563 co-relation queries the response was YES. [2024-11-08 19:10:10,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9675 conditions, 3208 events. 1723/3208 cut-off events. For 5090/5563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22423 event pairs, 325 based on Foata normal form. 141/3245 useless extension candidates. Maximal degree in co-relation 9639. Up to 1368 conditions per place. [2024-11-08 19:10:10,699 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 86 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-08 19:10:10,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 719 flow [2024-11-08 19:10:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:10:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:10:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 19:10:10,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 19:10:10,701 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 297 flow. Second operand 6 states and 226 transitions. [2024-11-08 19:10:10,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 719 flow [2024-11-08 19:10:10,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 710 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:10,709 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 294 flow [2024-11-08 19:10:10,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-08 19:10:10,710 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-08 19:10:10,710 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 294 flow [2024-11-08 19:10:10,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:10,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:10,710 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:10,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:10:10,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 19:10:10,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:10,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1297340425, now seen corresponding path program 1 times [2024-11-08 19:10:10,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:10,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815238683] [2024-11-08 19:10:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:10,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815238683] [2024-11-08 19:10:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815238683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:10,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181121425] [2024-11-08 19:10:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:10,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:10,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:10,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:10,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:10:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:11,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:10:11,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:11,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:10:11,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181121425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:11,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:10:11,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-08 19:10:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360768431] [2024-11-08 19:10:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:11,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:10:11,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 19:10:11,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:11,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:11,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 19:10:11,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:11,532 INFO L124 PetriNetUnfolderBase]: 1168/2762 cut-off events. [2024-11-08 19:10:11,532 INFO L125 PetriNetUnfolderBase]: For 4282/4478 co-relation queries the response was YES. [2024-11-08 19:10:11,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 2762 events. 1168/2762 cut-off events. For 4282/4478 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21829 event pairs, 187 based on Foata normal form. 122/2803 useless extension candidates. Maximal degree in co-relation 7462. Up to 1216 conditions per place. [2024-11-08 19:10:11,558 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 54 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-08 19:10:11,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 537 flow [2024-11-08 19:10:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-08 19:10:11,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2024-11-08 19:10:11,560 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 294 flow. Second operand 4 states and 156 transitions. [2024-11-08 19:10:11,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 537 flow [2024-11-08 19:10:11,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 531 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:11,567 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 289 flow [2024-11-08 19:10:11,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-11-08 19:10:11,568 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 19:10:11,569 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 289 flow [2024-11-08 19:10:11,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:11,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:11,569 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:11,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:10:11,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 19:10:11,770 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:11,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash -278830309, now seen corresponding path program 1 times [2024-11-08 19:10:11,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:11,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852625815] [2024-11-08 19:10:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:11,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:10:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852625815] [2024-11-08 19:10:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852625815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319946537] [2024-11-08 19:10:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:11,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:11,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:10:11,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:11,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:11,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:10:11,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:12,384 INFO L124 PetriNetUnfolderBase]: 2118/3986 cut-off events. [2024-11-08 19:10:12,385 INFO L125 PetriNetUnfolderBase]: For 6443/7287 co-relation queries the response was YES. [2024-11-08 19:10:12,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 3986 events. 2118/3986 cut-off events. For 6443/7287 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29101 event pairs, 1026 based on Foata normal form. 208/4045 useless extension candidates. Maximal degree in co-relation 11880. Up to 1979 conditions per place. [2024-11-08 19:10:12,417 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-11-08 19:10:12,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 611 flow [2024-11-08 19:10:12,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-08 19:10:12,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7122641509433962 [2024-11-08 19:10:12,419 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 289 flow. Second operand 4 states and 151 transitions. [2024-11-08 19:10:12,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 611 flow [2024-11-08 19:10:12,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 602 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:12,431 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 294 flow [2024-11-08 19:10:12,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-08 19:10:12,431 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 19:10:12,432 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 294 flow [2024-11-08 19:10:12,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:12,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:12,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:12,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 19:10:12,433 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:12,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1562847782, now seen corresponding path program 1 times [2024-11-08 19:10:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645090737] [2024-11-08 19:10:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645090737] [2024-11-08 19:10:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645090737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6410316] [2024-11-08 19:10:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:12,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:12,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:12,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:12,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:10:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:12,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:10:12,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:12,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:10:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:12,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6410316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:10:12,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:10:12,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-08 19:10:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028510694] [2024-11-08 19:10:12,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:10:12,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:10:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:10:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:10:12,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:12,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:13,789 INFO L124 PetriNetUnfolderBase]: 3218/7231 cut-off events. [2024-11-08 19:10:13,789 INFO L125 PetriNetUnfolderBase]: For 12411/12871 co-relation queries the response was YES. [2024-11-08 19:10:13,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 7231 events. 3218/7231 cut-off events. For 12411/12871 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 62368 event pairs, 187 based on Foata normal form. 370/7520 useless extension candidates. Maximal degree in co-relation 19366. Up to 1217 conditions per place. [2024-11-08 19:10:13,855 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 129 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-11-08 19:10:13,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 161 transitions, 1142 flow [2024-11-08 19:10:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:10:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:10:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-08 19:10:13,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2024-11-08 19:10:13,857 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 294 flow. Second operand 6 states and 261 transitions. [2024-11-08 19:10:13,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 161 transitions, 1142 flow [2024-11-08 19:10:13,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:10:13,870 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 322 flow [2024-11-08 19:10:13,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2024-11-08 19:10:13,870 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-08 19:10:13,871 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 322 flow [2024-11-08 19:10:13,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:13,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:13,871 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:13,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:10:14,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 19:10:14,076 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:14,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -254368722, now seen corresponding path program 1 times [2024-11-08 19:10:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:14,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657239174] [2024-11-08 19:10:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:14,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:14,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657239174] [2024-11-08 19:10:14,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657239174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:14,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247042648] [2024-11-08 19:10:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:14,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:14,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:14,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:14,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:10:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:14,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:10:14,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:14,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:10:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247042648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:10:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 19:10:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258538659] [2024-11-08 19:10:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:14,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:10:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:10:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:10:14,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 19:10:14,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:14,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:14,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 19:10:14,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:15,715 INFO L124 PetriNetUnfolderBase]: 4393/8099 cut-off events. [2024-11-08 19:10:15,716 INFO L125 PetriNetUnfolderBase]: For 15530/16016 co-relation queries the response was YES. [2024-11-08 19:10:15,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25015 conditions, 8099 events. 4393/8099 cut-off events. For 15530/16016 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 62345 event pairs, 833 based on Foata normal form. 162/8057 useless extension candidates. Maximal degree in co-relation 24976. Up to 3420 conditions per place. [2024-11-08 19:10:15,781 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 92 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-08 19:10:15,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 826 flow [2024-11-08 19:10:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:10:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:10:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-11-08 19:10:15,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2024-11-08 19:10:15,784 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 322 flow. Second operand 6 states and 220 transitions. [2024-11-08 19:10:15,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 826 flow [2024-11-08 19:10:15,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 784 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-08 19:10:15,801 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 316 flow [2024-11-08 19:10:15,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-11-08 19:10:15,802 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 19:10:15,802 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 316 flow [2024-11-08 19:10:15,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:15,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:15,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:15,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:10:16,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 19:10:16,008 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:16,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1203641263, now seen corresponding path program 1 times [2024-11-08 19:10:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059845138] [2024-11-08 19:10:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059845138] [2024-11-08 19:10:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059845138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361839840] [2024-11-08 19:10:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:16,246 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:16,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:10:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:16,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:10:16,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:16,355 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:10:16,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361839840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:16,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:10:16,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 19:10:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890945155] [2024-11-08 19:10:16,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:16,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:10:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:10:16,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:10:16,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 19:10:16,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:16,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:16,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 19:10:16,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:17,375 INFO L124 PetriNetUnfolderBase]: 4130/7910 cut-off events. [2024-11-08 19:10:17,375 INFO L125 PetriNetUnfolderBase]: For 16960/17171 co-relation queries the response was YES. [2024-11-08 19:10:17,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 7910 events. 4130/7910 cut-off events. For 16960/17171 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 62279 event pairs, 187 based on Foata normal form. 228/7829 useless extension candidates. Maximal degree in co-relation 24099. Up to 3952 conditions per place. [2024-11-08 19:10:17,514 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 98 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2024-11-08 19:10:17,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 941 flow [2024-11-08 19:10:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:10:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:10:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 19:10:17,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 19:10:17,516 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 316 flow. Second operand 6 states and 226 transitions. [2024-11-08 19:10:17,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 941 flow [2024-11-08 19:10:17,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 933 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:17,534 INFO L231 Difference]: Finished difference. Result has 89 places, 63 transitions, 323 flow [2024-11-08 19:10:17,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2024-11-08 19:10:17,535 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-08 19:10:17,535 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 323 flow [2024-11-08 19:10:17,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:17,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:17,536 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:17,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:10:17,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 19:10:17,737 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:17,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 704504554, now seen corresponding path program 1 times [2024-11-08 19:10:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:17,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786309977] [2024-11-08 19:10:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:17,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:10:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786309977] [2024-11-08 19:10:17,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786309977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:17,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185132589] [2024-11-08 19:10:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:17,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:17,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:10:17,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:17,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:17,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:10:17,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:18,957 INFO L124 PetriNetUnfolderBase]: 5275/8873 cut-off events. [2024-11-08 19:10:18,957 INFO L125 PetriNetUnfolderBase]: For 16786/17110 co-relation queries the response was YES. [2024-11-08 19:10:18,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29410 conditions, 8873 events. 5275/8873 cut-off events. For 16786/17110 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 65183 event pairs, 2749 based on Foata normal form. 360/8922 useless extension candidates. Maximal degree in co-relation 29371. Up to 5007 conditions per place. [2024-11-08 19:10:19,021 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-08 19:10:19,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 705 flow [2024-11-08 19:10:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-08 19:10:19,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933962264150944 [2024-11-08 19:10:19,023 INFO L175 Difference]: Start difference. First operand has 89 places, 63 transitions, 323 flow. Second operand 4 states and 147 transitions. [2024-11-08 19:10:19,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 705 flow [2024-11-08 19:10:19,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 690 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 19:10:19,055 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 326 flow [2024-11-08 19:10:19,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-11-08 19:10:19,056 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 19:10:19,056 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 326 flow [2024-11-08 19:10:19,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:19,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:19,056 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:19,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 19:10:19,057 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1341826200, now seen corresponding path program 1 times [2024-11-08 19:10:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057675624] [2024-11-08 19:10:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:10:19,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:19,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057675624] [2024-11-08 19:10:19,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057675624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:19,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:10:19,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:10:19,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264380492] [2024-11-08 19:10:19,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:19,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:10:19,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:19,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:10:19,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:10:19,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 19:10:19,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:19,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:19,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 19:10:19,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:20,375 INFO L124 PetriNetUnfolderBase]: 4883/8484 cut-off events. [2024-11-08 19:10:20,375 INFO L125 PetriNetUnfolderBase]: For 22783/22783 co-relation queries the response was YES. [2024-11-08 19:10:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28277 conditions, 8484 events. 4883/8484 cut-off events. For 22783/22783 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 62987 event pairs, 1417 based on Foata normal form. 532/8919 useless extension candidates. Maximal degree in co-relation 28238. Up to 3649 conditions per place. [2024-11-08 19:10:20,422 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-08 19:10:20,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 772 flow [2024-11-08 19:10:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:10:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:10:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-08 19:10:20,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-08 19:10:20,424 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 326 flow. Second operand 4 states and 152 transitions. [2024-11-08 19:10:20,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 772 flow [2024-11-08 19:10:20,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 756 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:20,442 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 332 flow [2024-11-08 19:10:20,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-08 19:10:20,442 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 19:10:20,443 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 332 flow [2024-11-08 19:10:20,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:20,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:20,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:20,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 19:10:20,443 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:20,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash 593073353, now seen corresponding path program 1 times [2024-11-08 19:10:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87729419] [2024-11-08 19:10:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87729419] [2024-11-08 19:10:20,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87729419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000459939] [2024-11-08 19:10:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:20,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:20,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:20,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:10:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:20,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:10:20,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:20,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:10:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:20,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000459939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:10:20,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:10:20,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-08 19:10:20,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369692256] [2024-11-08 19:10:20,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:10:20,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 19:10:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 19:10:20,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-08 19:10:20,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:20,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 332 flow. Second operand has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:20,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:20,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:20,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:25,202 INFO L124 PetriNetUnfolderBase]: 11247/23465 cut-off events. [2024-11-08 19:10:25,202 INFO L125 PetriNetUnfolderBase]: For 69193/69193 co-relation queries the response was YES. [2024-11-08 19:10:25,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78922 conditions, 23465 events. 11247/23465 cut-off events. For 69193/69193 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 228854 event pairs, 341 based on Foata normal form. 1442/24903 useless extension candidates. Maximal degree in co-relation 78880. Up to 4201 conditions per place. [2024-11-08 19:10:25,373 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 393 selfloop transitions, 71 changer transitions 0/486 dead transitions. [2024-11-08 19:10:25,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 486 transitions, 4012 flow [2024-11-08 19:10:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 19:10:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 19:10:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1157 transitions. [2024-11-08 19:10:25,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7796495956873315 [2024-11-08 19:10:25,378 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 332 flow. Second operand 28 states and 1157 transitions. [2024-11-08 19:10:25,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 486 transitions, 4012 flow [2024-11-08 19:10:25,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 486 transitions, 3710 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:10:25,473 INFO L231 Difference]: Finished difference. Result has 129 places, 133 transitions, 1286 flow [2024-11-08 19:10:25,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1286, PETRI_PLACES=129, PETRI_TRANSITIONS=133} [2024-11-08 19:10:25,474 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-11-08 19:10:25,474 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 133 transitions, 1286 flow [2024-11-08 19:10:25,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:25,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:25,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:25,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 19:10:25,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:25,679 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:25,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 399273466, now seen corresponding path program 1 times [2024-11-08 19:10:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:25,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205173363] [2024-11-08 19:10:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205173363] [2024-11-08 19:10:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205173363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:25,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90733341] [2024-11-08 19:10:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:25,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:25,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:25,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:25,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:10:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:25,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:10:25,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:26,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:10:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90733341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:10:26,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:10:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-08 19:10:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062337039] [2024-11-08 19:10:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:10:26,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:10:26,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:10:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:10:26,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:26,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 133 transitions, 1286 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:26,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:26,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:26,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:29,856 INFO L124 PetriNetUnfolderBase]: 9393/20737 cut-off events. [2024-11-08 19:10:29,857 INFO L125 PetriNetUnfolderBase]: For 207024/207024 co-relation queries the response was YES. [2024-11-08 19:10:29,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81772 conditions, 20737 events. 9393/20737 cut-off events. For 207024/207024 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 205252 event pairs, 1649 based on Foata normal form. 1656/22331 useless extension candidates. Maximal degree in co-relation 81711. Up to 6826 conditions per place. [2024-11-08 19:10:30,011 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 88 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-11-08 19:10:30,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 1421 flow [2024-11-08 19:10:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:10:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:10:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-11-08 19:10:30,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2024-11-08 19:10:30,012 INFO L175 Difference]: Start difference. First operand has 129 places, 133 transitions, 1286 flow. Second operand 6 states and 227 transitions. [2024-11-08 19:10:30,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 1421 flow [2024-11-08 19:10:31,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 137 transitions, 1144 flow, removed 113 selfloop flow, removed 13 redundant places. [2024-11-08 19:10:31,739 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 725 flow [2024-11-08 19:10:31,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-08 19:10:31,740 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-08 19:10:31,740 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 725 flow [2024-11-08 19:10:31,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:31,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:31,741 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:31,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:10:31,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:31,946 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:31,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1263102071, now seen corresponding path program 1 times [2024-11-08 19:10:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:31,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068583826] [2024-11-08 19:10:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:32,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068583826] [2024-11-08 19:10:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068583826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557972560] [2024-11-08 19:10:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:32,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:32,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:32,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:10:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:32,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:10:32,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:32,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:10:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:32,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557972560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:10:32,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:10:32,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-08 19:10:32,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893754861] [2024-11-08 19:10:32,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:10:32,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 19:10:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 19:10:32,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-08 19:10:32,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:32,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 725 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:32,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:32,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:32,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:37,426 INFO L124 PetriNetUnfolderBase]: 13285/29345 cut-off events. [2024-11-08 19:10:37,426 INFO L125 PetriNetUnfolderBase]: For 254401/254401 co-relation queries the response was YES. [2024-11-08 19:10:37,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106768 conditions, 29345 events. 13285/29345 cut-off events. For 254401/254401 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 305533 event pairs, 539 based on Foata normal form. 908/30195 useless extension candidates. Maximal degree in co-relation 106713. Up to 7399 conditions per place. [2024-11-08 19:10:37,652 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 304 selfloop transitions, 54 changer transitions 0/380 dead transitions. [2024-11-08 19:10:37,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 380 transitions, 3057 flow [2024-11-08 19:10:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 19:10:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 19:10:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 841 transitions. [2024-11-08 19:10:37,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556154537286612 [2024-11-08 19:10:37,655 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 725 flow. Second operand 21 states and 841 transitions. [2024-11-08 19:10:37,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 380 transitions, 3057 flow [2024-11-08 19:10:38,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 380 transitions, 3040 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 19:10:38,173 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1120 flow [2024-11-08 19:10:38,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1120, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-08 19:10:38,174 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-08 19:10:38,174 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1120 flow [2024-11-08 19:10:38,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:38,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:38,175 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:38,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 19:10:38,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 19:10:38,375 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:38,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1521931797, now seen corresponding path program 1 times [2024-11-08 19:10:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98151985] [2024-11-08 19:10:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98151985] [2024-11-08 19:10:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98151985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502094424] [2024-11-08 19:10:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:38,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:38,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:38,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:38,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:10:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:38,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:10:38,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:38,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:10:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502094424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:10:38,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:10:38,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-08 19:10:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440396103] [2024-11-08 19:10:38,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:10:38,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 19:10:38,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 19:10:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-08 19:10:38,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 19:10:38,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1120 flow. Second operand has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:38,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:38,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 19:10:38,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:10:49,830 INFO L124 PetriNetUnfolderBase]: 25129/56597 cut-off events. [2024-11-08 19:10:49,830 INFO L125 PetriNetUnfolderBase]: For 909044/909044 co-relation queries the response was YES. [2024-11-08 19:10:50,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208544 conditions, 56597 events. 25129/56597 cut-off events. For 909044/909044 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 644215 event pairs, 1241 based on Foata normal form. 2988/59581 useless extension candidates. Maximal degree in co-relation 208483. Up to 6607 conditions per place. [2024-11-08 19:10:50,336 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 521 selfloop transitions, 118 changer transitions 0/661 dead transitions. [2024-11-08 19:10:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 661 transitions, 5775 flow [2024-11-08 19:10:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 19:10:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 19:10:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1492 transitions. [2024-11-08 19:10:50,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608363080061193 [2024-11-08 19:10:50,340 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1120 flow. Second operand 37 states and 1492 transitions. [2024-11-08 19:10:50,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 661 transitions, 5775 flow [2024-11-08 19:10:52,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 661 transitions, 5621 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-11-08 19:10:52,472 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2153 flow [2024-11-08 19:10:52,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2153, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-08 19:10:52,476 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-08 19:10:52,476 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2153 flow [2024-11-08 19:10:52,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:52,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:10:52,477 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:10:52,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:10:52,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:52,678 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 19:10:52,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:10:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1496225031, now seen corresponding path program 2 times [2024-11-08 19:10:52,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:10:52,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991668798] [2024-11-08 19:10:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:10:52,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:10:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:10:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:10:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991668798] [2024-11-08 19:10:53,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991668798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:10:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545231643] [2024-11-08 19:10:53,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:10:53,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:10:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:10:53,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:10:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e231c1ea-e366-45e4-8d1c-9b00b48bc8d6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:10:53,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:10:53,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:10:53,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 19:10:53,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:10:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:53,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:10:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:10:53,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545231643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:10:53,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:10:53,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-08 19:10:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025426944] [2024-11-08 19:10:53,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:10:53,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 19:10:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:10:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 19:10:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-08 19:10:53,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2024-11-08 19:10:53,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2153 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:10:53,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:10:53,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2024-11-08 19:10:53,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand