./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:48:46,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:48:46,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:48:46,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:48:46,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:48:46,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:48:46,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:48:46,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:48:46,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:48:46,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:48:46,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:48:46,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:48:46,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:48:46,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:48:46,723 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:48:46,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:48:46,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:48:46,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:48:46,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:48:46,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:48:46,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:48:46,727 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:48:46,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:48:46,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:48:46,728 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:48:46,728 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:48:46,728 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:48:46,728 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:48:46,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:48:46,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:48:46,729 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:48:46,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:48:46,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:48:46,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:48:46,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:46,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:48:46,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:48:46,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:48:46,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:48:46,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:48:46,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:48:46,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:48:46,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:48:46,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:48:46,733 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2024-11-17 07:48:46,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:48:46,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:48:46,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:48:46,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:48:46,984 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:48:46,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-17 07:48:48,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:48:48,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:48:48,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-17 07:48:48,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599a44211/9fb817098f8b42a7bea5de4682198be7/FLAG38762588c [2024-11-17 07:48:48,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599a44211/9fb817098f8b42a7bea5de4682198be7 [2024-11-17 07:48:48,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:48:48,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:48:48,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:48,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:48:48,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:48:48,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:48" (1/1) ... [2024-11-17 07:48:48,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4bf5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:48, skipping insertion in model container [2024-11-17 07:48:48,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:48" (1/1) ... [2024-11-17 07:48:48,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:48:49,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:49,394 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:48:49,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:49,494 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:48:49,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49 WrapperNode [2024-11-17 07:48:49,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:49,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:49,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:48:49,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:48:49,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,561 INFO L138 Inliner]: procedures = 272, calls = 96, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 284 [2024-11-17 07:48:49,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:49,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:48:49,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:48:49,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:48:49,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,596 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 2, 70]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 5 writes are split as follows [0, 0, 1, 4]. [2024-11-17 07:48:49,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,606 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:48:49,618 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:48:49,618 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:48:49,618 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:48:49,619 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (1/1) ... [2024-11-17 07:48:49,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:49,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:49,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:48:49,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:48:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:48:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:48:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:48:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:48:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:48:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:48:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:48:49,706 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:48:49,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:48:49,708 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:48:49,857 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:48:49,859 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:48:50,224 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:48:50,224 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:48:50,314 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:48:50,314 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:48:50,748 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:48:50,749 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:48:50,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:50 BoogieIcfgContainer [2024-11-17 07:48:50,750 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:48:50,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:48:50,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:48:50,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:48:50,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:48:48" (1/3) ... [2024-11-17 07:48:50,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1fa4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:50, skipping insertion in model container [2024-11-17 07:48:50,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:49" (2/3) ... [2024-11-17 07:48:50,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1fa4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:50, skipping insertion in model container [2024-11-17 07:48:50,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:50" (3/3) ... [2024-11-17 07:48:50,760 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2024-11-17 07:48:50,776 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:48:50,777 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-17 07:48:50,777 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:48:50,840 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:48:50,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 144 transitions, 295 flow [2024-11-17 07:48:50,956 INFO L124 PetriNetUnfolderBase]: 46/209 cut-off events. [2024-11-17 07:48:50,957 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:50,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 46/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 862 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2024-11-17 07:48:50,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 144 transitions, 295 flow [2024-11-17 07:48:50,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 143 transitions, 293 flow [2024-11-17 07:48:50,984 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:50,994 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;@4994f453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:50,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-17 07:48:51,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:51,001 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:48:51,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:51,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:51,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:48:51,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:51,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 21903881, now seen corresponding path program 1 times [2024-11-17 07:48:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522388663] [2024-11-17 07:48:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:51,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:51,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522388663] [2024-11-17 07:48:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522388663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:51,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866844262] [2024-11-17 07:48:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:51,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:51,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2024-11-17 07:48:51,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 143 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:51,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:51,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2024-11-17 07:48:51,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:51,970 INFO L124 PetriNetUnfolderBase]: 553/1850 cut-off events. [2024-11-17 07:48:51,971 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:51,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 1850 events. 553/1850 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13928 event pairs, 460 based on Foata normal form. 510/2176 useless extension candidates. Maximal degree in co-relation 2803. Up to 1058 conditions per place. [2024-11-17 07:48:51,989 INFO L140 encePairwiseOnDemand]: 113/144 looper letters, 53 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-17 07:48:51,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 359 flow [2024-11-17 07:48:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2024-11-17 07:48:52,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5920138888888888 [2024-11-17 07:48:52,009 INFO L175 Difference]: Start difference. First operand has 116 places, 143 transitions, 293 flow. Second operand 4 states and 341 transitions. [2024-11-17 07:48:52,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 359 flow [2024-11-17 07:48:52,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:48:52,016 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 267 flow [2024-11-17 07:48:52,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2024-11-17 07:48:52,024 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 5 predicate places. [2024-11-17 07:48:52,024 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 267 flow [2024-11-17 07:48:52,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:52,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:52,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:48:52,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:48:52,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:52,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -584056645, now seen corresponding path program 1 times [2024-11-17 07:48:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418431269] [2024-11-17 07:48:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:52,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:52,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418431269] [2024-11-17 07:48:52,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418431269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:52,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181168934] [2024-11-17 07:48:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:52,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:52,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:52,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:48:52,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:48:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:52,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:48:52,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:52,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:48:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181168934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:48:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:48:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140536593] [2024-11-17 07:48:52,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:52,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:48:52,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:52,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:48:52,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:48:52,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2024-11-17 07:48:52,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:52,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:52,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2024-11-17 07:48:52,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:52,719 INFO L124 PetriNetUnfolderBase]: 553/1849 cut-off events. [2024-11-17 07:48:52,720 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 07:48:52,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 1849 events. 553/1849 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13928 event pairs, 460 based on Foata normal form. 1/1666 useless extension candidates. Maximal degree in co-relation 2906. Up to 1052 conditions per place. [2024-11-17 07:48:52,731 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 49 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2024-11-17 07:48:52,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 119 transitions, 373 flow [2024-11-17 07:48:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2024-11-17 07:48:52,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-11-17 07:48:52,734 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 267 flow. Second operand 6 states and 440 transitions. [2024-11-17 07:48:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 119 transitions, 373 flow [2024-11-17 07:48:52,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 119 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:52,738 INFO L231 Difference]: Finished difference. Result has 124 places, 119 transitions, 273 flow [2024-11-17 07:48:52,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=124, PETRI_TRANSITIONS=119} [2024-11-17 07:48:52,739 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 8 predicate places. [2024-11-17 07:48:52,739 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 119 transitions, 273 flow [2024-11-17 07:48:52,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:52,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:52,740 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:48:52,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:48:52,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:52,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:52,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash -925886233, now seen corresponding path program 1 times [2024-11-17 07:48:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:52,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280745270] [2024-11-17 07:48:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:48:53,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:53,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280745270] [2024-11-17 07:48:53,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280745270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:53,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:53,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:53,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224547641] [2024-11-17 07:48:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:53,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:48:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:53,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:48:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:48:53,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 144 [2024-11-17 07:48:53,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 119 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:53,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:53,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 144 [2024-11-17 07:48:53,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:53,252 INFO L124 PetriNetUnfolderBase]: 553/1848 cut-off events. [2024-11-17 07:48:53,252 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-17 07:48:53,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2926 conditions, 1848 events. 553/1848 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13931 event pairs, 460 based on Foata normal form. 1/1667 useless extension candidates. Maximal degree in co-relation 2901. Up to 1055 conditions per place. [2024-11-17 07:48:53,264 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 49 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-17 07:48:53,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 375 flow [2024-11-17 07:48:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:48:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:48:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-11-17 07:48:53,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-11-17 07:48:53,267 INFO L175 Difference]: Start difference. First operand has 124 places, 119 transitions, 273 flow. Second operand 3 states and 247 transitions. [2024-11-17 07:48:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 375 flow [2024-11-17 07:48:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 118 transitions, 365 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:48:53,271 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 267 flow [2024-11-17 07:48:53,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2024-11-17 07:48:53,272 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 5 predicate places. [2024-11-17 07:48:53,272 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 267 flow [2024-11-17 07:48:53,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:53,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:53,273 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:53,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:48:53,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:53,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1319128601, now seen corresponding path program 1 times [2024-11-17 07:48:53,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:53,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522839316] [2024-11-17 07:48:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:53,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:53,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:53,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522839316] [2024-11-17 07:48:53,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522839316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:53,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039715254] [2024-11-17 07:48:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:53,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:53,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:48:53,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:48:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:53,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:48:53,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:53,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:48:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:53,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039715254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:48:53,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:48:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 07:48:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101952958] [2024-11-17 07:48:53,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:48:53,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:48:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:48:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:48:53,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2024-11-17 07:48:53,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 267 flow. Second operand has 10 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:53,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:53,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2024-11-17 07:48:53,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:53,927 INFO L124 PetriNetUnfolderBase]: 553/1854 cut-off events. [2024-11-17 07:48:53,928 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-17 07:48:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1854 events. 553/1854 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13922 event pairs, 460 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 2896. Up to 1054 conditions per place. [2024-11-17 07:48:53,938 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 50 selfloop transitions, 7 changer transitions 0/121 dead transitions. [2024-11-17 07:48:53,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 121 transitions, 403 flow [2024-11-17 07:48:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:48:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:48:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 507 transitions. [2024-11-17 07:48:53,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-11-17 07:48:53,940 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 267 flow. Second operand 7 states and 507 transitions. [2024-11-17 07:48:53,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 121 transitions, 403 flow [2024-11-17 07:48:53,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 121 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:48:53,944 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 300 flow [2024-11-17 07:48:53,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=127, PETRI_TRANSITIONS=121} [2024-11-17 07:48:53,947 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 11 predicate places. [2024-11-17 07:48:53,947 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 300 flow [2024-11-17 07:48:53,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:53,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:53,949 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:53,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:48:54,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-17 07:48:54,150 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:54,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash 454262275, now seen corresponding path program 2 times [2024-11-17 07:48:54,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:54,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790286892] [2024-11-17 07:48:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:48:54,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:54,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790286892] [2024-11-17 07:48:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790286892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:48:54,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957604512] [2024-11-17 07:48:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:54,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:54,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 144 [2024-11-17 07:48:54,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:54,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:54,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 144 [2024-11-17 07:48:54,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:54,539 INFO L124 PetriNetUnfolderBase]: 570/1771 cut-off events. [2024-11-17 07:48:54,539 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-17 07:48:54,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1771 events. 570/1771 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12739 event pairs, 0 based on Foata normal form. 21/1657 useless extension candidates. Maximal degree in co-relation 2859. Up to 1039 conditions per place. [2024-11-17 07:48:54,550 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 98 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-11-17 07:48:54,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 162 transitions, 584 flow [2024-11-17 07:48:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2024-11-17 07:48:54,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-17 07:48:54,552 INFO L175 Difference]: Start difference. First operand has 127 places, 121 transitions, 300 flow. Second operand 4 states and 351 transitions. [2024-11-17 07:48:54,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 162 transitions, 584 flow [2024-11-17 07:48:54,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 162 transitions, 576 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 07:48:54,560 INFO L231 Difference]: Finished difference. Result has 127 places, 119 transitions, 298 flow [2024-11-17 07:48:54,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=119} [2024-11-17 07:48:54,563 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 11 predicate places. [2024-11-17 07:48:54,563 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 119 transitions, 298 flow [2024-11-17 07:48:54,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:54,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:54,564 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:54,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:48:54,564 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:54,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1249716452, now seen corresponding path program 1 times [2024-11-17 07:48:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590248455] [2024-11-17 07:48:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:54,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:48:54,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:54,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590248455] [2024-11-17 07:48:54,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590248455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927298829] [2024-11-17 07:48:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:54,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:54,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:48:54,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:48:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:54,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:48:54,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:48:54,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:48:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:48:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927298829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:48:55,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:48:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-17 07:48:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251804111] [2024-11-17 07:48:55,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:48:55,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:48:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:48:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:48:55,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2024-11-17 07:48:55,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 65.27777777777777) internal successors, (1175), 18 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:55,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:55,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2024-11-17 07:48:55,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:55,514 INFO L124 PetriNetUnfolderBase]: 551/1803 cut-off events. [2024-11-17 07:48:55,514 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-17 07:48:55,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2933 conditions, 1803 events. 551/1803 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13320 event pairs, 460 based on Foata normal form. 4/1626 useless extension candidates. Maximal degree in co-relation 2836. Up to 1034 conditions per place. [2024-11-17 07:48:55,525 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 50 selfloop transitions, 15 changer transitions 0/127 dead transitions. [2024-11-17 07:48:55,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 492 flow [2024-11-17 07:48:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:48:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:48:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1029 transitions. [2024-11-17 07:48:55,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47638888888888886 [2024-11-17 07:48:55,529 INFO L175 Difference]: Start difference. First operand has 127 places, 119 transitions, 298 flow. Second operand 15 states and 1029 transitions. [2024-11-17 07:48:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 492 flow [2024-11-17 07:48:55,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 127 transitions, 486 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:48:55,534 INFO L231 Difference]: Finished difference. Result has 142 places, 127 transitions, 405 flow [2024-11-17 07:48:55,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=405, PETRI_PLACES=142, PETRI_TRANSITIONS=127} [2024-11-17 07:48:55,535 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 26 predicate places. [2024-11-17 07:48:55,535 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 127 transitions, 405 flow [2024-11-17 07:48:55,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.27777777777777) internal successors, (1175), 18 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:55,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:55,537 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:55,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:48:55,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:55,738 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:55,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash 365187356, now seen corresponding path program 2 times [2024-11-17 07:48:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:55,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713469161] [2024-11-17 07:48:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:55,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:48:56,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713469161] [2024-11-17 07:48:56,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713469161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511811804] [2024-11-17 07:48:56,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:48:56,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:56,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:56,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:48:56,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:48:56,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:48:56,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:48:56,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 07:48:56,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:48:56,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:48:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:48:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511811804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:48:56,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:48:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-17 07:48:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77057756] [2024-11-17 07:48:56,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:48:56,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 07:48:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 07:48:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-17 07:48:56,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2024-11-17 07:48:56,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 127 transitions, 405 flow. Second operand has 23 states, 23 states have (on average 65.26086956521739) internal successors, (1501), 23 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:56,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:56,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2024-11-17 07:48:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:56,983 INFO L124 PetriNetUnfolderBase]: 551/1815 cut-off events. [2024-11-17 07:48:56,983 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-11-17 07:48:56,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 1815 events. 551/1815 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13338 event pairs, 460 based on Foata normal form. 3/1637 useless extension candidates. Maximal degree in co-relation 2817. Up to 1034 conditions per place. [2024-11-17 07:48:56,995 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 50 selfloop transitions, 21 changer transitions 0/133 dead transitions. [2024-11-17 07:48:56,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 133 transitions, 613 flow [2024-11-17 07:48:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:48:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:48:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1418 transitions. [2024-11-17 07:48:57,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4689153439153439 [2024-11-17 07:48:57,004 INFO L175 Difference]: Start difference. First operand has 142 places, 127 transitions, 405 flow. Second operand 21 states and 1418 transitions. [2024-11-17 07:48:57,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 133 transitions, 613 flow [2024-11-17 07:48:57,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 133 transitions, 595 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-17 07:48:57,009 INFO L231 Difference]: Finished difference. Result has 161 places, 133 transitions, 510 flow [2024-11-17 07:48:57,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=510, PETRI_PLACES=161, PETRI_TRANSITIONS=133} [2024-11-17 07:48:57,011 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 45 predicate places. [2024-11-17 07:48:57,011 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 133 transitions, 510 flow [2024-11-17 07:48:57,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.26086956521739) internal successors, (1501), 23 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:57,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:57,013 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:57,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:48:57,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:57,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:48:57,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:57,218 INFO L85 PathProgramCache]: Analyzing trace with hash -567046714, now seen corresponding path program 3 times [2024-11-17 07:48:57,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:57,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245853128] [2024-11-17 07:48:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:57,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:57,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:57,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:57,331 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:57,332 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-17 07:48:57,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-17 07:48:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-17 07:48:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-17 07:48:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-17 07:48:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-17 07:48:57,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-17 07:48:57,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-17 07:48:57,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-17 07:48:57,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-17 07:48:57,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-17 07:48:57,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-17 07:48:57,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-17 07:48:57,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-17 07:48:57,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-11-17 07:48:57,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-17 07:48:57,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-17 07:48:57,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-17 07:48:57,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-17 07:48:57,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-17 07:48:57,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-17 07:48:57,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-17 07:48:57,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-17 07:48:57,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-17 07:48:57,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-17 07:48:57,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:48:57,338 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-17 07:48:57,340 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:57,340 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:48:57,368 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:48:57,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 202 transitions, 420 flow [2024-11-17 07:48:57,405 INFO L124 PetriNetUnfolderBase]: 77/354 cut-off events. [2024-11-17 07:48:57,405 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:48:57,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 354 events. 77/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1724 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 211. Up to 12 conditions per place. [2024-11-17 07:48:57,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 202 transitions, 420 flow [2024-11-17 07:48:57,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 202 transitions, 420 flow [2024-11-17 07:48:57,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:57,419 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;@4994f453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:57,419 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-17 07:48:57,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:57,421 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:48:57,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:57,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:57,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:48:57,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:48:57,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:57,422 INFO L85 PathProgramCache]: Analyzing trace with hash 28122249, now seen corresponding path program 1 times [2024-11-17 07:48:57,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:57,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801153258] [2024-11-17 07:48:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:57,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:57,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801153258] [2024-11-17 07:48:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801153258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:57,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:57,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:57,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358584459] [2024-11-17 07:48:57,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:57,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:57,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:57,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 202 [2024-11-17 07:48:57,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 202 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:57,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:57,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 202 [2024-11-17 07:48:57,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:02,057 INFO L124 PetriNetUnfolderBase]: 23365/52700 cut-off events. [2024-11-17 07:49:02,057 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-17 07:49:02,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86843 conditions, 52700 events. 23365/52700 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 596709 event pairs, 20319 based on Foata normal form. 16372/63964 useless extension candidates. Maximal degree in co-relation 64306. Up to 34029 conditions per place. [2024-11-17 07:49:02,398 INFO L140 encePairwiseOnDemand]: 160/202 looper letters, 77 selfloop transitions, 3 changer transitions 0/168 dead transitions. [2024-11-17 07:49:02,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 168 transitions, 512 flow [2024-11-17 07:49:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:49:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:49:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-11-17 07:49:02,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5841584158415841 [2024-11-17 07:49:02,403 INFO L175 Difference]: Start difference. First operand has 162 places, 202 transitions, 420 flow. Second operand 4 states and 472 transitions. [2024-11-17 07:49:02,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 168 transitions, 512 flow [2024-11-17 07:49:02,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 168 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:49:02,406 INFO L231 Difference]: Finished difference. Result has 167 places, 168 transitions, 372 flow [2024-11-17 07:49:02,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=167, PETRI_TRANSITIONS=168} [2024-11-17 07:49:02,408 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-17 07:49:02,408 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 168 transitions, 372 flow [2024-11-17 07:49:02,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:02,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:02,409 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:49:02,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:49:02,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:02,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash -155679301, now seen corresponding path program 1 times [2024-11-17 07:49:02,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:02,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121275585] [2024-11-17 07:49:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:02,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121275585] [2024-11-17 07:49:02,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121275585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:49:02,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321435235] [2024-11-17 07:49:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:02,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:02,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:02,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:49:02,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:49:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:02,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:49:02,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:49:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:02,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:49:02,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321435235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:02,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:49:02,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:49:02,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029568594] [2024-11-17 07:49:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:02,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:49:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:49:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:49:02,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 202 [2024-11-17 07:49:02,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 168 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:02,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:02,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 202 [2024-11-17 07:49:02,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:06,829 INFO L124 PetriNetUnfolderBase]: 23365/52699 cut-off events. [2024-11-17 07:49:06,829 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-17 07:49:06,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86853 conditions, 52699 events. 23365/52699 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 596351 event pairs, 20319 based on Foata normal form. 1/47592 useless extension candidates. Maximal degree in co-relation 86833. Up to 34023 conditions per place. [2024-11-17 07:49:07,176 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 73 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2024-11-17 07:49:07,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 526 flow [2024-11-17 07:49:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:49:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:49:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 608 transitions. [2024-11-17 07:49:07,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5016501650165016 [2024-11-17 07:49:07,179 INFO L175 Difference]: Start difference. First operand has 167 places, 168 transitions, 372 flow. Second operand 6 states and 608 transitions. [2024-11-17 07:49:07,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 526 flow [2024-11-17 07:49:07,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:49:07,183 INFO L231 Difference]: Finished difference. Result has 170 places, 167 transitions, 378 flow [2024-11-17 07:49:07,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=170, PETRI_TRANSITIONS=167} [2024-11-17 07:49:07,184 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 8 predicate places. [2024-11-17 07:49:07,184 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 167 transitions, 378 flow [2024-11-17 07:49:07,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:07,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:07,185 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:49:07,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:49:07,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-17 07:49:07,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:07,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash -531090255, now seen corresponding path program 1 times [2024-11-17 07:49:07,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:07,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445963920] [2024-11-17 07:49:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:49:07,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:07,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445963920] [2024-11-17 07:49:07,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445963920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:07,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:49:07,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:49:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571124386] [2024-11-17 07:49:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:07,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:49:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:49:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:49:07,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 202 [2024-11-17 07:49:07,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 167 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:07,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:07,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 202 [2024-11-17 07:49:07,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:11,140 INFO L124 PetriNetUnfolderBase]: 23365/52698 cut-off events. [2024-11-17 07:49:11,141 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-17 07:49:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86854 conditions, 52698 events. 23365/52698 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 596449 event pairs, 20319 based on Foata normal form. 1/47593 useless extension candidates. Maximal degree in co-relation 86828. Up to 34026 conditions per place. [2024-11-17 07:49:11,461 INFO L140 encePairwiseOnDemand]: 199/202 looper letters, 73 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2024-11-17 07:49:11,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 166 transitions, 528 flow [2024-11-17 07:49:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:49:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:49:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-11-17 07:49:11,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.566006600660066 [2024-11-17 07:49:11,464 INFO L175 Difference]: Start difference. First operand has 170 places, 167 transitions, 378 flow. Second operand 3 states and 343 transitions. [2024-11-17 07:49:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 166 transitions, 528 flow [2024-11-17 07:49:11,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 166 transitions, 518 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:49:11,470 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 372 flow [2024-11-17 07:49:11,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2024-11-17 07:49:11,474 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-17 07:49:11,474 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 372 flow [2024-11-17 07:49:11,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:11,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:11,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:11,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:49:11,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:11,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1289784681, now seen corresponding path program 1 times [2024-11-17 07:49:11,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:11,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625281972] [2024-11-17 07:49:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625281972] [2024-11-17 07:49:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625281972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:49:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001153799] [2024-11-17 07:49:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:11,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:11,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:11,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:49:11,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:49:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:11,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:49:11,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:49:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:11,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:49:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:11,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001153799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:49:11,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:49:11,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 07:49:11,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333949932] [2024-11-17 07:49:11,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:49:11,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:49:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:49:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:49:11,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 202 [2024-11-17 07:49:11,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 89.4) internal successors, (894), 10 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:11,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:11,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 202 [2024-11-17 07:49:11,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:15,815 INFO L124 PetriNetUnfolderBase]: 23365/52704 cut-off events. [2024-11-17 07:49:15,815 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-11-17 07:49:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86870 conditions, 52704 events. 23365/52704 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 596771 event pairs, 20319 based on Foata normal form. 2/47600 useless extension candidates. Maximal degree in co-relation 86823. Up to 34025 conditions per place. [2024-11-17 07:49:16,101 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 74 selfloop transitions, 7 changer transitions 0/169 dead transitions. [2024-11-17 07:49:16,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 556 flow [2024-11-17 07:49:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:49:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:49:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2024-11-17 07:49:16,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49434229137199437 [2024-11-17 07:49:16,105 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 372 flow. Second operand 7 states and 699 transitions. [2024-11-17 07:49:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 556 flow [2024-11-17 07:49:16,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:49:16,109 INFO L231 Difference]: Finished difference. Result has 173 places, 169 transitions, 405 flow [2024-11-17 07:49:16,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=173, PETRI_TRANSITIONS=169} [2024-11-17 07:49:16,110 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 11 predicate places. [2024-11-17 07:49:16,110 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 169 transitions, 405 flow [2024-11-17 07:49:16,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.4) internal successors, (894), 10 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:16,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:16,111 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:16,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:49:16,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:16,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:16,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1815350139, now seen corresponding path program 2 times [2024-11-17 07:49:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:16,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673768829] [2024-11-17 07:49:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:49:16,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673768829] [2024-11-17 07:49:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673768829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:16,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:49:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:49:16,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725823777] [2024-11-17 07:49:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:16,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:49:16,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:49:16,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:49:16,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 202 [2024-11-17 07:49:16,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 169 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:16,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:16,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 202 [2024-11-17 07:49:16,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:21,041 INFO L124 PetriNetUnfolderBase]: 27072/60546 cut-off events. [2024-11-17 07:49:21,041 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-11-17 07:49:21,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100245 conditions, 60546 events. 27072/60546 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 1706. Compared 687830 event pairs, 15096 based on Foata normal form. 21/54251 useless extension candidates. Maximal degree in co-relation 100193. Up to 39492 conditions per place. [2024-11-17 07:49:21,358 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 126 selfloop transitions, 3 changer transitions 0/214 dead transitions. [2024-11-17 07:49:21,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 214 transitions, 753 flow [2024-11-17 07:49:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:49:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:49:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2024-11-17 07:49:21,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878712871287128 [2024-11-17 07:49:21,360 INFO L175 Difference]: Start difference. First operand has 173 places, 169 transitions, 405 flow. Second operand 4 states and 475 transitions. [2024-11-17 07:49:21,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 214 transitions, 753 flow [2024-11-17 07:49:21,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 214 transitions, 745 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 07:49:21,364 INFO L231 Difference]: Finished difference. Result has 176 places, 171 transitions, 421 flow [2024-11-17 07:49:21,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=176, PETRI_TRANSITIONS=171} [2024-11-17 07:49:21,365 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 14 predicate places. [2024-11-17 07:49:21,365 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 171 transitions, 421 flow [2024-11-17 07:49:21,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:21,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:21,365 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:21,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:49:21,366 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:21,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash 251271590, now seen corresponding path program 1 times [2024-11-17 07:49:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:21,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683371961] [2024-11-17 07:49:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:21,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:49:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683371961] [2024-11-17 07:49:21,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683371961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:49:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115346155] [2024-11-17 07:49:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:21,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:21,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:49:21,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:49:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:21,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:49:21,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:49:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:49:21,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:49:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:49:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115346155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:49:21,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:49:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-17 07:49:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807476780] [2024-11-17 07:49:21,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:49:21,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:49:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:49:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:49:21,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 202 [2024-11-17 07:49:21,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 171 transitions, 421 flow. Second operand has 18 states, 18 states have (on average 89.33333333333333) internal successors, (1608), 18 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:21,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:21,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 202 [2024-11-17 07:49:21,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:26,314 INFO L124 PetriNetUnfolderBase]: 23362/53037 cut-off events. [2024-11-17 07:49:26,314 INFO L125 PetriNetUnfolderBase]: For 758/1627 co-relation queries the response was YES. [2024-11-17 07:49:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87715 conditions, 53037 events. 23362/53037 cut-off events. For 758/1627 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 603398 event pairs, 20319 based on Foata normal form. 23/47739 useless extension candidates. Maximal degree in co-relation 87616. Up to 33988 conditions per place. [2024-11-17 07:49:26,677 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 75 selfloop transitions, 15 changer transitions 0/179 dead transitions. [2024-11-17 07:49:26,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 179 transitions, 665 flow [2024-11-17 07:49:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:49:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:49:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1413 transitions. [2024-11-17 07:49:26,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46633663366336636 [2024-11-17 07:49:26,681 INFO L175 Difference]: Start difference. First operand has 176 places, 171 transitions, 421 flow. Second operand 15 states and 1413 transitions. [2024-11-17 07:49:26,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 179 transitions, 665 flow [2024-11-17 07:49:26,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:49:26,686 INFO L231 Difference]: Finished difference. Result has 193 places, 179 transitions, 532 flow [2024-11-17 07:49:26,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=532, PETRI_PLACES=193, PETRI_TRANSITIONS=179} [2024-11-17 07:49:26,687 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 31 predicate places. [2024-11-17 07:49:26,687 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 179 transitions, 532 flow [2024-11-17 07:49:26,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 89.33333333333333) internal successors, (1608), 18 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:26,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:26,688 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:26,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:49:26,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:26,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:26,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 19253726, now seen corresponding path program 2 times [2024-11-17 07:49:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233661454] [2024-11-17 07:49:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:49:27,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233661454] [2024-11-17 07:49:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233661454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:49:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400041262] [2024-11-17 07:49:27,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:49:27,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:27,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:27,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:49:27,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:49:27,540 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:49:27,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:49:27,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 07:49:27,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:49:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:49:27,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:49:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:49:27,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400041262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:49:27,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:49:27,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-17 07:49:27,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178471874] [2024-11-17 07:49:27,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:49:27,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 07:49:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 07:49:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-17 07:49:27,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 202 [2024-11-17 07:49:27,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 179 transitions, 532 flow. Second operand has 23 states, 23 states have (on average 89.30434782608695) internal successors, (2054), 23 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:27,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:27,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 202 [2024-11-17 07:49:27,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:32,583 INFO L124 PetriNetUnfolderBase]: 23362/53049 cut-off events. [2024-11-17 07:49:32,583 INFO L125 PetriNetUnfolderBase]: For 996/1865 co-relation queries the response was YES. [2024-11-17 07:49:32,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87767 conditions, 53049 events. 23362/53049 cut-off events. For 996/1865 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 603277 event pairs, 20319 based on Foata normal form. 22/47750 useless extension candidates. Maximal degree in co-relation 87599. Up to 33988 conditions per place. [2024-11-17 07:49:32,986 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 75 selfloop transitions, 21 changer transitions 0/185 dead transitions. [2024-11-17 07:49:32,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 185 transitions, 790 flow [2024-11-17 07:49:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:49:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:49:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1946 transitions. [2024-11-17 07:49:32,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45874587458745875 [2024-11-17 07:49:32,992 INFO L175 Difference]: Start difference. First operand has 193 places, 179 transitions, 532 flow. Second operand 21 states and 1946 transitions. [2024-11-17 07:49:32,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 185 transitions, 790 flow [2024-11-17 07:49:32,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 185 transitions, 772 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-17 07:49:32,997 INFO L231 Difference]: Finished difference. Result has 212 places, 185 transitions, 637 flow [2024-11-17 07:49:32,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=637, PETRI_PLACES=212, PETRI_TRANSITIONS=185} [2024-11-17 07:49:32,999 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 50 predicate places. [2024-11-17 07:49:32,999 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 185 transitions, 637 flow [2024-11-17 07:49:33,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.30434782608695) internal successors, (2054), 23 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:33,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:33,000 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:33,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:49:33,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:49:33,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 07:49:33,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1382411400, now seen corresponding path program 3 times [2024-11-17 07:49:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306243038] [2024-11-17 07:49:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 07:49:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306243038] [2024-11-17 07:49:33,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306243038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:49:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646078378] [2024-11-17 07:49:33,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:49:33,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:33,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:49:33,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:49:33,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 07:49:33,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:49:33,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:49:33,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:49:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 07:49:33,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:49:33,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646078378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:33,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:49:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:49:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496060593] [2024-11-17 07:49:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:33,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:49:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:49:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:49:33,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 202 [2024-11-17 07:49:33,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 185 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:33,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:33,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 202 [2024-11-17 07:49:33,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand