./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/pthread/stack_longer-2.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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:04:15,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:04:15,514 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:04:15,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:04:15,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:04:15,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:04:15,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:04:15,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:04:15,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:04:15,552 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:04:15,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:04:15,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:04:15,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:04:15,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:04:15,554 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:04:15,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:04:15,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:04:15,555 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:04:15,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:04:15,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:04:15,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:04:15,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:04:15,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:04:15,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:04:15,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:04:15,559 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:04:15,559 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:04:15,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:04:15,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:04:15,560 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:04:15,560 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:04:15,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:04:15,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:04:15,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:04:15,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:04:15,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:04:15,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:04:15,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:04:15,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:04:15,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:04:15,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:04:15,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:04:15,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:04:15,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:04:15,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-10 22:04:15,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:04:15,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:04:15,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:04:15,791 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:04:15,791 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:04:15,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-10 22:04:17,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:04:17,480 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:04:17,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-10 22:04:17,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722c20e69/8414eb14b4024fe7a996590e2b4c3436/FLAG3c3ad0a17 [2024-11-10 22:04:17,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722c20e69/8414eb14b4024fe7a996590e2b4c3436 [2024-11-10 22:04:17,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:04:17,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:04:17,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:04:17,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:04:17,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:04:17,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:04:17" (1/1) ... [2024-11-10 22:04:17,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb5c6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:17, skipping insertion in model container [2024-11-10 22:04:17,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:04:17" (1/1) ... [2024-11-10 22:04:17,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:04:17,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:04:17,972 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:04:18,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:04:18,125 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:04:18,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18 WrapperNode [2024-11-10 22:04:18,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:04:18,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:04:18,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:04:18,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:04:18,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,216 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 555 [2024-11-10 22:04:18,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:04:18,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:04:18,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:04:18,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:04:18,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,267 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-11-10 22:04:18,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,291 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:04:18,300 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:04:18,300 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:04:18,301 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:04:18,301 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (1/1) ... [2024-11-10 22:04:18,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:04:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:18,335 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) [2024-11-10 22:04:18,337 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 [2024-11-10 22:04:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:04:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:04:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:04:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:04:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:04:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:04:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:04:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:04:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:04:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:04:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:04:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:04:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:04:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:04:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:04:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:04:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:04:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:04:18,377 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:04:18,490 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:04:18,492 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:04:18,994 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2024-11-10 22:04:18,995 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem37#1; [2024-11-10 22:04:18,995 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret36#1; [2024-11-10 22:04:18,996 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:04:18,996 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:04:22,940 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:04:22,940 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:04:22,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:22 BoogieIcfgContainer [2024-11-10 22:04:22,941 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:04:22,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:04:22,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:04:22,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:04:22,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:04:17" (1/3) ... [2024-11-10 22:04:22,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4812d036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:04:22, skipping insertion in model container [2024-11-10 22:04:22,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:04:18" (2/3) ... [2024-11-10 22:04:22,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4812d036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:04:22, skipping insertion in model container [2024-11-10 22:04:22,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:22" (3/3) ... [2024-11-10 22:04:22,947 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-10 22:04:22,960 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:04:22,961 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 22:04:22,961 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:04:23,020 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:04:23,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 122 flow [2024-11-10 22:04:23,080 INFO L124 PetriNetUnfolderBase]: 7/52 cut-off events. [2024-11-10 22:04:23,081 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:04:23,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 7/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-10 22:04:23,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 54 transitions, 122 flow [2024-11-10 22:04:23,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 50 transitions, 109 flow [2024-11-10 22:04:23,092 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:04:23,097 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;@2bb24a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:04:23,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-10 22:04:23,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:04:23,117 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2024-11-10 22:04:23,117 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:04:23,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:23,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:23,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:23,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1561846473, now seen corresponding path program 1 times [2024-11-10 22:04:23,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:23,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117241939] [2024-11-10 22:04:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:23,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:23,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117241939] [2024-11-10 22:04:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117241939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:23,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562288826] [2024-11-10 22:04:23,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:23,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:23,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:23,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-11-10 22:04:23,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 22:04:23,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:23,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-11-10 22:04:23,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:24,136 INFO L124 PetriNetUnfolderBase]: 730/1508 cut-off events. [2024-11-10 22:04:24,136 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-10 22:04:24,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 1508 events. 730/1508 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8525 event pairs, 224 based on Foata normal form. 129/1443 useless extension candidates. Maximal degree in co-relation 2635. Up to 692 conditions per place. [2024-11-10 22:04:24,148 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-11-10 22:04:24,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 306 flow [2024-11-10 22:04:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-11-10 22:04:24,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-10 22:04:24,160 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 109 flow. Second operand 4 states and 153 transitions. [2024-11-10 22:04:24,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 306 flow [2024-11-10 22:04:24,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:24,166 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 136 flow [2024-11-10 22:04:24,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-10 22:04:24,170 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-10 22:04:24,170 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 136 flow [2024-11-10 22:04:24,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 22:04:24,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:24,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:24,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:04:24,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:24,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1922625354, now seen corresponding path program 1 times [2024-11-10 22:04:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492199512] [2024-11-10 22:04:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:24,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:24,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492199512] [2024-11-10 22:04:24,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492199512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:24,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:24,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:24,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583070374] [2024-11-10 22:04:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:24,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:24,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-10 22:04:24,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-10 22:04:24,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:24,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-10 22:04:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:24,664 INFO L124 PetriNetUnfolderBase]: 1246/2595 cut-off events. [2024-11-10 22:04:24,665 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-11-10 22:04:24,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 2595 events. 1246/2595 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 15887 event pairs, 671 based on Foata normal form. 74/2467 useless extension candidates. Maximal degree in co-relation 4454. Up to 1411 conditions per place. [2024-11-10 22:04:24,680 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 72 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-10 22:04:24,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 92 transitions, 409 flow [2024-11-10 22:04:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:04:24,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6712962962962963 [2024-11-10 22:04:24,682 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 136 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:04:24,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 92 transitions, 409 flow [2024-11-10 22:04:24,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 409 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:04:24,685 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 160 flow [2024-11-10 22:04:24,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-10 22:04:24,686 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-10 22:04:24,686 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 160 flow [2024-11-10 22:04:24,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-10 22:04:24,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:24,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:24,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:04:24,687 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:24,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 180345274, now seen corresponding path program 1 times [2024-11-10 22:04:24,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:24,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502388354] [2024-11-10 22:04:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:24,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502388354] [2024-11-10 22:04:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502388354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:24,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149753723] [2024-11-10 22:04:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:24,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:24,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-10 22:04:24,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 22:04:24,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:24,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-10 22:04:24,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:25,283 INFO L124 PetriNetUnfolderBase]: 1798/3724 cut-off events. [2024-11-10 22:04:25,283 INFO L125 PetriNetUnfolderBase]: For 1001/1015 co-relation queries the response was YES. [2024-11-10 22:04:25,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 3724 events. 1798/3724 cut-off events. For 1001/1015 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25163 event pairs, 903 based on Foata normal form. 82/3667 useless extension candidates. Maximal degree in co-relation 7378. Up to 2115 conditions per place. [2024-11-10 22:04:25,302 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 73 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2024-11-10 22:04:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 445 flow [2024-11-10 22:04:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-10 22:04:25,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-11-10 22:04:25,307 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 160 flow. Second operand 4 states and 146 transitions. [2024-11-10 22:04:25,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 445 flow [2024-11-10 22:04:25,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:25,313 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 182 flow [2024-11-10 22:04:25,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-10 22:04:25,314 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-11-10 22:04:25,314 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 182 flow [2024-11-10 22:04:25,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 22:04:25,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:25,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:25,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:04:25,315 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:25,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -338134872, now seen corresponding path program 1 times [2024-11-10 22:04:25,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:25,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695417668] [2024-11-10 22:04:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695417668] [2024-11-10 22:04:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695417668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:25,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91977119] [2024-11-10 22:04:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:25,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:04:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:04:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:04:25,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-11-10 22:04:25,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:25,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:25,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-11-10 22:04:25,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:25,709 INFO L124 PetriNetUnfolderBase]: 898/2079 cut-off events. [2024-11-10 22:04:25,710 INFO L125 PetriNetUnfolderBase]: For 901/1009 co-relation queries the response was YES. [2024-11-10 22:04:25,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 2079 events. 898/2079 cut-off events. For 901/1009 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 13105 event pairs, 285 based on Foata normal form. 76/2080 useless extension candidates. Maximal degree in co-relation 3685. Up to 946 conditions per place. [2024-11-10 22:04:25,721 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 46 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-10 22:04:25,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 338 flow [2024-11-10 22:04:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-10 22:04:25,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:04:25,722 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 182 flow. Second operand 3 states and 108 transitions. [2024-11-10 22:04:25,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 338 flow [2024-11-10 22:04:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:25,726 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 181 flow [2024-11-10 22:04:25,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-10 22:04:25,727 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2024-11-10 22:04:25,727 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 181 flow [2024-11-10 22:04:25,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:25,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:25,728 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:25,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:04:25,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:25,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1906835231, now seen corresponding path program 1 times [2024-11-10 22:04:25,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356518285] [2024-11-10 22:04:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:25,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356518285] [2024-11-10 22:04:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356518285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550493492] [2024-11-10 22:04:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:25,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:25,873 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) [2024-11-10 22:04:25,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:04:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:26,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:04:26,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:26,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550493492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:04:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190996242] [2024-11-10 22:04:26,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:26,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:04:26,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:04:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:04:26,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-10 22:04:26,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:26,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:26,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-10 22:04:26,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:26,424 INFO L124 PetriNetUnfolderBase]: 931/2095 cut-off events. [2024-11-10 22:04:26,424 INFO L125 PetriNetUnfolderBase]: For 935/1041 co-relation queries the response was YES. [2024-11-10 22:04:26,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 2095 events. 931/2095 cut-off events. For 935/1041 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12773 event pairs, 189 based on Foata normal form. 70/2107 useless extension candidates. Maximal degree in co-relation 2696. Up to 735 conditions per place. [2024-11-10 22:04:26,437 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 87 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2024-11-10 22:04:26,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 583 flow [2024-11-10 22:04:26,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:04:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:04:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-11-10 22:04:26,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-10 22:04:26,439 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 181 flow. Second operand 7 states and 216 transitions. [2024-11-10 22:04:26,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 583 flow [2024-11-10 22:04:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:26,443 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 237 flow [2024-11-10 22:04:26,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-11-10 22:04:26,444 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2024-11-10 22:04:26,444 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 237 flow [2024-11-10 22:04:26,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:26,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:26,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:26,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:04:26,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:26,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:26,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash 240577355, now seen corresponding path program 1 times [2024-11-10 22:04:26,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:26,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881237664] [2024-11-10 22:04:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:26,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881237664] [2024-11-10 22:04:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881237664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:26,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375890051] [2024-11-10 22:04:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:26,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:26,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-10 22:04:26,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-10 22:04:26,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:26,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-10 22:04:26,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:27,108 INFO L124 PetriNetUnfolderBase]: 1173/2763 cut-off events. [2024-11-10 22:04:27,109 INFO L125 PetriNetUnfolderBase]: For 2005/2127 co-relation queries the response was YES. [2024-11-10 22:04:27,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6817 conditions, 2763 events. 1173/2763 cut-off events. For 2005/2127 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 18727 event pairs, 646 based on Foata normal form. 26/2769 useless extension candidates. Maximal degree in co-relation 5300. Up to 1363 conditions per place. [2024-11-10 22:04:27,127 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 63 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-10 22:04:27,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 496 flow [2024-11-10 22:04:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-10 22:04:27,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-11-10 22:04:27,129 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 237 flow. Second operand 4 states and 131 transitions. [2024-11-10 22:04:27,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 496 flow [2024-11-10 22:04:27,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 488 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:27,134 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 279 flow [2024-11-10 22:04:27,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-11-10 22:04:27,135 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 22 predicate places. [2024-11-10 22:04:27,135 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 279 flow [2024-11-10 22:04:27,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-10 22:04:27,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:27,136 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:27,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:04:27,136 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:27,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1017648820, now seen corresponding path program 1 times [2024-11-10 22:04:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077328536] [2024-11-10 22:04:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:27,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077328536] [2024-11-10 22:04:27,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077328536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:27,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996677883] [2024-11-10 22:04:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:27,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:27,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:27,348 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) [2024-11-10 22:04:27,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:04:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:27,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:04:27,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996677883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:27,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:27,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:04:27,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144157039] [2024-11-10 22:04:27,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:27,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:04:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:04:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:04:27,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-10 22:04:27,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 279 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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) [2024-11-10 22:04:27,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:27,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-10 22:04:27,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:28,343 INFO L124 PetriNetUnfolderBase]: 2547/5825 cut-off events. [2024-11-10 22:04:28,344 INFO L125 PetriNetUnfolderBase]: For 6888/7322 co-relation queries the response was YES. [2024-11-10 22:04:28,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14946 conditions, 5825 events. 2547/5825 cut-off events. For 6888/7322 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 41129 event pairs, 407 based on Foata normal form. 151/5964 useless extension candidates. Maximal degree in co-relation 7953. Up to 1167 conditions per place. [2024-11-10 22:04:28,381 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 191 selfloop transitions, 33 changer transitions 0/240 dead transitions. [2024-11-10 22:04:28,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 240 transitions, 1490 flow [2024-11-10 22:04:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:04:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:04:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 490 transitions. [2024-11-10 22:04:28,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-11-10 22:04:28,383 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 279 flow. Second operand 16 states and 490 transitions. [2024-11-10 22:04:28,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 240 transitions, 1490 flow [2024-11-10 22:04:28,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 240 transitions, 1478 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:28,391 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 606 flow [2024-11-10 22:04:28,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=606, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-10 22:04:28,392 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2024-11-10 22:04:28,392 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 606 flow [2024-11-10 22:04:28,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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) [2024-11-10 22:04:28,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:28,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:28,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:04:28,593 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,SelfDestructingSolverStorable6 [2024-11-10 22:04:28,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:28,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2056207614, now seen corresponding path program 1 times [2024-11-10 22:04:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290801750] [2024-11-10 22:04:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:28,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:28,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290801750] [2024-11-10 22:04:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290801750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204068508] [2024-11-10 22:04:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:28,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:28,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:28,723 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) [2024-11-10 22:04:28,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:04:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:28,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:04:28,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:28,939 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:28,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204068508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:28,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:28,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-10 22:04:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717135677] [2024-11-10 22:04:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:28,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:04:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:04:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:04:28,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-10 22:04:28,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2024-11-10 22:04:28,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:28,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-10 22:04:28,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:29,789 INFO L124 PetriNetUnfolderBase]: 3551/7475 cut-off events. [2024-11-10 22:04:29,790 INFO L125 PetriNetUnfolderBase]: For 11010/11212 co-relation queries the response was YES. [2024-11-10 22:04:29,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20224 conditions, 7475 events. 3551/7475 cut-off events. For 11010/11212 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 52285 event pairs, 798 based on Foata normal form. 204/7467 useless extension candidates. Maximal degree in co-relation 17033. Up to 3434 conditions per place. [2024-11-10 22:04:29,832 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 126 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2024-11-10 22:04:29,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 1389 flow [2024-11-10 22:04:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-10 22:04:29,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-10 22:04:29,833 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 606 flow. Second operand 4 states and 129 transitions. [2024-11-10 22:04:29,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 1389 flow [2024-11-10 22:04:29,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1317 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:29,846 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 572 flow [2024-11-10 22:04:29,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-10 22:04:29,847 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-11-10 22:04:29,847 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 572 flow [2024-11-10 22:04:29,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2024-11-10 22:04:29,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:29,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:29,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:04:30,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:30,052 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:30,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash -79762581, now seen corresponding path program 1 times [2024-11-10 22:04:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597235138] [2024-11-10 22:04:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:30,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:30,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597235138] [2024-11-10 22:04:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597235138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:30,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:30,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:04:30,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124456915] [2024-11-10 22:04:30,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:04:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:04:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:04:30,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:30,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-11-10 22:04:30,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:30,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:30,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:30,709 INFO L124 PetriNetUnfolderBase]: 2796/6161 cut-off events. [2024-11-10 22:04:30,709 INFO L125 PetriNetUnfolderBase]: For 11134/11495 co-relation queries the response was YES. [2024-11-10 22:04:30,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17431 conditions, 6161 events. 2796/6161 cut-off events. For 11134/11495 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 43064 event pairs, 564 based on Foata normal form. 39/6190 useless extension candidates. Maximal degree in co-relation 14538. Up to 3403 conditions per place. [2024-11-10 22:04:30,748 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 119 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2024-11-10 22:04:30,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 1113 flow [2024-11-10 22:04:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:04:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:04:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-11-10 22:04:30,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5771604938271605 [2024-11-10 22:04:30,749 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 572 flow. Second operand 6 states and 187 transitions. [2024-11-10 22:04:30,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 1113 flow [2024-11-10 22:04:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:30,764 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 661 flow [2024-11-10 22:04:30,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-10 22:04:30,765 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2024-11-10 22:04:30,765 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 661 flow [2024-11-10 22:04:30,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-11-10 22:04:30,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:30,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:30,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:04:30,766 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:30,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -682072214, now seen corresponding path program 1 times [2024-11-10 22:04:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36386711] [2024-11-10 22:04:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:04:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36386711] [2024-11-10 22:04:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36386711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183048950] [2024-11-10 22:04:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:30,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:30,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-10 22:04:30,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 661 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 22:04:30,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:30,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-10 22:04:30,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:31,658 INFO L124 PetriNetUnfolderBase]: 3393/7448 cut-off events. [2024-11-10 22:04:31,659 INFO L125 PetriNetUnfolderBase]: For 11836/12018 co-relation queries the response was YES. [2024-11-10 22:04:31,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20029 conditions, 7448 events. 3393/7448 cut-off events. For 11836/12018 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 53534 event pairs, 888 based on Foata normal form. 0/7430 useless extension candidates. Maximal degree in co-relation 16932. Up to 2690 conditions per place. [2024-11-10 22:04:31,718 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 144 selfloop transitions, 6 changer transitions 0/176 dead transitions. [2024-11-10 22:04:31,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 176 transitions, 1621 flow [2024-11-10 22:04:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-10 22:04:31,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-10 22:04:31,720 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 661 flow. Second operand 4 states and 129 transitions. [2024-11-10 22:04:31,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 176 transitions, 1621 flow [2024-11-10 22:04:31,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 176 transitions, 1611 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:31,741 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 673 flow [2024-11-10 22:04:31,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-11-10 22:04:31,742 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-10 22:04:31,742 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 673 flow [2024-11-10 22:04:31,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 22:04:31,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:31,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:31,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:04:31,743 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:31,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash 430500050, now seen corresponding path program 1 times [2024-11-10 22:04:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:31,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638446782] [2024-11-10 22:04:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:31,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638446782] [2024-11-10 22:04:31,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638446782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435368229] [2024-11-10 22:04:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:31,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:31,924 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) [2024-11-10 22:04:31,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:04:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:32,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:04:32,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:32,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435368229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-10 22:04:32,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034495546] [2024-11-10 22:04:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:32,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:04:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:32,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:04:32,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:04:32,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-10 22:04:32,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 673 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:32,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:32,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-10 22:04:32,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:32,888 INFO L124 PetriNetUnfolderBase]: 3517/7124 cut-off events. [2024-11-10 22:04:32,888 INFO L125 PetriNetUnfolderBase]: For 15652/15664 co-relation queries the response was YES. [2024-11-10 22:04:32,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21375 conditions, 7124 events. 3517/7124 cut-off events. For 15652/15664 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 48729 event pairs, 1086 based on Foata normal form. 178/7111 useless extension candidates. Maximal degree in co-relation 20451. Up to 4321 conditions per place. [2024-11-10 22:04:32,940 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 97 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-11-10 22:04:32,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 127 transitions, 1093 flow [2024-11-10 22:04:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-10 22:04:32,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-10 22:04:32,941 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 673 flow. Second operand 4 states and 125 transitions. [2024-11-10 22:04:32,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 127 transitions, 1093 flow [2024-11-10 22:04:32,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 1071 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:32,962 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 671 flow [2024-11-10 22:04:32,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=671, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-11-10 22:04:32,963 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-10 22:04:32,963 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 671 flow [2024-11-10 22:04:32,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:32,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:32,964 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:04:32,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:04:33,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:33,165 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:33,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 460600831, now seen corresponding path program 1 times [2024-11-10 22:04:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3439386] [2024-11-10 22:04:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:04:33,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3439386] [2024-11-10 22:04:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3439386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:33,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:33,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:33,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517378519] [2024-11-10 22:04:33,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:33,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:33,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:33,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:33,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:33,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-10 22:04:33,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-11-10 22:04:33,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:33,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-10 22:04:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:33,996 INFO L124 PetriNetUnfolderBase]: 3274/6799 cut-off events. [2024-11-10 22:04:33,996 INFO L125 PetriNetUnfolderBase]: For 13746/13781 co-relation queries the response was YES. [2024-11-10 22:04:34,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20050 conditions, 6799 events. 3274/6799 cut-off events. For 13746/13781 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 46175 event pairs, 837 based on Foata normal form. 178/6906 useless extension candidates. Maximal degree in co-relation 17127. Up to 2981 conditions per place. [2024-11-10 22:04:34,044 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 108 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2024-11-10 22:04:34,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1221 flow [2024-11-10 22:04:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-10 22:04:34,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-10 22:04:34,046 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 671 flow. Second operand 4 states and 129 transitions. [2024-11-10 22:04:34,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1221 flow [2024-11-10 22:04:34,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:34,072 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 677 flow [2024-11-10 22:04:34,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=677, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-11-10 22:04:34,073 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-10 22:04:34,073 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 677 flow [2024-11-10 22:04:34,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-11-10 22:04:34,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:34,074 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:34,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:04:34,074 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:34,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1759139505, now seen corresponding path program 1 times [2024-11-10 22:04:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727253877] [2024-11-10 22:04:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727253877] [2024-11-10 22:04:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727253877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:04:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733322615] [2024-11-10 22:04:34,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:34,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:04:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:04:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:04:34,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:34,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 677 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-10 22:04:34,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:34,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:34,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:34,824 INFO L124 PetriNetUnfolderBase]: 2862/6203 cut-off events. [2024-11-10 22:04:34,824 INFO L125 PetriNetUnfolderBase]: For 14383/14383 co-relation queries the response was YES. [2024-11-10 22:04:34,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18591 conditions, 6203 events. 2862/6203 cut-off events. For 14383/14383 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 43606 event pairs, 455 based on Foata normal form. 104/6300 useless extension candidates. Maximal degree in co-relation 15586. Up to 3054 conditions per place. [2024-11-10 22:04:34,863 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 85 selfloop transitions, 35 changer transitions 0/133 dead transitions. [2024-11-10 22:04:34,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1102 flow [2024-11-10 22:04:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:04:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:04:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-11-10 22:04:34,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-10 22:04:34,865 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 677 flow. Second operand 7 states and 190 transitions. [2024-11-10 22:04:34,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1102 flow [2024-11-10 22:04:34,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 1078 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:34,887 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 760 flow [2024-11-10 22:04:34,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=760, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-11-10 22:04:34,888 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2024-11-10 22:04:34,888 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 760 flow [2024-11-10 22:04:34,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-10 22:04:34,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:34,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:34,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:04:34,888 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:34,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash 385735938, now seen corresponding path program 1 times [2024-11-10 22:04:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160653602] [2024-11-10 22:04:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:35,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160653602] [2024-11-10 22:04:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160653602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151456528] [2024-11-10 22:04:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:35,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:35,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:35,070 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) [2024-11-10 22:04:35,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:04:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:35,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:04:35,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:35,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:35,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151456528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:35,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:35,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-10 22:04:35,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136462926] [2024-11-10 22:04:35,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:35,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:04:35,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:04:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:04:35,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:35,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-10 22:04:35,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:35,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:35,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:35,875 INFO L124 PetriNetUnfolderBase]: 2819/6180 cut-off events. [2024-11-10 22:04:35,876 INFO L125 PetriNetUnfolderBase]: For 17669/17669 co-relation queries the response was YES. [2024-11-10 22:04:35,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 6180 events. 2819/6180 cut-off events. For 17669/17669 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 43878 event pairs, 651 based on Foata normal form. 114/6285 useless extension candidates. Maximal degree in co-relation 16205. Up to 2849 conditions per place. [2024-11-10 22:04:35,910 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 87 selfloop transitions, 28 changer transitions 8/136 dead transitions. [2024-11-10 22:04:35,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1238 flow [2024-11-10 22:04:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:04:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:04:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-11-10 22:04:35,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-10 22:04:35,911 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 760 flow. Second operand 7 states and 190 transitions. [2024-11-10 22:04:35,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1238 flow [2024-11-10 22:04:35,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1219 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:35,934 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 884 flow [2024-11-10 22:04:35,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=884, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-11-10 22:04:35,935 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2024-11-10 22:04:35,935 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 884 flow [2024-11-10 22:04:35,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-10 22:04:35,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:35,936 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:35,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:04:36,136 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,SelfDestructingSolverStorable13 [2024-11-10 22:04:36,136 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:36,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash 879073920, now seen corresponding path program 2 times [2024-11-10 22:04:36,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:36,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073525652] [2024-11-10 22:04:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:04:36,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073525652] [2024-11-10 22:04:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073525652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565019613] [2024-11-10 22:04:36,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:04:36,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:36,335 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) [2024-11-10 22:04:36,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:04:36,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:04:36,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:04:36,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:04:36,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:36,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:36,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565019613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:36,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:36,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-10 22:04:36,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809700081] [2024-11-10 22:04:36,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:36,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:04:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:04:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:04:36,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:36,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 884 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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) [2024-11-10 22:04:36,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:36,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:36,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:37,625 INFO L124 PetriNetUnfolderBase]: 3024/6683 cut-off events. [2024-11-10 22:04:37,625 INFO L125 PetriNetUnfolderBase]: For 24706/24706 co-relation queries the response was YES. [2024-11-10 22:04:37,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21343 conditions, 6683 events. 3024/6683 cut-off events. For 24706/24706 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 46860 event pairs, 483 based on Foata normal form. 68/6734 useless extension candidates. Maximal degree in co-relation 18907. Up to 1421 conditions per place. [2024-11-10 22:04:37,673 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 185 selfloop transitions, 52 changer transitions 0/250 dead transitions. [2024-11-10 22:04:37,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 250 transitions, 2257 flow [2024-11-10 22:04:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:04:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:04:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 419 transitions. [2024-11-10 22:04:37,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172839506172839 [2024-11-10 22:04:37,676 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 884 flow. Second operand 15 states and 419 transitions. [2024-11-10 22:04:37,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 250 transitions, 2257 flow [2024-11-10 22:04:37,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 250 transitions, 2240 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:37,714 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1354 flow [2024-11-10 22:04:37,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1354, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-11-10 22:04:37,715 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-11-10 22:04:37,715 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1354 flow [2024-11-10 22:04:37,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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) [2024-11-10 22:04:37,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:37,715 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-10 22:04:37,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:04:37,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:04:37,916 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:37,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:37,916 INFO L85 PathProgramCache]: Analyzing trace with hash 41263764, now seen corresponding path program 2 times [2024-11-10 22:04:37,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:37,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107780576] [2024-11-10 22:04:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:37,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107780576] [2024-11-10 22:04:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107780576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941091230] [2024-11-10 22:04:38,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:04:38,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:38,232 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) [2024-11-10 22:04:38,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:04:38,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:04:38,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:04:38,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:04:38,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:38,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941091230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:38,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:38,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-10 22:04:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054421595] [2024-11-10 22:04:38,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:38,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 22:04:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 22:04:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-10 22:04:38,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-10 22:04:38,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1354 flow. Second operand has 24 states, 24 states have (on average 22.541666666666668) internal successors, (541), 24 states have internal predecessors, (541), 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) [2024-11-10 22:04:38,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:38,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-10 22:04:38,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:40,753 INFO L124 PetriNetUnfolderBase]: 5288/11747 cut-off events. [2024-11-10 22:04:40,754 INFO L125 PetriNetUnfolderBase]: For 55756/55756 co-relation queries the response was YES. [2024-11-10 22:04:40,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38708 conditions, 11747 events. 5288/11747 cut-off events. For 55756/55756 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 81837 event pairs, 1005 based on Foata normal form. 234/11966 useless extension candidates. Maximal degree in co-relation 31147. Up to 2603 conditions per place. [2024-11-10 22:04:40,868 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 357 selfloop transitions, 76 changer transitions 0/446 dead transitions. [2024-11-10 22:04:40,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 446 transitions, 4257 flow [2024-11-10 22:04:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:04:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:04:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 769 transitions. [2024-11-10 22:04:40,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933641975308642 [2024-11-10 22:04:40,872 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1354 flow. Second operand 24 states and 769 transitions. [2024-11-10 22:04:40,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 446 transitions, 4257 flow [2024-11-10 22:04:40,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 446 transitions, 4233 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:40,963 INFO L231 Difference]: Finished difference. Result has 146 places, 152 transitions, 2185 flow [2024-11-10 22:04:40,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2185, PETRI_PLACES=146, PETRI_TRANSITIONS=152} [2024-11-10 22:04:40,965 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2024-11-10 22:04:40,969 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 152 transitions, 2185 flow [2024-11-10 22:04:40,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.541666666666668) internal successors, (541), 24 states have internal predecessors, (541), 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) [2024-11-10 22:04:40,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:40,970 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:40,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:04:41,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:41,171 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:41,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1283430730, now seen corresponding path program 3 times [2024-11-10 22:04:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563215590] [2024-11-10 22:04:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:41,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563215590] [2024-11-10 22:04:41,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563215590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292022538] [2024-11-10 22:04:41,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:04:41,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:41,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:41,579 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) [2024-11-10 22:04:41,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:04:41,814 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-10 22:04:41,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:04:41,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:04:41,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:41,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292022538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:42,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:42,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-10 22:04:42,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093892204] [2024-11-10 22:04:42,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:42,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:04:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:04:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:04:42,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:42,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 152 transitions, 2185 flow. Second operand has 22 states, 22 states have (on average 21.09090909090909) internal successors, (464), 22 states have internal predecessors, (464), 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) [2024-11-10 22:04:42,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:42,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:42,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:44,580 INFO L124 PetriNetUnfolderBase]: 7243/15870 cut-off events. [2024-11-10 22:04:44,581 INFO L125 PetriNetUnfolderBase]: For 90790/90794 co-relation queries the response was YES. [2024-11-10 22:04:44,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54281 conditions, 15870 events. 7243/15870 cut-off events. For 90790/90794 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 117022 event pairs, 767 based on Foata normal form. 108/15965 useless extension candidates. Maximal degree in co-relation 51381. Up to 2506 conditions per place. [2024-11-10 22:04:44,781 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 307 selfloop transitions, 141 changer transitions 0/461 dead transitions. [2024-11-10 22:04:44,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 461 transitions, 5138 flow [2024-11-10 22:04:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:04:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:04:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 725 transitions. [2024-11-10 22:04:44,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163817663817664 [2024-11-10 22:04:44,786 INFO L175 Difference]: Start difference. First operand has 146 places, 152 transitions, 2185 flow. Second operand 26 states and 725 transitions. [2024-11-10 22:04:44,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 461 transitions, 5138 flow [2024-11-10 22:04:44,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 461 transitions, 5018 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-11-10 22:04:44,957 INFO L231 Difference]: Finished difference. Result has 174 places, 208 transitions, 3447 flow [2024-11-10 22:04:44,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3447, PETRI_PLACES=174, PETRI_TRANSITIONS=208} [2024-11-10 22:04:44,958 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 124 predicate places. [2024-11-10 22:04:44,958 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 208 transitions, 3447 flow [2024-11-10 22:04:44,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 21.09090909090909) internal successors, (464), 22 states have internal predecessors, (464), 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) [2024-11-10 22:04:44,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:44,959 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:44,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:04:45,162 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,SelfDestructingSolverStorable16 [2024-11-10 22:04:45,163 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:45,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash 425889082, now seen corresponding path program 4 times [2024-11-10 22:04:45,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:45,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472783036] [2024-11-10 22:04:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:45,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:45,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472783036] [2024-11-10 22:04:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472783036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151532689] [2024-11-10 22:04:45,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:04:45,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:45,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:45,605 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) [2024-11-10 22:04:45,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:04:45,802 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:04:45,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:04:45,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 22:04:45,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:45,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151532689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:46,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-11-10 22:04:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721074331] [2024-11-10 22:04:46,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:46,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-10 22:04:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-10 22:04:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-11-10 22:04:46,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:46,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 208 transitions, 3447 flow. Second operand has 30 states, 30 states have (on average 21.066666666666666) internal successors, (632), 30 states have internal predecessors, (632), 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) [2024-11-10 22:04:46,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:46,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:46,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:50,571 INFO L124 PetriNetUnfolderBase]: 10036/21933 cut-off events. [2024-11-10 22:04:50,571 INFO L125 PetriNetUnfolderBase]: For 158050/158054 co-relation queries the response was YES. [2024-11-10 22:04:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77603 conditions, 21933 events. 10036/21933 cut-off events. For 158050/158054 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 169483 event pairs, 971 based on Foata normal form. 218/22132 useless extension candidates. Maximal degree in co-relation 76203. Up to 3481 conditions per place. [2024-11-10 22:04:50,740 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 420 selfloop transitions, 222 changer transitions 0/655 dead transitions. [2024-11-10 22:04:50,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 655 transitions, 7784 flow [2024-11-10 22:04:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 22:04:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 22:04:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1030 transitions. [2024-11-10 22:04:50,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5155155155155156 [2024-11-10 22:04:50,742 INFO L175 Difference]: Start difference. First operand has 174 places, 208 transitions, 3447 flow. Second operand 37 states and 1030 transitions. [2024-11-10 22:04:50,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 655 transitions, 7784 flow [2024-11-10 22:04:50,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 655 transitions, 7474 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-11-10 22:04:50,989 INFO L231 Difference]: Finished difference. Result has 212 places, 283 transitions, 5142 flow [2024-11-10 22:04:50,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5142, PETRI_PLACES=212, PETRI_TRANSITIONS=283} [2024-11-10 22:04:50,990 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 162 predicate places. [2024-11-10 22:04:50,990 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 283 transitions, 5142 flow [2024-11-10 22:04:50,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 21.066666666666666) internal successors, (632), 30 states have internal predecessors, (632), 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) [2024-11-10 22:04:50,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:50,991 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:51,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:04:51,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:04:51,191 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:04:51,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1967142314, now seen corresponding path program 5 times [2024-11-10 22:04:51,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:51,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013829492] [2024-11-10 22:04:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:51,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:51,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013829492] [2024-11-10 22:04:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013829492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885522476] [2024-11-10 22:04:51,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 22:04:51,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:51,732 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:04:51,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:04:52,004 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-10 22:04:52,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:04:52,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 22:04:52,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:52,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:04:52,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885522476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:52,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:52,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2024-11-10 22:04:52,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518673678] [2024-11-10 22:04:52,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:52,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-10 22:04:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-10 22:04:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 22:04:52,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:04:52,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 283 transitions, 5142 flow. Second operand has 38 states, 38 states have (on average 21.05263157894737) internal successors, (800), 38 states have internal predecessors, (800), 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) [2024-11-10 22:04:52,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:52,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:04:52,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:59,265 INFO L124 PetriNetUnfolderBase]: 14157/30926 cut-off events. [2024-11-10 22:04:59,266 INFO L125 PetriNetUnfolderBase]: For 259028/259034 co-relation queries the response was YES. [2024-11-10 22:04:59,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112092 conditions, 30926 events. 14157/30926 cut-off events. For 259028/259034 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 245046 event pairs, 1285 based on Foata normal form. 316/31223 useless extension candidates. Maximal degree in co-relation 110309. Up to 4918 conditions per place. [2024-11-10 22:04:59,669 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 542 selfloop transitions, 323 changer transitions 0/878 dead transitions. [2024-11-10 22:04:59,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 878 transitions, 11210 flow [2024-11-10 22:04:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-10 22:04:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-10 22:04:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1335 transitions. [2024-11-10 22:04:59,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5150462962962963 [2024-11-10 22:04:59,672 INFO L175 Difference]: Start difference. First operand has 212 places, 283 transitions, 5142 flow. Second operand 48 states and 1335 transitions. [2024-11-10 22:04:59,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 878 transitions, 11210 flow [2024-11-10 22:05:00,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 878 transitions, 10653 flow, removed 265 selfloop flow, removed 6 redundant places. [2024-11-10 22:05:00,204 INFO L231 Difference]: Finished difference. Result has 265 places, 389 transitions, 7630 flow [2024-11-10 22:05:00,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4760, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7630, PETRI_PLACES=265, PETRI_TRANSITIONS=389} [2024-11-10 22:05:00,205 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 215 predicate places. [2024-11-10 22:05:00,205 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 389 transitions, 7630 flow [2024-11-10 22:05:00,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 21.05263157894737) internal successors, (800), 38 states have internal predecessors, (800), 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) [2024-11-10 22:05:00,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:00,205 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:00,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:05:00,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:00,410 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:00,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1701077696, now seen corresponding path program 1 times [2024-11-10 22:05:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:00,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707591295] [2024-11-10 22:05:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-10 22:05:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707591295] [2024-11-10 22:05:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707591295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638507968] [2024-11-10 22:05:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:00,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:00,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:05:00,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:05:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:01,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 22:05:01,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 22:05:01,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:05:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 22:05:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638507968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:05:01,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:05:01,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2024-11-10 22:05:01,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392761061] [2024-11-10 22:05:01,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:05:01,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 22:05:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 22:05:01,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-10 22:05:01,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:05:01,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 389 transitions, 7630 flow. Second operand has 26 states, 26 states have (on average 21.692307692307693) internal successors, (564), 26 states have internal predecessors, (564), 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) [2024-11-10 22:05:01,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:01,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:05:01,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:05:13,756 INFO L124 PetriNetUnfolderBase]: 24095/53266 cut-off events. [2024-11-10 22:05:13,756 INFO L125 PetriNetUnfolderBase]: For 459980/459980 co-relation queries the response was YES. [2024-11-10 22:05:14,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196027 conditions, 53266 events. 24095/53266 cut-off events. For 459980/459980 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 488340 event pairs, 3127 based on Foata normal form. 324/53543 useless extension candidates. Maximal degree in co-relation 188699. Up to 10645 conditions per place. [2024-11-10 22:05:14,740 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 441 selfloop transitions, 604 changer transitions 0/1058 dead transitions. [2024-11-10 22:05:14,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1058 transitions, 19409 flow [2024-11-10 22:05:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-10 22:05:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-10 22:05:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 759 transitions. [2024-11-10 22:05:14,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5205761316872428 [2024-11-10 22:05:14,751 INFO L175 Difference]: Start difference. First operand has 265 places, 389 transitions, 7630 flow. Second operand 27 states and 759 transitions. [2024-11-10 22:05:14,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1058 transitions, 19409 flow [2024-11-10 22:05:16,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1058 transitions, 18647 flow, removed 323 selfloop flow, removed 10 redundant places. [2024-11-10 22:05:16,978 INFO L231 Difference]: Finished difference. Result has 294 places, 788 transitions, 17298 flow [2024-11-10 22:05:16,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17298, PETRI_PLACES=294, PETRI_TRANSITIONS=788} [2024-11-10 22:05:16,979 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 244 predicate places. [2024-11-10 22:05:16,980 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 788 transitions, 17298 flow [2024-11-10 22:05:16,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 21.692307692307693) internal successors, (564), 26 states have internal predecessors, (564), 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) [2024-11-10 22:05:16,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:16,981 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:17,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 22:05:17,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:17,185 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-10 22:05:17,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1990676686, now seen corresponding path program 6 times [2024-11-10 22:05:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:17,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711288856] [2024-11-10 22:05:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:05:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:05:18,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:05:18,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711288856] [2024-11-10 22:05:18,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711288856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:05:18,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082523430] [2024-11-10 22:05:18,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 22:05:18,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:18,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:18,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:05:18,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:05:19,416 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-10 22:05:19,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:05:19,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 22:05:19,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:05:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:05:19,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:05:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:05:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082523430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:05:19,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:05:19,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-11-10 22:05:19,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037721128] [2024-11-10 22:05:19,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:05:19,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-10 22:05:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:05:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-10 22:05:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 22:05:20,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-10 22:05:20,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 788 transitions, 17298 flow. Second operand has 46 states, 46 states have (on average 21.043478260869566) internal successors, (968), 46 states have internal predecessors, (968), 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) [2024-11-10 22:05:20,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:20,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-10 22:05:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand