./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 8be7027f 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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:39:36,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:39:36,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:39:36,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:39:36,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:39:36,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:39:36,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:39:36,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:39:36,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:39:36,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:39:36,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:39:36,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:39:36,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:39:36,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:39:36,478 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:39:36,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:39:36,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:39:36,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:39:36,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:39:36,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:39:36,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:39:36,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:39:36,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:39:36,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:39:36,485 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:39:36,485 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:39:36,485 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:39:36,486 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:39:36,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:39:36,486 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:39:36,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:39:36,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:39:36,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:39:36,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:39:36,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:39:36,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:39:36,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:39:36,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:39:36,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:39:36,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:39:36,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:39:36,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:39:36,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:39:36,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:39:36,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2024-11-12 20:39:36,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:39:36,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:39:36,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:39:36,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:39:36,757 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:39:36,758 INFO L431 ainManager$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 [2024-11-12 20:39:38,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:39:38,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:39:38,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-12 20:39:38,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42dd24ede/d1907ac9984a49bd83dad2677aa04218/FLAG35b50e4d0 [2024-11-12 20:39:38,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42dd24ede/d1907ac9984a49bd83dad2677aa04218 [2024-11-12 20:39:38,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:39:38,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:39:38,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:39:38,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:39:38,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:39:38,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:38,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549b1e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38, skipping insertion in model container [2024-11-12 20:39:38,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:38,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:39:38,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:39:38,882 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:39:38,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:39:38,991 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:39:38,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38 WrapperNode [2024-11-12 20:39:38,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:39:38,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:39:38,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:39:38,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:39:38,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,052 INFO L138 Inliner]: procedures = 272, calls = 96, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 299 [2024-11-12 20:39:39,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:39:39,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:39:39,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:39:39,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:39:39,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,075 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,089 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2024-11-12 20:39:39,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:39:39,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:39:39,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:39:39,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:39:39,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (1/1) ... [2024-11-12 20:39:39,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:39:39,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:39,140 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) [2024-11-12 20:39:39,142 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 [2024-11-12 20:39:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 20:39:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:39:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 20:39:39,181 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 20:39:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 20:39:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:39:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:39:39,183 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:39:39,293 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:39:39,295 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:39:39,640 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:39:39,640 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:39:39,929 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:39:39,929 INFO L316 CfgBuilder]: Removed 25 assume(true) statements. [2024-11-12 20:39:39,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:39:39 BoogieIcfgContainer [2024-11-12 20:39:39,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:39:39,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:39:39,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:39:39,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:39:39,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:39:38" (1/3) ... [2024-11-12 20:39:39,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aca8965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:39:39, skipping insertion in model container [2024-11-12 20:39:39,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:39:38" (2/3) ... [2024-11-12 20:39:39,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aca8965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:39:39, skipping insertion in model container [2024-11-12 20:39:39,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:39:39" (3/3) ... [2024-11-12 20:39:39,936 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2024-11-12 20:39:39,949 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:39:39,949 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-12 20:39:39,950 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:39:39,997 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-12 20:39:40,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 123 transitions, 253 flow [2024-11-12 20:39:40,080 INFO L124 PetriNetUnfolderBase]: 38/176 cut-off events. [2024-11-12 20:39:40,081 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:39:40,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 38/176 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 736 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2024-11-12 20:39:40,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 123 transitions, 253 flow [2024-11-12 20:39:40,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 122 transitions, 251 flow [2024-11-12 20:39:40,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:39:40,106 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;@694e973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:39:40,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-12 20:39:40,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:39:40,110 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:39:40,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:39:40,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:40,111 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:39:40,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:40,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash 763913, now seen corresponding path program 1 times [2024-11-12 20:39:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846419022] [2024-11-12 20:39:40,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846419022] [2024-11-12 20:39:40,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846419022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:40,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:40,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:39:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126587985] [2024-11-12 20:39:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:40,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:39:40,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:40,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:39:40,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:39:40,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-12 20:39:40,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 122 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2024-11-12 20:39:40,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:40,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-12 20:39:40,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:40,839 INFO L124 PetriNetUnfolderBase]: 575/1803 cut-off events. [2024-11-12 20:39:40,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:39:40,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1803 events. 575/1803 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12744 event pairs, 480 based on Foata normal form. 291/1823 useless extension candidates. Maximal degree in co-relation 2810. Up to 1100 conditions per place. [2024-11-12 20:39:40,859 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 53 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-12 20:39:40,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 327 flow [2024-11-12 20:39:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:39:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:39:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2024-11-12 20:39:40,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5508130081300813 [2024-11-12 20:39:40,875 INFO L175 Difference]: Start difference. First operand has 100 places, 122 transitions, 251 flow. Second operand 4 states and 271 transitions. [2024-11-12 20:39:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 327 flow [2024-11-12 20:39:40,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:39:40,882 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 235 flow [2024-11-12 20:39:40,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-11-12 20:39:40,886 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-12 20:39:40,887 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 235 flow [2024-11-12 20:39:40,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2024-11-12 20:39:40,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:40,887 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:39:40,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:39:40,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:40,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:40,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1283705744, now seen corresponding path program 1 times [2024-11-12 20:39:40,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:40,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798579842] [2024-11-12 20:39:40,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:40,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:40,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:40,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798579842] [2024-11-12 20:39:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798579842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:39:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395892707] [2024-11-12 20:39:40,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:40,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:39:40,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:40,981 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) [2024-11-12 20:39:40,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:39:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:41,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:39:41,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:39:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:41,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:39:41,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395892707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:41,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:39:41,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:39:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865575750] [2024-11-12 20:39:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:41,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:39:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:39:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:39:41,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-12 20:39:41,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 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) [2024-11-12 20:39:41,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:41,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-12 20:39:41,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:41,411 INFO L124 PetriNetUnfolderBase]: 575/1802 cut-off events. [2024-11-12 20:39:41,412 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:39:41,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 1802 events. 575/1802 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12769 event pairs, 480 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 2902. Up to 1095 conditions per place. [2024-11-12 20:39:41,422 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 49 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2024-11-12 20:39:41,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 341 flow [2024-11-12 20:39:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:39:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:39:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-12 20:39:41,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-11-12 20:39:41,425 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 235 flow. Second operand 6 states and 344 transitions. [2024-11-12 20:39:41,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 341 flow [2024-11-12 20:39:41,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:39:41,430 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 241 flow [2024-11-12 20:39:41,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2024-11-12 20:39:41,431 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2024-11-12 20:39:41,432 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 241 flow [2024-11-12 20:39:41,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 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) [2024-11-12 20:39:41,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:41,432 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:39:41,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:39:41,633 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 [2024-11-12 20:39:41,634 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:41,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1140173217, now seen corresponding path program 1 times [2024-11-12 20:39:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:41,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029363147] [2024-11-12 20:39:41,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:41,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:39:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029363147] [2024-11-12 20:39:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029363147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:41,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:41,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:39:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904336210] [2024-11-12 20:39:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:41,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:39:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:39:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:39:41,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-12 20:39:41,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-12 20:39:41,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:41,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-12 20:39:41,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:41,862 INFO L124 PetriNetUnfolderBase]: 575/1801 cut-off events. [2024-11-12 20:39:41,862 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 20:39:41,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2922 conditions, 1801 events. 575/1801 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12743 event pairs, 480 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 2898. Up to 1098 conditions per place. [2024-11-12 20:39:41,869 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 50 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-12 20:39:41,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 345 flow [2024-11-12 20:39:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:39:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:39:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-11-12 20:39:41,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338753387533876 [2024-11-12 20:39:41,871 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 241 flow. Second operand 3 states and 197 transitions. [2024-11-12 20:39:41,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 345 flow [2024-11-12 20:39:41,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 323 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 20:39:41,874 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 223 flow [2024-11-12 20:39:41,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-12 20:39:41,875 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-11-12 20:39:41,875 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 223 flow [2024-11-12 20:39:41,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-12 20:39:41,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:41,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:41,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:39:41,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:41,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash 489313452, now seen corresponding path program 1 times [2024-11-12 20:39:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:41,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523352906] [2024-11-12 20:39:41,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:41,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:41,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523352906] [2024-11-12 20:39:41,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523352906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:39:41,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238706800] [2024-11-12 20:39:41,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:41,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:39:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:41,947 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) [2024-11-12 20:39:41,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:39:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:42,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:39:42,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:39:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:42,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:39:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:42,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238706800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:39:42,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:39:42,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-12 20:39:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304107946] [2024-11-12 20:39:42,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:39:42,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:39:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:39:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:39:42,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-12 20:39:42,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 223 flow. Second operand has 10 states, 10 states have (on average 49.3) internal successors, (493), 10 states have internal predecessors, (493), 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) [2024-11-12 20:39:42,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:42,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-12 20:39:42,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:42,378 INFO L124 PetriNetUnfolderBase]: 575/1805 cut-off events. [2024-11-12 20:39:42,379 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-12 20:39:42,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 1805 events. 575/1805 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12730 event pairs, 480 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 2891. Up to 1096 conditions per place. [2024-11-12 20:39:42,386 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 50 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-12 20:39:42,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 352 flow [2024-11-12 20:39:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:39:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:39:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 395 transitions. [2024-11-12 20:39:42,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45876887340301975 [2024-11-12 20:39:42,388 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 223 flow. Second operand 7 states and 395 transitions. [2024-11-12 20:39:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 352 flow [2024-11-12 20:39:42,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:39:42,390 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 249 flow [2024-11-12 20:39:42,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2024-11-12 20:39:42,391 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2024-11-12 20:39:42,391 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 249 flow [2024-11-12 20:39:42,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.3) internal successors, (493), 10 states have internal predecessors, (493), 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) [2024-11-12 20:39:42,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:42,391 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:42,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:39:42,592 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 [2024-11-12 20:39:42,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:42,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1495311540, now seen corresponding path program 2 times [2024-11-12 20:39:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:42,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269556733] [2024-11-12 20:39:42,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:39:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269556733] [2024-11-12 20:39:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269556733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:42,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:42,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:39:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208138327] [2024-11-12 20:39:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:42,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:39:42,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:39:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:39:42,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-11-12 20:39:42,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-12 20:39:42,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:42,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-11-12 20:39:42,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:42,923 INFO L124 PetriNetUnfolderBase]: 595/1764 cut-off events. [2024-11-12 20:39:42,924 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 20:39:42,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 1764 events. 595/1764 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12352 event pairs, 138 based on Foata normal form. 21/1539 useless extension candidates. Maximal degree in co-relation 2882. Up to 1067 conditions per place. [2024-11-12 20:39:42,931 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 98 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-11-12 20:39:42,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 146 transitions, 533 flow [2024-11-12 20:39:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:39:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:39:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-11-12 20:39:42,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 20:39:42,934 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 249 flow. Second operand 4 states and 287 transitions. [2024-11-12 20:39:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 146 transitions, 533 flow [2024-11-12 20:39:42,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 146 transitions, 529 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:39:42,939 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 251 flow [2024-11-12 20:39:42,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-11-12 20:39:42,941 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2024-11-12 20:39:42,942 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 251 flow [2024-11-12 20:39:42,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-12 20:39:42,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:42,943 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:42,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:39:42,943 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:42,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash 575544587, now seen corresponding path program 1 times [2024-11-12 20:39:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:42,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876840213] [2024-11-12 20:39:42,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:42,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:43,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:43,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876840213] [2024-11-12 20:39:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876840213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:39:43,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288739516] [2024-11-12 20:39:43,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:43,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:39:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:43,083 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) [2024-11-12 20:39:43,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:39:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:43,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:39:43,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:39:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:43,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:39:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288739516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:39:43,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:39:43,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-12 20:39:43,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123698391] [2024-11-12 20:39:43,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:39:43,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:39:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:39:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:39:43,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-12 20:39:43,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 251 flow. Second operand has 18 states, 18 states have (on average 49.22222222222222) internal successors, (886), 18 states have internal predecessors, (886), 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) [2024-11-12 20:39:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:43,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-12 20:39:43,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:43,563 INFO L124 PetriNetUnfolderBase]: 573/1766 cut-off events. [2024-11-12 20:39:43,564 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-12 20:39:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 1766 events. 573/1766 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12226 event pairs, 480 based on Foata normal form. 4/1527 useless extension candidates. Maximal degree in co-relation 2865. Up to 1074 conditions per place. [2024-11-12 20:39:43,572 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 50 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-11-12 20:39:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 111 transitions, 429 flow [2024-11-12 20:39:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:39:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:39:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 789 transitions. [2024-11-12 20:39:43,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4276422764227642 [2024-11-12 20:39:43,577 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 251 flow. Second operand 15 states and 789 transitions. [2024-11-12 20:39:43,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 111 transitions, 429 flow [2024-11-12 20:39:43,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 111 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:39:43,580 INFO L231 Difference]: Finished difference. Result has 124 places, 111 transitions, 342 flow [2024-11-12 20:39:43,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=342, PETRI_PLACES=124, PETRI_TRANSITIONS=111} [2024-11-12 20:39:43,582 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 24 predicate places. [2024-11-12 20:39:43,582 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 111 transitions, 342 flow [2024-11-12 20:39:43,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 49.22222222222222) internal successors, (886), 18 states have internal predecessors, (886), 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) [2024-11-12 20:39:43,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:43,583 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:43,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:39:43,784 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 [2024-11-12 20:39:43,784 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:43,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:43,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1227919413, now seen corresponding path program 2 times [2024-11-12 20:39:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:43,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935640766] [2024-11-12 20:39:43,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935640766] [2024-11-12 20:39:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935640766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:39:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372263057] [2024-11-12 20:39:44,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:39:44,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:39:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:44,030 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) [2024-11-12 20:39:44,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:39:44,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:39:44,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:39:44,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 20:39:44,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:39:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:44,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:39:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372263057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:39:44,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:39:44,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-12 20:39:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062963656] [2024-11-12 20:39:44,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:39:44,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:39:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:39:44,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:39:44,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-12 20:39:44,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 111 transitions, 342 flow. Second operand has 23 states, 23 states have (on average 49.21739130434783) internal successors, (1132), 23 states have internal predecessors, (1132), 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) [2024-11-12 20:39:44,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:44,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-12 20:39:44,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:44,730 INFO L124 PetriNetUnfolderBase]: 573/1775 cut-off events. [2024-11-12 20:39:44,730 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-12 20:39:44,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1775 events. 573/1775 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12227 event pairs, 480 based on Foata normal form. 3/1535 useless extension candidates. Maximal degree in co-relation 2846. Up to 1074 conditions per place. [2024-11-12 20:39:44,738 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 50 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-11-12 20:39:44,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 117 transitions, 538 flow [2024-11-12 20:39:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 20:39:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 20:39:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1082 transitions. [2024-11-12 20:39:44,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.418892760356175 [2024-11-12 20:39:44,742 INFO L175 Difference]: Start difference. First operand has 124 places, 111 transitions, 342 flow. Second operand 21 states and 1082 transitions. [2024-11-12 20:39:44,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 117 transitions, 538 flow [2024-11-12 20:39:44,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 117 transitions, 528 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:39:44,748 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 443 flow [2024-11-12 20:39:44,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=443, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2024-11-12 20:39:44,749 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2024-11-12 20:39:44,749 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 443 flow [2024-11-12 20:39:44,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.21739130434783) internal successors, (1132), 23 states have internal predecessors, (1132), 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) [2024-11-12 20:39:44,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:44,750 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:44,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:39:44,950 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 [2024-11-12 20:39:44,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-12 20:39:44,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1404602748, now seen corresponding path program 3 times [2024-11-12 20:39:44,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:44,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967039717] [2024-11-12 20:39:44,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:44,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:39:44,985 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:39:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:39:45,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:39:45,036 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:39:45,037 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-12 20:39:45,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-12 20:39:45,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-12 20:39:45,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-12 20:39:45,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-12 20:39:45,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-12 20:39:45,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-12 20:39:45,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-12 20:39:45,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-12 20:39:45,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-12 20:39:45,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-12 20:39:45,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:39:45,041 INFO L421 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-12 20:39:45,043 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:39:45,044 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 20:39:45,081 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:39:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 175 transitions, 366 flow [2024-11-12 20:39:45,100 INFO L124 PetriNetUnfolderBase]: 64/300 cut-off events. [2024-11-12 20:39:45,100 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-12 20:39:45,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 300 events. 64/300 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1506 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 178. Up to 12 conditions per place. [2024-11-12 20:39:45,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 175 transitions, 366 flow [2024-11-12 20:39:45,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 175 transitions, 366 flow [2024-11-12 20:39:45,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:39:45,107 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;@694e973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:39:45,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-12 20:39:45,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:39:45,108 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:39:45,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:39:45,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:45,109 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:39:45,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:39:45,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash 937688, now seen corresponding path program 1 times [2024-11-12 20:39:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113446679] [2024-11-12 20:39:45,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113446679] [2024-11-12 20:39:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113446679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:45,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:39:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924911430] [2024-11-12 20:39:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:45,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:39:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:39:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:39:45,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-12 20:39:45,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 175 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-11-12 20:39:45,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:45,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-12 20:39:45,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:48,703 INFO L124 PetriNetUnfolderBase]: 24270/52769 cut-off events. [2024-11-12 20:39:48,703 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-12 20:39:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88276 conditions, 52769 events. 24270/52769 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566956 event pairs, 21160 based on Foata normal form. 9793/54962 useless extension candidates. Maximal degree in co-relation 65647. Up to 35393 conditions per place. [2024-11-12 20:39:48,983 INFO L140 encePairwiseOnDemand]: 139/175 looper letters, 77 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-11-12 20:39:48,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 470 flow [2024-11-12 20:39:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:39:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:39:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2024-11-12 20:39:48,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5442857142857143 [2024-11-12 20:39:48,987 INFO L175 Difference]: Start difference. First operand has 141 places, 175 transitions, 366 flow. Second operand 4 states and 381 transitions. [2024-11-12 20:39:48,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 470 flow [2024-11-12 20:39:48,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 147 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:39:48,989 INFO L231 Difference]: Finished difference. Result has 146 places, 147 transitions, 330 flow [2024-11-12 20:39:48,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2024-11-12 20:39:48,992 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 5 predicate places. [2024-11-12 20:39:48,992 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 330 flow [2024-11-12 20:39:48,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-11-12 20:39:48,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:48,993 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:39:48,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:39:48,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:39:48,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2129124048, now seen corresponding path program 1 times [2024-11-12 20:39:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294332089] [2024-11-12 20:39:48,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294332089] [2024-11-12 20:39:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294332089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:39:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106175633] [2024-11-12 20:39:49,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:39:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:49,046 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) [2024-11-12 20:39:49,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:39:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:49,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:39:49,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:39:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:49,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:39:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106175633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:49,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:39:49,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:39:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732144614] [2024-11-12 20:39:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:49,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:39:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:39:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:39:49,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-12 20:39:49,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 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) [2024-11-12 20:39:49,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:49,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-12 20:39:49,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:52,418 INFO L124 PetriNetUnfolderBase]: 24270/52768 cut-off events. [2024-11-12 20:39:52,418 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-12 20:39:52,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88286 conditions, 52768 events. 24270/52768 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566907 event pairs, 21160 based on Foata normal form. 1/45169 useless extension candidates. Maximal degree in co-relation 88267. Up to 35388 conditions per place. [2024-11-12 20:39:52,758 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 73 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-11-12 20:39:52,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 484 flow [2024-11-12 20:39:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:39:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:39:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 482 transitions. [2024-11-12 20:39:52,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45904761904761904 [2024-11-12 20:39:52,760 INFO L175 Difference]: Start difference. First operand has 146 places, 147 transitions, 330 flow. Second operand 6 states and 482 transitions. [2024-11-12 20:39:52,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 484 flow [2024-11-12 20:39:52,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:39:52,763 INFO L231 Difference]: Finished difference. Result has 149 places, 146 transitions, 336 flow [2024-11-12 20:39:52,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=149, PETRI_TRANSITIONS=146} [2024-11-12 20:39:52,764 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2024-11-12 20:39:52,764 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 146 transitions, 336 flow [2024-11-12 20:39:52,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 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) [2024-11-12 20:39:52,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:52,764 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:39:52,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 20:39:52,965 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 [2024-11-12 20:39:52,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:39:52,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1578335056, now seen corresponding path program 1 times [2024-11-12 20:39:52,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:52,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707187716] [2024-11-12 20:39:52,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:39:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707187716] [2024-11-12 20:39:53,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707187716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:39:53,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:39:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:39:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371356338] [2024-11-12 20:39:53,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:39:53,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:39:53,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:39:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:39:53,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-12 20:39:53,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 146 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-12 20:39:53,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:53,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-12 20:39:53,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:39:56,236 INFO L124 PetriNetUnfolderBase]: 24270/52767 cut-off events. [2024-11-12 20:39:56,236 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-12 20:39:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88288 conditions, 52767 events. 24270/52767 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566968 event pairs, 21160 based on Foata normal form. 1/45169 useless extension candidates. Maximal degree in co-relation 88263. Up to 35391 conditions per place. [2024-11-12 20:39:56,548 INFO L140 encePairwiseOnDemand]: 172/175 looper letters, 74 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2024-11-12 20:39:56,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 145 transitions, 488 flow [2024-11-12 20:39:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:39:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:39:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-12 20:39:56,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295238095238095 [2024-11-12 20:39:56,551 INFO L175 Difference]: Start difference. First operand has 149 places, 146 transitions, 336 flow. Second operand 3 states and 278 transitions. [2024-11-12 20:39:56,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 145 transitions, 488 flow [2024-11-12 20:39:56,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 145 transitions, 466 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 20:39:56,554 INFO L231 Difference]: Finished difference. Result has 144 places, 145 transitions, 318 flow [2024-11-12 20:39:56,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=144, PETRI_TRANSITIONS=145} [2024-11-12 20:39:56,555 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2024-11-12 20:39:56,555 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 145 transitions, 318 flow [2024-11-12 20:39:56,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-12 20:39:56,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:39:56,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:39:56,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:39:56,556 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:39:56,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:39:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash -656967283, now seen corresponding path program 1 times [2024-11-12 20:39:56,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:39:56,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202614743] [2024-11-12 20:39:56,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:39:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:39:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202614743] [2024-11-12 20:39:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202614743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:39:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135438417] [2024-11-12 20:39:56,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:39:56,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:39:56,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:39:56,627 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) [2024-11-12 20:39:56,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:39:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:39:56,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:39:56,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:39:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:56,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:39:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:39:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135438417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:39:56,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:39:56,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-12 20:39:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49571665] [2024-11-12 20:39:56,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:39:56,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:39:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:39:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:39:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:39:56,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-12 20:39:56,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 318 flow. Second operand has 10 states, 10 states have (on average 68.3) internal successors, (683), 10 states have internal predecessors, (683), 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) [2024-11-12 20:39:56,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:39:56,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-12 20:39:56,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:40:00,089 INFO L124 PetriNetUnfolderBase]: 24270/52771 cut-off events. [2024-11-12 20:40:00,090 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-12 20:40:00,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88291 conditions, 52771 events. 24270/52771 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566952 event pairs, 21160 based on Foata normal form. 2/45175 useless extension candidates. Maximal degree in co-relation 88256. Up to 35389 conditions per place. [2024-11-12 20:40:00,339 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 74 selfloop transitions, 7 changer transitions 0/148 dead transitions. [2024-11-12 20:40:00,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 148 transitions, 495 flow [2024-11-12 20:40:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:40:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:40:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2024-11-12 20:40:00,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506122448979592 [2024-11-12 20:40:00,341 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 318 flow. Second operand 7 states and 552 transitions. [2024-11-12 20:40:00,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 148 transitions, 495 flow [2024-11-12 20:40:00,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 148 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:40:00,343 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 344 flow [2024-11-12 20:40:00,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2024-11-12 20:40:00,344 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 9 predicate places. [2024-11-12 20:40:00,344 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 344 flow [2024-11-12 20:40:00,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.3) internal successors, (683), 10 states have internal predecessors, (683), 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) [2024-11-12 20:40:00,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:40:00,345 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-12 20:40:00,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:40:00,545 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 [2024-11-12 20:40:00,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:40:00,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:40:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1253243533, now seen corresponding path program 2 times [2024-11-12 20:40:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:40:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067771406] [2024-11-12 20:40:00,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:40:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:40:00,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:40:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067771406] [2024-11-12 20:40:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067771406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:40:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:40:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:40:00,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357956085] [2024-11-12 20:40:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:40:00,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:40:00,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:40:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:40:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:40:00,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2024-11-12 20:40:00,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 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) [2024-11-12 20:40:00,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:40:00,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2024-11-12 20:40:00,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:40:04,119 INFO L124 PetriNetUnfolderBase]: 26447/54738 cut-off events. [2024-11-12 20:40:04,119 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-12 20:40:04,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93631 conditions, 54738 events. 26447/54738 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1465. Compared 570605 event pairs, 11420 based on Foata normal form. 21/47111 useless extension candidates. Maximal degree in co-relation 93591. Up to 38696 conditions per place. [2024-11-12 20:40:04,403 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 126 selfloop transitions, 3 changer transitions 0/193 dead transitions. [2024-11-12 20:40:04,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 193 transitions, 692 flow [2024-11-12 20:40:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:40:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:40:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2024-11-12 20:40:04,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5585714285714286 [2024-11-12 20:40:04,404 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 344 flow. Second operand 4 states and 391 transitions. [2024-11-12 20:40:04,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 193 transitions, 692 flow [2024-11-12 20:40:04,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:40:04,407 INFO L231 Difference]: Finished difference. Result has 153 places, 150 transitions, 364 flow [2024-11-12 20:40:04,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=153, PETRI_TRANSITIONS=150} [2024-11-12 20:40:04,408 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 12 predicate places. [2024-11-12 20:40:04,408 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 150 transitions, 364 flow [2024-11-12 20:40:04,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 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) [2024-11-12 20:40:04,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:40:04,408 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:40:04,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:40:04,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:40:04,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:40:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1521693614, now seen corresponding path program 1 times [2024-11-12 20:40:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:40:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105111805] [2024-11-12 20:40:04,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:40:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:04,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:40:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105111805] [2024-11-12 20:40:04,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105111805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:40:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635953387] [2024-11-12 20:40:04,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:04,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:40:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:40:04,557 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) [2024-11-12 20:40:04,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:40:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:04,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:40:04,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:40:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:04,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:40:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635953387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:40:04,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:40:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-12 20:40:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364245759] [2024-11-12 20:40:04,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:40:04,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:40:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:40:04,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:40:04,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:40:04,762 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-12 20:40:04,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 150 transitions, 364 flow. Second operand has 18 states, 18 states have (on average 68.27777777777777) internal successors, (1229), 18 states have internal predecessors, (1229), 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) [2024-11-12 20:40:04,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:40:04,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-12 20:40:04,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:40:08,902 INFO L124 PetriNetUnfolderBase]: 24267/53404 cut-off events. [2024-11-12 20:40:08,903 INFO L125 PetriNetUnfolderBase]: For 1130/1988 co-relation queries the response was YES. [2024-11-12 20:40:09,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89879 conditions, 53404 events. 24267/53404 cut-off events. For 1130/1988 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 578477 event pairs, 21160 based on Foata normal form. 23/46152 useless extension candidates. Maximal degree in co-relation 89802. Up to 35346 conditions per place. [2024-11-12 20:40:09,213 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 75 selfloop transitions, 15 changer transitions 0/158 dead transitions. [2024-11-12 20:40:09,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 592 flow [2024-11-12 20:40:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:40:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:40:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1098 transitions. [2024-11-12 20:40:09,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41828571428571426 [2024-11-12 20:40:09,215 INFO L175 Difference]: Start difference. First operand has 153 places, 150 transitions, 364 flow. Second operand 15 states and 1098 transitions. [2024-11-12 20:40:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 592 flow [2024-11-12 20:40:09,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:40:09,220 INFO L231 Difference]: Finished difference. Result has 170 places, 158 transitions, 459 flow [2024-11-12 20:40:09,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=459, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2024-11-12 20:40:09,220 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 29 predicate places. [2024-11-12 20:40:09,220 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 459 flow [2024-11-12 20:40:09,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 68.27777777777777) internal successors, (1229), 18 states have internal predecessors, (1229), 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) [2024-11-12 20:40:09,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:40:09,221 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:40:09,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:40:09,422 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 [2024-11-12 20:40:09,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:40:09,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:40:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash -389828178, now seen corresponding path program 2 times [2024-11-12 20:40:09,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:40:09,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610535890] [2024-11-12 20:40:09,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:40:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:09,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:40:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610535890] [2024-11-12 20:40:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610535890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:40:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983891134] [2024-11-12 20:40:09,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:40:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:40:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:40:09,663 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) [2024-11-12 20:40:09,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:40:09,747 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:40:09,748 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:40:09,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:40:09,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:40:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-12 20:40:09,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:40:09,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983891134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:40:09,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:40:09,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 21 [2024-11-12 20:40:09,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262510274] [2024-11-12 20:40:09,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:40:09,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:40:09,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:40:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:40:09,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:40:09,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2024-11-12 20:40:09,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 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) [2024-11-12 20:40:09,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:40:09,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2024-11-12 20:40:09,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:40:13,509 INFO L124 PetriNetUnfolderBase]: 25078/48186 cut-off events. [2024-11-12 20:40:13,509 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2024-11-12 20:40:13,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87301 conditions, 48186 events. 25078/48186 cut-off events. For 1857/1857 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 471140 event pairs, 819 based on Foata normal form. 441/42554 useless extension candidates. Maximal degree in co-relation 87200. Up to 30745 conditions per place. [2024-11-12 20:40:13,845 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 214 selfloop transitions, 6 changer transitions 0/284 dead transitions. [2024-11-12 20:40:13,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 284 transitions, 1149 flow [2024-11-12 20:40:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:40:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:40:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2024-11-12 20:40:13,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752380952380952 [2024-11-12 20:40:13,851 INFO L175 Difference]: Start difference. First operand has 170 places, 158 transitions, 459 flow. Second operand 6 states and 604 transitions. [2024-11-12 20:40:13,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 284 transitions, 1149 flow [2024-11-12 20:40:13,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 284 transitions, 1139 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:40:13,855 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 457 flow [2024-11-12 20:40:13,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2024-11-12 20:40:13,856 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 29 predicate places. [2024-11-12 20:40:13,856 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 457 flow [2024-11-12 20:40:13,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 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) [2024-11-12 20:40:13,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:40:13,856 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:40:13,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:40:14,060 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 [2024-11-12 20:40:14,061 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:40:14,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:40:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 800229393, now seen corresponding path program 1 times [2024-11-12 20:40:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:40:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758155485] [2024-11-12 20:40:14,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:40:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-12 20:40:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:40:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758155485] [2024-11-12 20:40:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758155485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:40:14,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:40:14,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:40:14,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609778609] [2024-11-12 20:40:14,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:40:14,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:40:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:40:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:40:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:40:14,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2024-11-12 20:40:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:40:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:40:14,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2024-11-12 20:40:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:40:17,639 INFO L124 PetriNetUnfolderBase]: 24198/46455 cut-off events. [2024-11-12 20:40:17,639 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2024-11-12 20:40:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85227 conditions, 46455 events. 24198/46455 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 450889 event pairs, 907 based on Foata normal form. 441/41496 useless extension candidates. Maximal degree in co-relation 85130. Up to 32110 conditions per place. [2024-11-12 20:40:17,955 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 171 selfloop transitions, 6 changer transitions 0/241 dead transitions. [2024-11-12 20:40:17,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 241 transitions, 977 flow [2024-11-12 20:40:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:40:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:40:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-11-12 20:40:17,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-12 20:40:17,956 INFO L175 Difference]: Start difference. First operand has 170 places, 157 transitions, 457 flow. Second operand 4 states and 427 transitions. [2024-11-12 20:40:17,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 241 transitions, 977 flow [2024-11-12 20:40:17,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 241 transitions, 961 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-12 20:40:17,968 INFO L231 Difference]: Finished difference. Result has 168 places, 157 transitions, 457 flow [2024-11-12 20:40:17,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=457, PETRI_PLACES=168, PETRI_TRANSITIONS=157} [2024-11-12 20:40:17,969 INFO L279 CegarLoopForPetriNet]: 141 programPoint places, 27 predicate places. [2024-11-12 20:40:17,969 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 157 transitions, 457 flow [2024-11-12 20:40:17,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:40:17,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:40:17,969 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:40:17,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:40:17,970 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-12 20:40:17,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:40:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash 221330026, now seen corresponding path program 1 times [2024-11-12 20:40:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:40:17,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332208148] [2024-11-12 20:40:17,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:40:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:18,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:40:18,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332208148] [2024-11-12 20:40:18,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332208148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:40:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288393074] [2024-11-12 20:40:18,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:40:18,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:40:18,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:40:18,154 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) [2024-11-12 20:40:18,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:40:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:40:18,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 20:40:18,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:40:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:18,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:40:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:40:18,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288393074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:40:18,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:40:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-12 20:40:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607371640] [2024-11-12 20:40:18,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:40:18,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:40:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:40:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:40:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:40:18,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-12 20:40:18,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 157 transitions, 457 flow. Second operand has 23 states, 23 states have (on average 68.26086956521739) internal successors, (1570), 23 states have internal predecessors, (1570), 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) [2024-11-12 20:40:18,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:40:18,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-12 20:40:18,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand