./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU --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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:51,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:51,123 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 21:56:51,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:51,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:51,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:51,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:51,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:51,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:51,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:51,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:51,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:51,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:51,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:51,172 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:51,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:51,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:56:51,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:51,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:51,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:51,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:51,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:56:51,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:51,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:56:51,179 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:51,180 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:56:51,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:56:51,180 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:51,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:51,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:51,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:51,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:51,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:51,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:51,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:51,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:51,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:51,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:56:51,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:51,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:51,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:51,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:51,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:51,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:51,187 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_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-10-31 21:56:51,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:51,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:51,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:51,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:51,544 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:51,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i Unable to find full path for "g++" [2024-10-31 21:56:53,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:53,990 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:53,991 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-10-31 21:56:54,014 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/data/32cf32577/c303fdff14984d8e8c7d62ac861a7a45/FLAG600bef691 [2024-10-31 21:56:54,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/data/32cf32577/c303fdff14984d8e8c7d62ac861a7a45 [2024-10-31 21:56:54,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:54,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:54,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:54,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:54,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:54,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:54,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6daf58cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54, skipping insertion in model container [2024-10-31 21:56:54,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:54,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:54,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:54,848 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:54,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:54,985 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:54,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54 WrapperNode [2024-10-31 21:56:54,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:54,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:54,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:54,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:54,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,077 INFO L138 Inliner]: procedures = 263, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 142 [2024-10-31 21:56:55,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:55,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:55,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:55,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:55,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,133 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-10-31 21:56:55,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:55,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:55,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:55,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:55,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (1/1) ... [2024-10-31 21:56:55,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:55,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:55,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:55,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 21:56:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 21:56:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 21:56:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 21:56:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 21:56:55,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 21:56:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:55,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:55,264 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:56:55,416 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:55,419 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:55,948 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:56:55,948 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:56,334 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:56,334 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 21:56:56,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:56 BoogieIcfgContainer [2024-10-31 21:56:56,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:56,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:56,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:56,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:56,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:54" (1/3) ... [2024-10-31 21:56:56,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c1eac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:56, skipping insertion in model container [2024-10-31 21:56:56,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:54" (2/3) ... [2024-10-31 21:56:56,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c1eac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:56, skipping insertion in model container [2024-10-31 21:56:56,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:56" (3/3) ... [2024-10-31 21:56:56,350 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-10-31 21:56:56,371 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:56,373 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-31 21:56:56,373 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:56:56,419 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:56:56,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2024-10-31 21:56:56,526 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2024-10-31 21:56:56,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:56:56,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-31 21:56:56,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2024-10-31 21:56:56,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2024-10-31 21:56:56,545 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:56,553 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;@1a8f7ae9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:56,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-31 21:56:56,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:56:56,562 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 21:56:56,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:56:56,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:56,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 21:56:56,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:56:56,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash 369336, now seen corresponding path program 1 times [2024-10-31 21:56:56,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:56,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659145683] [2024-10-31 21:56:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:56,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659145683] [2024-10-31 21:56:57,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659145683] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:57,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:57,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:56:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245914210] [2024-10-31 21:56:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:57,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:56:57,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:57,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:56:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:56:57,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:56:57,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:57,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:57,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:56:57,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:57,340 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2024-10-31 21:56:57,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:56:57,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1144 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2024-10-31 21:56:57,345 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-10-31 21:56:57,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2024-10-31 21:56:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:56:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:56:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-31 21:56:57,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-10-31 21:56:57,362 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2024-10-31 21:56:57,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2024-10-31 21:56:57,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:56:57,370 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2024-10-31 21:56:57,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-10-31 21:56:57,376 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-10-31 21:56:57,377 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2024-10-31 21:56:57,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:57,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:57,378 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 21:56:57,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:56:57,379 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:56:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1881648581, now seen corresponding path program 1 times [2024-10-31 21:56:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:57,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397295085] [2024-10-31 21:56:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:57,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397295085] [2024-10-31 21:56:57,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397295085] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953823796] [2024-10-31 21:56:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:57,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:57,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:57,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:56:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 21:56:57,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:57,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953823796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:57,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 21:56:57,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392520993] [2024-10-31 21:56:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:57,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:57,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:57,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:56:57,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:56:57,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:57,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:57,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:56:57,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:57,977 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2024-10-31 21:56:57,977 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:56:57,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1140 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2024-10-31 21:56:57,980 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-10-31 21:56:57,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2024-10-31 21:56:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:56:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:56:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-10-31 21:56:57,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-10-31 21:56:57,983 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2024-10-31 21:56:57,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2024-10-31 21:56:57,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:56:57,987 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-10-31 21:56:57,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-10-31 21:56:57,988 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-10-31 21:56:57,988 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-10-31 21:56:57,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:57,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:57,989 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 21:56:58,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:58,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:58,191 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:56:58,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1798436500, now seen corresponding path program 1 times [2024-10-31 21:56:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:58,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569217087] [2024-10-31 21:56:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:56:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569217087] [2024-10-31 21:56:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569217087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:58,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:56:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507031245] [2024-10-31 21:56:58,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:58,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:56:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:56:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:56:58,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:56:58,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:58,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:58,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:56:58,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:58,428 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2024-10-31 21:56:58,428 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 21:56:58,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2024-10-31 21:56:58,431 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-10-31 21:56:58,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2024-10-31 21:56:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:56:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:56:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-31 21:56:58,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-10-31 21:56:58,434 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2024-10-31 21:56:58,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2024-10-31 21:56:58,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 21:56:58,435 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2024-10-31 21:56:58,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-10-31 21:56:58,439 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-10-31 21:56:58,439 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2024-10-31 21:56:58,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:58,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:58,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:58,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:56:58,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:56:58,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1565500079, now seen corresponding path program 1 times [2024-10-31 21:56:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854571201] [2024-10-31 21:56:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:58,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:58,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854571201] [2024-10-31 21:56:58,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854571201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:58,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454211207] [2024-10-31 21:56:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:58,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:58,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:58,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:56:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:58,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:56:58,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:58,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454211207] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:58,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:58,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 21:56:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921419832] [2024-10-31 21:56:58,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:58,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:58,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:58,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:56:58,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 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) [2024-10-31 21:56:58,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:58,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:56:58,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:58,949 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2024-10-31 21:56:58,949 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-31 21:56:58,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1139 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2024-10-31 21:56:58,955 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-10-31 21:56:58,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2024-10-31 21:56:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:56:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:56:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-31 21:56:58,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-10-31 21:56:58,957 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2024-10-31 21:56:58,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2024-10-31 21:56:58,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:56:58,962 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2024-10-31 21:56:58,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-31 21:56:58,963 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-10-31 21:56:58,964 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2024-10-31 21:56:58,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 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) [2024-10-31 21:56:58,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:58,965 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:58,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:59,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-31 21:56:59,167 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:56:59,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1159090225, now seen corresponding path program 2 times [2024-10-31 21:56:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:59,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770444629] [2024-10-31 21:56:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:59,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770444629] [2024-10-31 21:56:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770444629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907821502] [2024-10-31 21:56:59,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:56:59,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:59,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:59,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:59,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:56:59,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 21:56:59,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:59,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 21:56:59,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:59,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-31 21:56:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 21:56:59,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907821502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:59,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:59,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-10-31 21:56:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6617888] [2024-10-31 21:56:59,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:59,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:59,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:56:59,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:56:59,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:59,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:59,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:56:59,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:00,322 INFO L124 PetriNetUnfolderBase]: 212/532 cut-off events. [2024-10-31 21:57:00,323 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 21:57:00,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 532 events. 212/532 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2561 event pairs, 51 based on Foata normal form. 14/444 useless extension candidates. Maximal degree in co-relation 939. Up to 206 conditions per place. [2024-10-31 21:57:00,329 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 71 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-10-31 21:57:00,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 98 transitions, 404 flow [2024-10-31 21:57:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:57:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:57:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-10-31 21:57:00,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6314102564102564 [2024-10-31 21:57:00,332 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 8 states and 197 transitions. [2024-10-31 21:57:00,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 98 transitions, 404 flow [2024-10-31 21:57:00,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 98 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:00,336 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 232 flow [2024-10-31 21:57:00,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-10-31 21:57:00,339 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-10-31 21:57:00,339 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 232 flow [2024-10-31 21:57:00,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:00,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:00,340 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:00,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:57:00,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:00,541 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:00,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1137976208, now seen corresponding path program 1 times [2024-10-31 21:57:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:00,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749429333] [2024-10-31 21:57:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:00,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:00,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749429333] [2024-10-31 21:57:00,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749429333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:00,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117749032] [2024-10-31 21:57:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:00,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:00,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:00,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:57:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:00,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:57:00,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:00,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:57:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117749032] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:57:00,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:57:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-31 21:57:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29265067] [2024-10-31 21:57:00,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:57:00,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 21:57:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 21:57:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-31 21:57:01,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:01,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 232 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:01,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:01,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:01,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:01,360 INFO L124 PetriNetUnfolderBase]: 170/507 cut-off events. [2024-10-31 21:57:01,361 INFO L125 PetriNetUnfolderBase]: For 277/285 co-relation queries the response was YES. [2024-10-31 21:57:01,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 507 events. 170/507 cut-off events. For 277/285 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2538 event pairs, 90 based on Foata normal form. 4/441 useless extension candidates. Maximal degree in co-relation 1112. Up to 338 conditions per place. [2024-10-31 21:57:01,366 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 35 selfloop transitions, 15 changer transitions 0/65 dead transitions. [2024-10-31 21:57:01,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 380 flow [2024-10-31 21:57:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 21:57:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 21:57:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2024-10-31 21:57:01,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-10-31 21:57:01,372 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 232 flow. Second operand 15 states and 250 transitions. [2024-10-31 21:57:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 380 flow [2024-10-31 21:57:01,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:57:01,382 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 329 flow [2024-10-31 21:57:01,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-10-31 21:57:01,383 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2024-10-31 21:57:01,383 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 329 flow [2024-10-31 21:57:01,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:01,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:01,384 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:01,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 21:57:01,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 21:57:01,586 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:01,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:01,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1973490000, now seen corresponding path program 2 times [2024-10-31 21:57:01,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:01,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364039226] [2024-10-31 21:57:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364039226] [2024-10-31 21:57:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364039226] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:01,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786480439] [2024-10-31 21:57:01,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:57:01,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:01,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:01,962 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:01,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:57:02,052 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 21:57:02,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:57:02,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 21:57:02,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:02,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-31 21:57:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-31 21:57:02,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:57:02,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786480439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:02,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:57:02,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 20 [2024-10-31 21:57:02,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351714568] [2024-10-31 21:57:02,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:02,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-10-31 21:57:02,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:02,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:02,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:02,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:02,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:02,989 INFO L124 PetriNetUnfolderBase]: 311/797 cut-off events. [2024-10-31 21:57:02,989 INFO L125 PetriNetUnfolderBase]: For 481/508 co-relation queries the response was YES. [2024-10-31 21:57:02,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 797 events. 311/797 cut-off events. For 481/508 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4057 event pairs, 64 based on Foata normal form. 28/741 useless extension candidates. Maximal degree in co-relation 1848. Up to 359 conditions per place. [2024-10-31 21:57:02,997 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 100 selfloop transitions, 32 changer transitions 0/145 dead transitions. [2024-10-31 21:57:02,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 145 transitions, 922 flow [2024-10-31 21:57:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:57:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:57:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-10-31 21:57:02,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-10-31 21:57:02,999 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 329 flow. Second operand 8 states and 196 transitions. [2024-10-31 21:57:02,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 145 transitions, 922 flow [2024-10-31 21:57:03,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 912 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 21:57:03,009 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 623 flow [2024-10-31 21:57:03,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=623, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-10-31 21:57:03,010 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2024-10-31 21:57:03,010 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 623 flow [2024-10-31 21:57:03,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:03,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:03,011 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:03,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 21:57:03,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:03,216 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:03,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1703182031, now seen corresponding path program 1 times [2024-10-31 21:57:03,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534396804] [2024-10-31 21:57:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534396804] [2024-10-31 21:57:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534396804] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:57:03,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487032812] [2024-10-31 21:57:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:03,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:03,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:57:03,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:57:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:03,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 21:57:03,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:57:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:03,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:57:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:03,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487032812] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:57:03,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:57:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-31 21:57:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066122005] [2024-10-31 21:57:03,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:57:03,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 21:57:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 21:57:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:57:04,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:04,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 623 flow. Second operand has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:04,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:04,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:04,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:04,385 INFO L124 PetriNetUnfolderBase]: 244/722 cut-off events. [2024-10-31 21:57:04,385 INFO L125 PetriNetUnfolderBase]: For 1112/1165 co-relation queries the response was YES. [2024-10-31 21:57:04,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 722 events. 244/722 cut-off events. For 1112/1165 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3787 event pairs, 100 based on Foata normal form. 16/661 useless extension candidates. Maximal degree in co-relation 1990. Up to 487 conditions per place. [2024-10-31 21:57:04,392 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 64 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-10-31 21:57:04,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 102 transitions, 847 flow [2024-10-31 21:57:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-31 21:57:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-31 21:57:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2024-10-31 21:57:04,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2024-10-31 21:57:04,395 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 623 flow. Second operand 21 states and 339 transitions. [2024-10-31 21:57:04,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 102 transitions, 847 flow [2024-10-31 21:57:04,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 847 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:57:04,405 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 734 flow [2024-10-31 21:57:04,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=734, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-10-31 21:57:04,407 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2024-10-31 21:57:04,409 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 734 flow [2024-10-31 21:57:04,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:04,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:04,410 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:04,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 21:57:04,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc37c29-2359-47ac-928e-5ba82918b18f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:57:04,614 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:04,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1870638318, now seen corresponding path program 2 times [2024-10-31 21:57:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:04,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002517395] [2024-10-31 21:57:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:04,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:04,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002517395] [2024-10-31 21:57:04,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002517395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:04,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:04,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:57:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988139794] [2024-10-31 21:57:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:04,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:05,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:05,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 734 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:05,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:05,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:05,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:05,404 INFO L124 PetriNetUnfolderBase]: 289/781 cut-off events. [2024-10-31 21:57:05,404 INFO L125 PetriNetUnfolderBase]: For 1282/1308 co-relation queries the response was YES. [2024-10-31 21:57:05,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 781 events. 289/781 cut-off events. For 1282/1308 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4065 event pairs, 100 based on Foata normal form. 25/724 useless extension candidates. Maximal degree in co-relation 2219. Up to 514 conditions per place. [2024-10-31 21:57:05,412 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 95 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2024-10-31 21:57:05,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 126 transitions, 1068 flow [2024-10-31 21:57:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:57:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:57:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-10-31 21:57:05,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2024-10-31 21:57:05,414 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 734 flow. Second operand 7 states and 159 transitions. [2024-10-31 21:57:05,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 126 transitions, 1068 flow [2024-10-31 21:57:05,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 126 transitions, 1007 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-10-31 21:57:05,425 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 703 flow [2024-10-31 21:57:05,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2024-10-31 21:57:05,426 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2024-10-31 21:57:05,426 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 703 flow [2024-10-31 21:57:05,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:05,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:05,427 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:05,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:57:05,429 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:05,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1769794412, now seen corresponding path program 1 times [2024-10-31 21:57:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:05,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793097101] [2024-10-31 21:57:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:05,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793097101] [2024-10-31 21:57:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793097101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:05,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:57:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015656174] [2024-10-31 21:57:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:05,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:05,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:05,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 703 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:05,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:05,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:05,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:06,139 INFO L124 PetriNetUnfolderBase]: 290/791 cut-off events. [2024-10-31 21:57:06,139 INFO L125 PetriNetUnfolderBase]: For 1196/1202 co-relation queries the response was YES. [2024-10-31 21:57:06,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 791 events. 290/791 cut-off events. For 1196/1202 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4136 event pairs, 100 based on Foata normal form. 23/732 useless extension candidates. Maximal degree in co-relation 2269. Up to 515 conditions per place. [2024-10-31 21:57:06,147 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 95 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-10-31 21:57:06,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 125 transitions, 1052 flow [2024-10-31 21:57:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:57:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:57:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-10-31 21:57:06,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2024-10-31 21:57:06,149 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 703 flow. Second operand 7 states and 159 transitions. [2024-10-31 21:57:06,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 125 transitions, 1052 flow [2024-10-31 21:57:06,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 125 transitions, 1010 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:57:06,159 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 694 flow [2024-10-31 21:57:06,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=694, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2024-10-31 21:57:06,160 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2024-10-31 21:57:06,160 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 694 flow [2024-10-31 21:57:06,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:06,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:06,161 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:06,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:57:06,161 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:06,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 985825139, now seen corresponding path program 1 times [2024-10-31 21:57:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:06,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110520303] [2024-10-31 21:57:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110520303] [2024-10-31 21:57:06,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110520303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:06,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:06,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:57:06,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583213663] [2024-10-31 21:57:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:06,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:57:06,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:06,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 694 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:06,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:06,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:06,515 INFO L124 PetriNetUnfolderBase]: 314/844 cut-off events. [2024-10-31 21:57:06,515 INFO L125 PetriNetUnfolderBase]: For 1039/1045 co-relation queries the response was YES. [2024-10-31 21:57:06,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 844 events. 314/844 cut-off events. For 1039/1045 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4430 event pairs, 95 based on Foata normal form. 32/810 useless extension candidates. Maximal degree in co-relation 2367. Up to 341 conditions per place. [2024-10-31 21:57:06,524 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 114 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2024-10-31 21:57:06,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 133 transitions, 1083 flow [2024-10-31 21:57:06,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:57:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-31 21:57:06,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-10-31 21:57:06,526 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 694 flow. Second operand 4 states and 109 transitions. [2024-10-31 21:57:06,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 133 transitions, 1083 flow [2024-10-31 21:57:06,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 1062 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:06,537 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 712 flow [2024-10-31 21:57:06,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2024-10-31 21:57:06,538 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2024-10-31 21:57:06,538 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 712 flow [2024-10-31 21:57:06,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:06,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:06,539 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:06,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:57:06,539 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:06,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1073587094, now seen corresponding path program 1 times [2024-10-31 21:57:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821613544] [2024-10-31 21:57:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821613544] [2024-10-31 21:57:06,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821613544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:06,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:06,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:57:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512441490] [2024-10-31 21:57:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:06,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:57:06,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:57:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:57:06,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:06,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:06,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:06,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:06,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:06,997 INFO L124 PetriNetUnfolderBase]: 387/1009 cut-off events. [2024-10-31 21:57:06,997 INFO L125 PetriNetUnfolderBase]: For 1469/1486 co-relation queries the response was YES. [2024-10-31 21:57:07,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 1009 events. 387/1009 cut-off events. For 1469/1486 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5292 event pairs, 154 based on Foata normal form. 36/1022 useless extension candidates. Maximal degree in co-relation 2957. Up to 471 conditions per place. [2024-10-31 21:57:07,009 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 120 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2024-10-31 21:57:07,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 139 transitions, 1168 flow [2024-10-31 21:57:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:57:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:57:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-31 21:57:07,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-10-31 21:57:07,011 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 712 flow. Second operand 4 states and 109 transitions. [2024-10-31 21:57:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 139 transitions, 1168 flow [2024-10-31 21:57:07,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 139 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:07,022 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 746 flow [2024-10-31 21:57:07,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=746, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-10-31 21:57:07,023 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2024-10-31 21:57:07,023 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 746 flow [2024-10-31 21:57:07,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:07,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:07,024 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:07,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:57:07,024 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:07,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1615705185, now seen corresponding path program 1 times [2024-10-31 21:57:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:07,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684997534] [2024-10-31 21:57:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684997534] [2024-10-31 21:57:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684997534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:07,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:07,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954635201] [2024-10-31 21:57:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:07,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:57:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:57:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:07,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:07,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:07,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:07,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:07,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:08,529 INFO L124 PetriNetUnfolderBase]: 478/1238 cut-off events. [2024-10-31 21:57:08,529 INFO L125 PetriNetUnfolderBase]: For 2314/2328 co-relation queries the response was YES. [2024-10-31 21:57:08,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1238 events. 478/1238 cut-off events. For 2314/2328 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7144 event pairs, 175 based on Foata normal form. 36/1274 useless extension candidates. Maximal degree in co-relation 3893. Up to 841 conditions per place. [2024-10-31 21:57:08,544 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 115 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2024-10-31 21:57:08,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 169 transitions, 1465 flow [2024-10-31 21:57:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 21:57:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 21:57:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 304 transitions. [2024-10-31 21:57:08,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2024-10-31 21:57:08,549 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 746 flow. Second operand 15 states and 304 transitions. [2024-10-31 21:57:08,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 169 transitions, 1465 flow [2024-10-31 21:57:08,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 169 transitions, 1459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:08,563 INFO L231 Difference]: Finished difference. Result has 132 places, 136 transitions, 1159 flow [2024-10-31 21:57:08,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1159, PETRI_PLACES=132, PETRI_TRANSITIONS=136} [2024-10-31 21:57:08,564 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-10-31 21:57:08,564 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 136 transitions, 1159 flow [2024-10-31 21:57:08,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:08,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:08,565 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:08,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 21:57:08,565 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:08,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash 276248802, now seen corresponding path program 1 times [2024-10-31 21:57:08,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:08,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024513290] [2024-10-31 21:57:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:08,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:09,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024513290] [2024-10-31 21:57:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024513290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:09,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:09,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:57:09,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501332817] [2024-10-31 21:57:09,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:09,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:09,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:09,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-31 21:57:09,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 136 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:09,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:09,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-31 21:57:09,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:09,770 INFO L124 PetriNetUnfolderBase]: 507/1365 cut-off events. [2024-10-31 21:57:09,773 INFO L125 PetriNetUnfolderBase]: For 4127/4195 co-relation queries the response was YES. [2024-10-31 21:57:09,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5237 conditions, 1365 events. 507/1365 cut-off events. For 4127/4195 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8169 event pairs, 132 based on Foata normal form. 11/1376 useless extension candidates. Maximal degree in co-relation 5071. Up to 423 conditions per place. [2024-10-31 21:57:09,818 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 207 selfloop transitions, 26 changer transitions 0/248 dead transitions. [2024-10-31 21:57:09,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 248 transitions, 2507 flow [2024-10-31 21:57:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:57:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:57:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-10-31 21:57:09,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2024-10-31 21:57:09,824 INFO L175 Difference]: Start difference. First operand has 132 places, 136 transitions, 1159 flow. Second operand 8 states and 207 transitions. [2024-10-31 21:57:09,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 248 transitions, 2507 flow [2024-10-31 21:57:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 248 transitions, 2493 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:09,880 INFO L231 Difference]: Finished difference. Result has 143 places, 158 transitions, 1428 flow [2024-10-31 21:57:09,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1428, PETRI_PLACES=143, PETRI_TRANSITIONS=158} [2024-10-31 21:57:09,882 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 104 predicate places. [2024-10-31 21:57:09,883 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 158 transitions, 1428 flow [2024-10-31 21:57:09,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:09,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:09,884 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:09,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 21:57:09,885 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:09,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -628640448, now seen corresponding path program 2 times [2024-10-31 21:57:09,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:09,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123312981] [2024-10-31 21:57:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:10,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:10,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123312981] [2024-10-31 21:57:10,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123312981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:10,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:10,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:57:10,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956235815] [2024-10-31 21:57:10,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:10,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:10,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:10,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-31 21:57:10,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 158 transitions, 1428 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:10,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:10,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-31 21:57:10,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:11,128 INFO L124 PetriNetUnfolderBase]: 550/1456 cut-off events. [2024-10-31 21:57:11,128 INFO L125 PetriNetUnfolderBase]: For 5935/5993 co-relation queries the response was YES. [2024-10-31 21:57:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1456 events. 550/1456 cut-off events. For 5935/5993 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8902 event pairs, 133 based on Foata normal form. 16/1470 useless extension candidates. Maximal degree in co-relation 6216. Up to 487 conditions per place. [2024-10-31 21:57:11,158 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 198 selfloop transitions, 48 changer transitions 0/261 dead transitions. [2024-10-31 21:57:11,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 261 transitions, 2813 flow [2024-10-31 21:57:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:57:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:57:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-10-31 21:57:11,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6506410256410257 [2024-10-31 21:57:11,160 INFO L175 Difference]: Start difference. First operand has 143 places, 158 transitions, 1428 flow. Second operand 8 states and 203 transitions. [2024-10-31 21:57:11,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 261 transitions, 2813 flow [2024-10-31 21:57:11,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 261 transitions, 2802 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:11,194 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 1841 flow [2024-10-31 21:57:11,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2024-10-31 21:57:11,195 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 115 predicate places. [2024-10-31 21:57:11,196 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 1841 flow [2024-10-31 21:57:11,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:11,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:11,196 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:11,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 21:57:11,197 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:11,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1326086529, now seen corresponding path program 2 times [2024-10-31 21:57:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698879904] [2024-10-31 21:57:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:11,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698879904] [2024-10-31 21:57:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698879904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:11,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:11,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478474042] [2024-10-31 21:57:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:11,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:57:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:57:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:11,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:11,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 1841 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:11,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:11,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:11,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:12,866 INFO L124 PetriNetUnfolderBase]: 717/1847 cut-off events. [2024-10-31 21:57:12,867 INFO L125 PetriNetUnfolderBase]: For 11596/11614 co-relation queries the response was YES. [2024-10-31 21:57:12,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9034 conditions, 1847 events. 717/1847 cut-off events. For 11596/11614 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11953 event pairs, 198 based on Foata normal form. 48/1895 useless extension candidates. Maximal degree in co-relation 8856. Up to 1178 conditions per place. [2024-10-31 21:57:12,905 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 181 selfloop transitions, 84 changer transitions 0/277 dead transitions. [2024-10-31 21:57:12,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 277 transitions, 3353 flow [2024-10-31 21:57:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:57:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 21:57:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2024-10-31 21:57:12,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-10-31 21:57:12,909 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 1841 flow. Second operand 12 states and 256 transitions. [2024-10-31 21:57:12,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 277 transitions, 3353 flow [2024-10-31 21:57:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 277 transitions, 3271 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-31 21:57:12,957 INFO L231 Difference]: Finished difference. Result has 169 places, 227 transitions, 2591 flow [2024-10-31 21:57:12,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2591, PETRI_PLACES=169, PETRI_TRANSITIONS=227} [2024-10-31 21:57:12,959 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 130 predicate places. [2024-10-31 21:57:12,959 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 227 transitions, 2591 flow [2024-10-31 21:57:12,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:12,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:12,961 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:12,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 21:57:12,962 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:12,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -651456534, now seen corresponding path program 3 times [2024-10-31 21:57:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506296015] [2024-10-31 21:57:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506296015] [2024-10-31 21:57:13,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506296015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:13,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:13,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:57:13,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617567735] [2024-10-31 21:57:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:13,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:13,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:13,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:13,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-31 21:57:13,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 227 transitions, 2591 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:13,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:13,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-31 21:57:13,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:14,339 INFO L124 PetriNetUnfolderBase]: 660/1777 cut-off events. [2024-10-31 21:57:14,340 INFO L125 PetriNetUnfolderBase]: For 13654/13698 co-relation queries the response was YES. [2024-10-31 21:57:14,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 1777 events. 660/1777 cut-off events. For 13654/13698 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11557 event pairs, 128 based on Foata normal form. 16/1787 useless extension candidates. Maximal degree in co-relation 9302. Up to 613 conditions per place. [2024-10-31 21:57:14,378 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 299 selfloop transitions, 45 changer transitions 0/359 dead transitions. [2024-10-31 21:57:14,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 359 transitions, 4854 flow [2024-10-31 21:57:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:57:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:57:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-10-31 21:57:14,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2024-10-31 21:57:14,380 INFO L175 Difference]: Start difference. First operand has 169 places, 227 transitions, 2591 flow. Second operand 8 states and 207 transitions. [2024-10-31 21:57:14,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 359 transitions, 4854 flow [2024-10-31 21:57:14,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 359 transitions, 4733 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-10-31 21:57:14,457 INFO L231 Difference]: Finished difference. Result has 179 places, 252 transitions, 3057 flow [2024-10-31 21:57:14,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3057, PETRI_PLACES=179, PETRI_TRANSITIONS=252} [2024-10-31 21:57:14,459 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 140 predicate places. [2024-10-31 21:57:14,459 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 252 transitions, 3057 flow [2024-10-31 21:57:14,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:14,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:14,460 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:14,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 21:57:14,460 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:14,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash -930599849, now seen corresponding path program 3 times [2024-10-31 21:57:14,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:14,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306168826] [2024-10-31 21:57:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:15,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306168826] [2024-10-31 21:57:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306168826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:15,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652140052] [2024-10-31 21:57:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:15,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:57:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:57:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:15,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 252 transitions, 3057 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:15,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:15,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:16,318 INFO L124 PetriNetUnfolderBase]: 896/2241 cut-off events. [2024-10-31 21:57:16,318 INFO L125 PetriNetUnfolderBase]: For 23649/23692 co-relation queries the response was YES. [2024-10-31 21:57:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13086 conditions, 2241 events. 896/2241 cut-off events. For 23649/23692 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 15011 event pairs, 98 based on Foata normal form. 46/2286 useless extension candidates. Maximal degree in co-relation 12895. Up to 1189 conditions per place. [2024-10-31 21:57:16,354 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 231 selfloop transitions, 155 changer transitions 0/398 dead transitions. [2024-10-31 21:57:16,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 398 transitions, 5565 flow [2024-10-31 21:57:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-31 21:57:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-31 21:57:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 445 transitions. [2024-10-31 21:57:16,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.496098104793757 [2024-10-31 21:57:16,356 INFO L175 Difference]: Start difference. First operand has 179 places, 252 transitions, 3057 flow. Second operand 23 states and 445 transitions. [2024-10-31 21:57:16,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 398 transitions, 5565 flow [2024-10-31 21:57:16,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 398 transitions, 5516 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-10-31 21:57:16,445 INFO L231 Difference]: Finished difference. Result has 207 places, 325 transitions, 4283 flow [2024-10-31 21:57:16,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4283, PETRI_PLACES=207, PETRI_TRANSITIONS=325} [2024-10-31 21:57:16,446 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2024-10-31 21:57:16,446 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 325 transitions, 4283 flow [2024-10-31 21:57:16,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:16,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:16,447 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:16,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 21:57:16,447 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:16,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1303693168, now seen corresponding path program 4 times [2024-10-31 21:57:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:16,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283461447] [2024-10-31 21:57:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:16,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:16,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283461447] [2024-10-31 21:57:16,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283461447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:16,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:16,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306289913] [2024-10-31 21:57:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:16,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:57:16,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:16,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:57:16,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:16,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-31 21:57:16,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 325 transitions, 4283 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:16,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:16,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-31 21:57:16,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:57:18,406 INFO L124 PetriNetUnfolderBase]: 887/2366 cut-off events. [2024-10-31 21:57:18,407 INFO L125 PetriNetUnfolderBase]: For 28537/28710 co-relation queries the response was YES. [2024-10-31 21:57:18,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14682 conditions, 2366 events. 887/2366 cut-off events. For 28537/28710 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16571 event pairs, 107 based on Foata normal form. 21/2379 useless extension candidates. Maximal degree in co-relation 14483. Up to 503 conditions per place. [2024-10-31 21:57:18,449 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 376 selfloop transitions, 145 changer transitions 0/536 dead transitions. [2024-10-31 21:57:18,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 536 transitions, 7993 flow [2024-10-31 21:57:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 21:57:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 21:57:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 318 transitions. [2024-10-31 21:57:18,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6272189349112426 [2024-10-31 21:57:18,451 INFO L175 Difference]: Start difference. First operand has 207 places, 325 transitions, 4283 flow. Second operand 13 states and 318 transitions. [2024-10-31 21:57:18,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 536 transitions, 7993 flow [2024-10-31 21:57:18,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 536 transitions, 7520 flow, removed 147 selfloop flow, removed 7 redundant places. [2024-10-31 21:57:18,607 INFO L231 Difference]: Finished difference. Result has 219 places, 391 transitions, 5407 flow [2024-10-31 21:57:18,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3973, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5407, PETRI_PLACES=219, PETRI_TRANSITIONS=391} [2024-10-31 21:57:18,609 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 180 predicate places. [2024-10-31 21:57:18,609 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 391 transitions, 5407 flow [2024-10-31 21:57:18,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:18,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:57:18,610 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:18,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 21:57:18,610 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 21:57:18,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2140924247, now seen corresponding path program 4 times [2024-10-31 21:57:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:18,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035846640] [2024-10-31 21:57:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:18,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 21:57:19,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:19,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035846640] [2024-10-31 21:57:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035846640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:19,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:19,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299198292] [2024-10-31 21:57:19,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:19,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:57:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:57:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:57:19,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 21:57:19,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 391 transitions, 5407 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:57:19,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:57:19,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 21:57:19,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand