./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:39:47,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:39:47,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:39:47,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:39:47,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:39:47,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:39:47,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:39:47,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:39:47,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:39:47,392 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:39:47,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:39:47,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:39:47,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:39:47,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:39:47,396 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:39:47,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:39:47,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:39:47,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:39:47,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:39:47,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:39:47,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:39:47,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:39:47,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:39:47,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:39:47,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:39:47,403 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:39:47,403 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:39:47,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:39:47,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:39:47,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:39:47,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:39:47,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:39:47,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:39:47,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:39:47,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:39:47,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:39:47,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:39:47,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:39:47,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:39:47,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:39:47,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:39:47,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:39:47,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:39:47,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:39:47,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-10-24 23:39:47,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:39:47,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:39:47,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:39:47,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:39:47,698 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:39:47,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-10-24 23:39:49,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:39:49,288 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:39:49,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-10-24 23:39:49,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8813738d1/d14330bce0bb4ddb8c191a65bd7b01fa/FLAG53cb789bb [2024-10-24 23:39:49,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8813738d1/d14330bce0bb4ddb8c191a65bd7b01fa [2024-10-24 23:39:49,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:39:49,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:39:49,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:39:49,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:39:49,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:39:49,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:49,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8b4efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49, skipping insertion in model container [2024-10-24 23:39:49,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:49,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:39:49,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:39:49,917 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:39:49,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:39:49,969 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:39:49,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49 WrapperNode [2024-10-24 23:39:49,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:39:49,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:39:49,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:39:49,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:39:49,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:49,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,015 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 206 [2024-10-24 23:39:50,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:39:50,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:39:50,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:39:50,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:39:50,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,051 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 3, 9]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 1, 5]. [2024-10-24 23:39:50,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:39:50,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:39:50,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:39:50,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:39:50,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (1/1) ... [2024-10-24 23:39:50,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:39:50,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:50,120 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) [2024-10-24 23:39:50,127 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 [2024-10-24 23:39:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 23:39:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 23:39:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 23:39:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:39:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:39:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:39:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:39:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:39:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:39:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:39:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 23:39:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 23:39:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 23:39:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 23:39:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:39:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:39:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 23:39:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:39:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:39:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:39:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:39:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:39:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 23:39:50,183 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:39:50,337 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:39:50,340 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:39:50,862 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:39:50,862 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:39:51,189 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:39:51,190 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-24 23:39:51,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:51 BoogieIcfgContainer [2024-10-24 23:39:51,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:39:51,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:39:51,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:39:51,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:39:51,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:39:49" (1/3) ... [2024-10-24 23:39:51,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c0ff8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:51, skipping insertion in model container [2024-10-24 23:39:51,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:49" (2/3) ... [2024-10-24 23:39:51,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c0ff8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:51, skipping insertion in model container [2024-10-24 23:39:51,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:51" (3/3) ... [2024-10-24 23:39:51,199 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-10-24 23:39:51,217 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:39:51,218 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-24 23:39:51,218 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:39:51,298 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:39:51,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 176 flow [2024-10-24 23:39:51,373 INFO L124 PetriNetUnfolderBase]: 8/79 cut-off events. [2024-10-24 23:39:51,373 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:39:51,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 8/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-10-24 23:39:51,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 176 flow [2024-10-24 23:39:51,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 78 transitions, 168 flow [2024-10-24 23:39:51,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:39:51,400 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;@d5dd9c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:39:51,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-24 23:39:51,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:39:51,404 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 23:39:51,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:39:51,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:51,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:39:51,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:51,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 776698, now seen corresponding path program 1 times [2024-10-24 23:39:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:51,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778626063] [2024-10-24 23:39:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 23:39:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228529249] [2024-10-24 23:39:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:51,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:51,541 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) [2024-10-24 23:39:51,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:39:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:51,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:51,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:51,754 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:51,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778626063] [2024-10-24 23:39:51,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 23:39:51,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228529249] [2024-10-24 23:39:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228529249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:51,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:51,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963801756] [2024-10-24 23:39:51,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:51,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:51,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-10-24 23:39:51,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:51,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:51,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-10-24 23:39:51,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:52,234 INFO L124 PetriNetUnfolderBase]: 226/661 cut-off events. [2024-10-24 23:39:52,238 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-24 23:39:52,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 661 events. 226/661 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3866 event pairs, 150 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 446. Up to 199 conditions per place. [2024-10-24 23:39:52,248 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2024-10-24 23:39:52,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 392 flow [2024-10-24 23:39:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2024-10-24 23:39:52,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-10-24 23:39:52,268 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 168 flow. Second operand 5 states and 275 transitions. [2024-10-24 23:39:52,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 392 flow [2024-10-24 23:39:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:39:52,280 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 171 flow [2024-10-24 23:39:52,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-10-24 23:39:52,287 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2024-10-24 23:39:52,287 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 171 flow [2024-10-24 23:39:52,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:52,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:52,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:39:52,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:39:52,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-24 23:39:52,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:52,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 24076230, now seen corresponding path program 1 times [2024-10-24 23:39:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347172905] [2024-10-24 23:39:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 23:39:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710434826] [2024-10-24 23:39:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:52,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:52,515 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) [2024-10-24 23:39:52,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:39:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:52,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:39:52,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:52,625 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347172905] [2024-10-24 23:39:52,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 23:39:52,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710434826] [2024-10-24 23:39:52,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710434826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:52,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:52,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:52,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581224096] [2024-10-24 23:39:52,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:52,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:52,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:52,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-10-24 23:39:52,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:52,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:52,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-10-24 23:39:52,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:52,929 INFO L124 PetriNetUnfolderBase]: 226/651 cut-off events. [2024-10-24 23:39:52,930 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 23:39:52,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 651 events. 226/651 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3821 event pairs, 150 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 532. Up to 200 conditions per place. [2024-10-24 23:39:52,935 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 65 selfloop transitions, 4 changer transitions 1/108 dead transitions. [2024-10-24 23:39:52,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 377 flow [2024-10-24 23:39:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 273 transitions. [2024-10-24 23:39:52,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-10-24 23:39:52,938 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 171 flow. Second operand 5 states and 273 transitions. [2024-10-24 23:39:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 377 flow [2024-10-24 23:39:52,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:39:52,941 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 182 flow [2024-10-24 23:39:52,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-10-24 23:39:52,942 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-24 23:39:52,942 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 182 flow [2024-10-24 23:39:52,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:52,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:52,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:39:52,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:39:53,146 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,SelfDestructingSolverStorable1 [2024-10-24 23:39:53,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:53,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1664522554, now seen corresponding path program 1 times [2024-10-24 23:39:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160118120] [2024-10-24 23:39:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:53,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 23:39:53,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583878894] [2024-10-24 23:39:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:53,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:53,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:53,177 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) [2024-10-24 23:39:53,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:39:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:53,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:39:53,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:53,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:53,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:53,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160118120] [2024-10-24 23:39:53,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 23:39:53,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583878894] [2024-10-24 23:39:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583878894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:53,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:53,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668083658] [2024-10-24 23:39:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:53,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:53,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-10-24 23:39:53,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:53,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-10-24 23:39:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:53,726 INFO L124 PetriNetUnfolderBase]: 226/650 cut-off events. [2024-10-24 23:39:53,727 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-24 23:39:53,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 650 events. 226/650 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3808 event pairs, 150 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 533. Up to 198 conditions per place. [2024-10-24 23:39:53,733 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 64 selfloop transitions, 4 changer transitions 1/107 dead transitions. [2024-10-24 23:39:53,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 107 transitions, 382 flow [2024-10-24 23:39:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2024-10-24 23:39:53,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 23:39:53,736 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 182 flow. Second operand 5 states and 270 transitions. [2024-10-24 23:39:53,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 107 transitions, 382 flow [2024-10-24 23:39:53,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:39:53,741 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 178 flow [2024-10-24 23:39:53,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-10-24 23:39:53,742 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-24 23:39:53,742 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 178 flow [2024-10-24 23:39:53,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:53,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:53,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:53,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:39:53,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:53,948 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:53,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash 60592401, now seen corresponding path program 1 times [2024-10-24 23:39:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:53,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453671041] [2024-10-24 23:39:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:53,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 23:39:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257185175] [2024-10-24 23:39:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:53,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:53,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:53,966 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) [2024-10-24 23:39:53,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:39:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:54,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:39:54,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:54,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453671041] [2024-10-24 23:39:54,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 23:39:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257185175] [2024-10-24 23:39:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257185175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:39:54,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767691724] [2024-10-24 23:39:54,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:54,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:39:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:54,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:39:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:39:54,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:39:54,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:54,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:54,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:39:54,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:54,573 INFO L124 PetriNetUnfolderBase]: 226/649 cut-off events. [2024-10-24 23:39:54,573 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 23:39:54,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 649 events. 226/649 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3758 event pairs, 150 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 534. Up to 196 conditions per place. [2024-10-24 23:39:54,576 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 63 selfloop transitions, 5 changer transitions 1/106 dead transitions. [2024-10-24 23:39:54,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 378 flow [2024-10-24 23:39:54,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:39:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:39:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2024-10-24 23:39:54,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255144032921811 [2024-10-24 23:39:54,578 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 178 flow. Second operand 6 states and 304 transitions. [2024-10-24 23:39:54,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 378 flow [2024-10-24 23:39:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:39:54,581 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 177 flow [2024-10-24 23:39:54,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-10-24 23:39:54,581 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-10-24 23:39:54,582 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 177 flow [2024-10-24 23:39:54,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:54,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:54,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:54,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:39:54,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:54,787 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:54,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash -3795885, now seen corresponding path program 1 times [2024-10-24 23:39:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:54,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987194075] [2024-10-24 23:39:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:55,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987194075] [2024-10-24 23:39:55,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987194075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:55,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:55,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231423282] [2024-10-24 23:39:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:55,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:55,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:55,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:55,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:39:55,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:55,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:55,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:39:55,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:55,193 INFO L124 PetriNetUnfolderBase]: 232/673 cut-off events. [2024-10-24 23:39:55,193 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-24 23:39:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 673 events. 232/673 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3942 event pairs, 150 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 561. Up to 410 conditions per place. [2024-10-24 23:39:55,197 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 40 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-10-24 23:39:55,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 297 flow [2024-10-24 23:39:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-10-24 23:39:55,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2024-10-24 23:39:55,199 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 177 flow. Second operand 4 states and 212 transitions. [2024-10-24 23:39:55,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 297 flow [2024-10-24 23:39:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 281 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-24 23:39:55,202 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 253 flow [2024-10-24 23:39:55,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-10-24 23:39:55,204 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-24 23:39:55,205 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 253 flow [2024-10-24 23:39:55,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:55,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:55,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:55,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:39:55,206 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:55,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1413294371, now seen corresponding path program 1 times [2024-10-24 23:39:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253656525] [2024-10-24 23:39:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:55,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253656525] [2024-10-24 23:39:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253656525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:39:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653026278] [2024-10-24 23:39:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:55,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:55,373 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) [2024-10-24 23:39:55,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:39:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:55,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:55,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:55,489 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:55,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653026278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:55,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:39:55,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:39:55,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978275476] [2024-10-24 23:39:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:55,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:39:55,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:55,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:39:55,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:39:55,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:39:55,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:55,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:55,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:39:55,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:55,682 INFO L124 PetriNetUnfolderBase]: 232/667 cut-off events. [2024-10-24 23:39:55,683 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-10-24 23:39:55,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 667 events. 232/667 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3890 event pairs, 150 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 1033. Up to 380 conditions per place. [2024-10-24 23:39:55,686 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 29 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-10-24 23:39:55,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 337 flow [2024-10-24 23:39:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:39:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:39:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2024-10-24 23:39:55,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843621399176955 [2024-10-24 23:39:55,688 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 253 flow. Second operand 6 states and 284 transitions. [2024-10-24 23:39:55,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 337 flow [2024-10-24 23:39:55,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:39:55,691 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 279 flow [2024-10-24 23:39:55,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2024-10-24 23:39:55,694 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-10-24 23:39:55,695 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 279 flow [2024-10-24 23:39:55,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:55,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:55,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:55,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:39:55,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:55,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:55,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1410682909, now seen corresponding path program 1 times [2024-10-24 23:39:55,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:55,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153415138] [2024-10-24 23:39:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:55,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153415138] [2024-10-24 23:39:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153415138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:39:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682574913] [2024-10-24 23:39:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:56,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:56,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:56,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:56,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-10-24 23:39:56,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:56,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:56,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-10-24 23:39:56,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:56,212 INFO L124 PetriNetUnfolderBase]: 229/653 cut-off events. [2024-10-24 23:39:56,212 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-10-24 23:39:56,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 653 events. 229/653 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3784 event pairs, 150 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 1028. Up to 207 conditions per place. [2024-10-24 23:39:56,216 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 72 selfloop transitions, 6 changer transitions 1/113 dead transitions. [2024-10-24 23:39:56,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 569 flow [2024-10-24 23:39:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2024-10-24 23:39:56,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 23:39:56,218 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 279 flow. Second operand 5 states and 270 transitions. [2024-10-24 23:39:56,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 569 flow [2024-10-24 23:39:56,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 495 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-24 23:39:56,223 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 269 flow [2024-10-24 23:39:56,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-10-24 23:39:56,225 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-24 23:39:56,226 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 269 flow [2024-10-24 23:39:56,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:56,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:56,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:56,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:39:56,226 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:56,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash -862451771, now seen corresponding path program 1 times [2024-10-24 23:39:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:56,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910804756] [2024-10-24 23:39:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:56,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910804756] [2024-10-24 23:39:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910804756] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:39:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350242155] [2024-10-24 23:39:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:56,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:56,322 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) [2024-10-24 23:39:56,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:39:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:56,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:56,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:56,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:39:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350242155] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:39:56,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:39:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:39:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178492007] [2024-10-24 23:39:56,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:39:56,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:39:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:39:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:39:56,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:39:56,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 269 flow. Second operand has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:56,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:56,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:39:56,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:56,729 INFO L124 PetriNetUnfolderBase]: 244/713 cut-off events. [2024-10-24 23:39:56,729 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-10-24 23:39:56,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 713 events. 244/713 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4335 event pairs, 150 based on Foata normal form. 15/551 useless extension candidates. Maximal degree in co-relation 1024. Up to 406 conditions per place. [2024-10-24 23:39:56,733 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 39 selfloop transitions, 42 changer transitions 0/114 dead transitions. [2024-10-24 23:39:56,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 581 flow [2024-10-24 23:39:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:39:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:39:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 473 transitions. [2024-10-24 23:39:56,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5839506172839506 [2024-10-24 23:39:56,736 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 269 flow. Second operand 10 states and 473 transitions. [2024-10-24 23:39:56,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 581 flow [2024-10-24 23:39:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:39:56,739 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 552 flow [2024-10-24 23:39:56,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=552, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-10-24 23:39:56,740 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-10-24 23:39:56,740 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 552 flow [2024-10-24 23:39:56,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:56,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:56,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:56,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:39:56,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:56,945 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:56,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1544502544, now seen corresponding path program 1 times [2024-10-24 23:39:56,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:56,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832741117] [2024-10-24 23:39:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:56,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:57,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:57,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832741117] [2024-10-24 23:39:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832741117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:57,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308018711] [2024-10-24 23:39:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:57,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:57,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-10-24 23:39:57,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 552 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:57,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:57,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-10-24 23:39:57,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:57,206 INFO L124 PetriNetUnfolderBase]: 476/1165 cut-off events. [2024-10-24 23:39:57,206 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-10-24 23:39:57,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1165 events. 476/1165 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7243 event pairs, 234 based on Foata normal form. 32/908 useless extension candidates. Maximal degree in co-relation 2074. Up to 645 conditions per place. [2024-10-24 23:39:57,213 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 101 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-10-24 23:39:57,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 139 transitions, 814 flow [2024-10-24 23:39:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-10-24 23:39:57,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2024-10-24 23:39:57,215 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 552 flow. Second operand 4 states and 236 transitions. [2024-10-24 23:39:57,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 139 transitions, 814 flow [2024-10-24 23:39:57,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 778 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:39:57,219 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 545 flow [2024-10-24 23:39:57,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-10-24 23:39:57,220 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-10-24 23:39:57,220 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 545 flow [2024-10-24 23:39:57,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:57,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:57,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:57,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:39:57,221 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:57,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1745485225, now seen corresponding path program 1 times [2024-10-24 23:39:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:57,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807841294] [2024-10-24 23:39:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807841294] [2024-10-24 23:39:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807841294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:57,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:57,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924268448] [2024-10-24 23:39:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:57,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:57,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:57,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-10-24 23:39:57,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:57,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:57,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-10-24 23:39:57,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:57,516 INFO L124 PetriNetUnfolderBase]: 382/1090 cut-off events. [2024-10-24 23:39:57,516 INFO L125 PetriNetUnfolderBase]: For 472/480 co-relation queries the response was YES. [2024-10-24 23:39:57,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 1090 events. 382/1090 cut-off events. For 472/480 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7501 event pairs, 234 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 2196. Up to 639 conditions per place. [2024-10-24 23:39:57,523 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 83 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-10-24 23:39:57,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 853 flow [2024-10-24 23:39:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-24 23:39:57,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-10-24 23:39:57,525 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 545 flow. Second operand 4 states and 217 transitions. [2024-10-24 23:39:57,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 853 flow [2024-10-24 23:39:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 135 transitions, 850 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:57,530 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 650 flow [2024-10-24 23:39:57,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=650, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-10-24 23:39:57,531 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-10-24 23:39:57,531 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 650 flow [2024-10-24 23:39:57,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:57,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:57,531 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:57,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:39:57,532 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:57,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash 291477240, now seen corresponding path program 1 times [2024-10-24 23:39:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667823429] [2024-10-24 23:39:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:39:57,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:57,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667823429] [2024-10-24 23:39:57,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667823429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:57,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:57,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:39:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174067805] [2024-10-24 23:39:57,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:57,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:57,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-10-24 23:39:57,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 650 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:57,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:57,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-10-24 23:39:57,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:57,921 INFO L124 PetriNetUnfolderBase]: 538/1545 cut-off events. [2024-10-24 23:39:57,922 INFO L125 PetriNetUnfolderBase]: For 666/674 co-relation queries the response was YES. [2024-10-24 23:39:57,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1545 events. 538/1545 cut-off events. For 666/674 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10899 event pairs, 294 based on Foata normal form. 32/1289 useless extension candidates. Maximal degree in co-relation 3132. Up to 641 conditions per place. [2024-10-24 23:39:57,931 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 142 selfloop transitions, 20 changer transitions 0/198 dead transitions. [2024-10-24 23:39:57,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1405 flow [2024-10-24 23:39:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:39:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:39:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 355 transitions. [2024-10-24 23:39:57,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7304526748971193 [2024-10-24 23:39:57,932 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 650 flow. Second operand 6 states and 355 transitions. [2024-10-24 23:39:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1405 flow [2024-10-24 23:39:57,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:57,940 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 779 flow [2024-10-24 23:39:57,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=779, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-10-24 23:39:57,940 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2024-10-24 23:39:57,941 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 779 flow [2024-10-24 23:39:57,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:57,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:57,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:57,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:39:57,942 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:57,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -398301331, now seen corresponding path program 1 times [2024-10-24 23:39:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594964087] [2024-10-24 23:39:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:58,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:58,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594964087] [2024-10-24 23:39:58,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594964087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:58,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:58,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:39:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596641100] [2024-10-24 23:39:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:58,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:58,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:39:58,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 779 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:58,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:58,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:39:58,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:58,291 INFO L124 PetriNetUnfolderBase]: 440/1119 cut-off events. [2024-10-24 23:39:58,292 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2024-10-24 23:39:58,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1119 events. 440/1119 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6600 event pairs, 267 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 2769. Up to 624 conditions per place. [2024-10-24 23:39:58,299 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 138 selfloop transitions, 5 changer transitions 13/188 dead transitions. [2024-10-24 23:39:58,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1418 flow [2024-10-24 23:39:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2024-10-24 23:39:58,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2024-10-24 23:39:58,301 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 779 flow. Second operand 5 states and 262 transitions. [2024-10-24 23:39:58,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1418 flow [2024-10-24 23:39:58,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 188 transitions, 1414 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-24 23:39:58,311 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 773 flow [2024-10-24 23:39:58,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=773, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2024-10-24 23:39:58,311 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-10-24 23:39:58,312 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 773 flow [2024-10-24 23:39:58,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:58,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:58,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:58,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:39:58,312 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:58,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash -815446169, now seen corresponding path program 1 times [2024-10-24 23:39:58,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:58,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585824471] [2024-10-24 23:39:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:58,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:58,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585824471] [2024-10-24 23:39:58,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585824471] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:39:58,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107748271] [2024-10-24 23:39:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:58,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:58,417 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) [2024-10-24 23:39:58,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:39:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:58,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:58,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:58,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:39:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107748271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:58,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:39:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:39:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816867115] [2024-10-24 23:39:58,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:58,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:39:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:39:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:39:58,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-10-24 23:39:58,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:58,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:58,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-10-24 23:39:58,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:58,751 INFO L124 PetriNetUnfolderBase]: 380/1051 cut-off events. [2024-10-24 23:39:58,751 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-10-24 23:39:58,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1051 events. 380/1051 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6364 event pairs, 242 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 2659. Up to 655 conditions per place. [2024-10-24 23:39:58,758 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 84 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-10-24 23:39:58,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 145 transitions, 1092 flow [2024-10-24 23:39:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:39:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:39:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2024-10-24 23:39:58,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193415637860082 [2024-10-24 23:39:58,760 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 773 flow. Second operand 6 states and 301 transitions. [2024-10-24 23:39:58,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 145 transitions, 1092 flow [2024-10-24 23:39:58,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1065 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:39:58,767 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 800 flow [2024-10-24 23:39:58,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=800, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-10-24 23:39:58,768 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2024-10-24 23:39:58,768 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 800 flow [2024-10-24 23:39:58,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:58,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:58,768 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:58,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:39:58,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:58,969 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:58,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash 490973334, now seen corresponding path program 1 times [2024-10-24 23:39:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:58,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358132818] [2024-10-24 23:39:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:59,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358132818] [2024-10-24 23:39:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358132818] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:39:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518443643] [2024-10-24 23:39:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:59,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:59,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:59,072 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) [2024-10-24 23:39:59,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:39:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:59,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:59,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:59,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:39:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518443643] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:39:59,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:39:59,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:39:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564573243] [2024-10-24 23:39:59,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:39:59,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:39:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:39:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:39:59,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-10-24 23:39:59,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 800 flow. Second operand has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:59,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-10-24 23:39:59,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:59,523 INFO L124 PetriNetUnfolderBase]: 416/1175 cut-off events. [2024-10-24 23:39:59,524 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-10-24 23:39:59,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1175 events. 416/1175 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7065 event pairs, 242 based on Foata normal form. 6/1057 useless extension candidates. Maximal degree in co-relation 3014. Up to 699 conditions per place. [2024-10-24 23:39:59,532 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 131 selfloop transitions, 43 changer transitions 0/208 dead transitions. [2024-10-24 23:39:59,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 208 transitions, 1752 flow [2024-10-24 23:39:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:39:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:39:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 493 transitions. [2024-10-24 23:39:59,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.608641975308642 [2024-10-24 23:39:59,538 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 800 flow. Second operand 10 states and 493 transitions. [2024-10-24 23:39:59,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 208 transitions, 1752 flow [2024-10-24 23:39:59,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 208 transitions, 1637 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-10-24 23:39:59,551 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1030 flow [2024-10-24 23:39:59,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1030, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-10-24 23:39:59,552 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-10-24 23:39:59,552 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1030 flow [2024-10-24 23:39:59,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:59,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:59,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 23:39:59,753 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,SelfDestructingSolverStorable13 [2024-10-24 23:39:59,753 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:39:59,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2121039192, now seen corresponding path program 1 times [2024-10-24 23:39:59,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:59,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441981830] [2024-10-24 23:39:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441981830] [2024-10-24 23:39:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441981830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:39:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257069069] [2024-10-24 23:39:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:59,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:59,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-10-24 23:39:59,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:59,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:59,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-10-24 23:39:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:00,124 INFO L124 PetriNetUnfolderBase]: 414/1173 cut-off events. [2024-10-24 23:40:00,124 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-10-24 23:40:00,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 1173 events. 414/1173 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6955 event pairs, 242 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 3220. Up to 590 conditions per place. [2024-10-24 23:40:00,132 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 161 selfloop transitions, 10 changer transitions 6/210 dead transitions. [2024-10-24 23:40:00,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 210 transitions, 1730 flow [2024-10-24 23:40:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:40:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:40:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 269 transitions. [2024-10-24 23:40:00,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641975308641975 [2024-10-24 23:40:00,133 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1030 flow. Second operand 5 states and 269 transitions. [2024-10-24 23:40:00,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 210 transitions, 1730 flow [2024-10-24 23:40:00,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 210 transitions, 1700 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:00,147 INFO L231 Difference]: Finished difference. Result has 125 places, 155 transitions, 1013 flow [2024-10-24 23:40:00,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=125, PETRI_TRANSITIONS=155} [2024-10-24 23:40:00,149 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-10-24 23:40:00,149 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 155 transitions, 1013 flow [2024-10-24 23:40:00,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:00,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:00,149 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:00,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 23:40:00,149 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:00,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 127811983, now seen corresponding path program 2 times [2024-10-24 23:40:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60138992] [2024-10-24 23:40:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:00,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60138992] [2024-10-24 23:40:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60138992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166161194] [2024-10-24 23:40:00,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:40:00,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:00,339 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) [2024-10-24 23:40:00,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:40:00,422 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:40:00,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:40:00,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:40:00,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:06,059 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post26#1| 1) .cse0)))) is different from true [2024-10-24 23:40:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 8 not checked. [2024-10-24 23:40:06,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:40:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166161194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:07,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:07,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2024-10-24 23:40:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72626375] [2024-10-24 23:40:07,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:07,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:40:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:40:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=151, Unknown=8, NotChecked=26, Total=240 [2024-10-24 23:40:07,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-24 23:40:07,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 155 transitions, 1013 flow. Second operand has 16 states, 16 states have (on average 38.0) internal successors, (608), 16 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:07,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:07,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-24 23:40:07,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:14,812 INFO L124 PetriNetUnfolderBase]: 430/1353 cut-off events. [2024-10-24 23:40:14,812 INFO L125 PetriNetUnfolderBase]: For 1324/1324 co-relation queries the response was YES. [2024-10-24 23:40:14,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 1353 events. 430/1353 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8778 event pairs, 242 based on Foata normal form. 18/1203 useless extension candidates. Maximal degree in co-relation 3605. Up to 749 conditions per place. [2024-10-24 23:40:14,821 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 71 selfloop transitions, 83 changer transitions 0/183 dead transitions. [2024-10-24 23:40:14,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 183 transitions, 1459 flow [2024-10-24 23:40:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:40:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:40:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 968 transitions. [2024-10-24 23:40:14,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2024-10-24 23:40:14,824 INFO L175 Difference]: Start difference. First operand has 125 places, 155 transitions, 1013 flow. Second operand 24 states and 968 transitions. [2024-10-24 23:40:14,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 183 transitions, 1459 flow [2024-10-24 23:40:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 183 transitions, 1425 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-24 23:40:14,836 INFO L231 Difference]: Finished difference. Result has 145 places, 168 transitions, 1294 flow [2024-10-24 23:40:14,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1294, PETRI_PLACES=145, PETRI_TRANSITIONS=168} [2024-10-24 23:40:14,836 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2024-10-24 23:40:14,837 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 168 transitions, 1294 flow [2024-10-24 23:40:14,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 38.0) internal successors, (608), 16 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:14,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:14,837 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] [2024-10-24 23:40:14,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:40:15,038 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,SelfDestructingSolverStorable15 [2024-10-24 23:40:15,038 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:15,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1846403656, now seen corresponding path program 1 times [2024-10-24 23:40:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327107570] [2024-10-24 23:40:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:15,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327107570] [2024-10-24 23:40:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327107570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:15,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:15,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:40:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600294011] [2024-10-24 23:40:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:15,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:40:15,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:40:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:40:15,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-10-24 23:40:15,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 168 transitions, 1294 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:15,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:15,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-10-24 23:40:15,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:15,624 INFO L124 PetriNetUnfolderBase]: 649/1930 cut-off events. [2024-10-24 23:40:15,624 INFO L125 PetriNetUnfolderBase]: For 2931/2951 co-relation queries the response was YES. [2024-10-24 23:40:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 1930 events. 649/1930 cut-off events. For 2931/2951 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12774 event pairs, 338 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 5400. Up to 865 conditions per place. [2024-10-24 23:40:15,638 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 188 selfloop transitions, 28 changer transitions 1/251 dead transitions. [2024-10-24 23:40:15,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 251 transitions, 2427 flow [2024-10-24 23:40:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:40:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:40:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 340 transitions. [2024-10-24 23:40:15,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6995884773662552 [2024-10-24 23:40:15,641 INFO L175 Difference]: Start difference. First operand has 145 places, 168 transitions, 1294 flow. Second operand 6 states and 340 transitions. [2024-10-24 23:40:15,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 251 transitions, 2427 flow [2024-10-24 23:40:15,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 251 transitions, 2144 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-10-24 23:40:15,660 INFO L231 Difference]: Finished difference. Result has 141 places, 182 transitions, 1317 flow [2024-10-24 23:40:15,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1317, PETRI_PLACES=141, PETRI_TRANSITIONS=182} [2024-10-24 23:40:15,662 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-10-24 23:40:15,662 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 182 transitions, 1317 flow [2024-10-24 23:40:15,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:15,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:15,662 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] [2024-10-24 23:40:15,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 23:40:15,663 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:15,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1846403689, now seen corresponding path program 1 times [2024-10-24 23:40:15,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:15,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049860500] [2024-10-24 23:40:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:15,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:40:15,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049860500] [2024-10-24 23:40:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049860500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:15,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:15,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310271791] [2024-10-24 23:40:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:15,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:15,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-10-24 23:40:15,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 182 transitions, 1317 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:15,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:15,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-10-24 23:40:15,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:16,183 INFO L124 PetriNetUnfolderBase]: 1115/2784 cut-off events. [2024-10-24 23:40:16,183 INFO L125 PetriNetUnfolderBase]: For 3638/3702 co-relation queries the response was YES. [2024-10-24 23:40:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 2784 events. 1115/2784 cut-off events. For 3638/3702 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18514 event pairs, 488 based on Foata normal form. 80/2634 useless extension candidates. Maximal degree in co-relation 7532. Up to 1635 conditions per place. [2024-10-24 23:40:16,201 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 176 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2024-10-24 23:40:16,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 213 transitions, 1835 flow [2024-10-24 23:40:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-10-24 23:40:16,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2024-10-24 23:40:16,202 INFO L175 Difference]: Start difference. First operand has 141 places, 182 transitions, 1317 flow. Second operand 4 states and 226 transitions. [2024-10-24 23:40:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 213 transitions, 1835 flow [2024-10-24 23:40:16,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 1835 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:40:16,222 INFO L231 Difference]: Finished difference. Result has 146 places, 186 transitions, 1372 flow [2024-10-24 23:40:16,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1372, PETRI_PLACES=146, PETRI_TRANSITIONS=186} [2024-10-24 23:40:16,223 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 69 predicate places. [2024-10-24 23:40:16,223 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 186 transitions, 1372 flow [2024-10-24 23:40:16,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:16,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:16,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:16,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 23:40:16,224 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:16,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1644240363, now seen corresponding path program 1 times [2024-10-24 23:40:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142344940] [2024-10-24 23:40:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142344940] [2024-10-24 23:40:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142344940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086777630] [2024-10-24 23:40:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:16,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:16,326 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) [2024-10-24 23:40:16,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:40:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:16,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:40:16,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:40:16,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:40:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086777630] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:16,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:16,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-24 23:40:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880901704] [2024-10-24 23:40:16,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:16,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:40:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:40:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:40:16,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-10-24 23:40:16,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 186 transitions, 1372 flow. Second operand has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:16,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:16,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-10-24 23:40:16,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:17,853 INFO L124 PetriNetUnfolderBase]: 1526/3739 cut-off events. [2024-10-24 23:40:17,854 INFO L125 PetriNetUnfolderBase]: For 6044/6088 co-relation queries the response was YES. [2024-10-24 23:40:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12241 conditions, 3739 events. 1526/3739 cut-off events. For 6044/6088 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 26114 event pairs, 279 based on Foata normal form. 52/3614 useless extension candidates. Maximal degree in co-relation 11217. Up to 1111 conditions per place. [2024-10-24 23:40:17,875 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 319 selfloop transitions, 66 changer transitions 15/430 dead transitions. [2024-10-24 23:40:17,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 430 transitions, 3852 flow [2024-10-24 23:40:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 23:40:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 23:40:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 798 transitions. [2024-10-24 23:40:17,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.579520697167756 [2024-10-24 23:40:17,878 INFO L175 Difference]: Start difference. First operand has 146 places, 186 transitions, 1372 flow. Second operand 17 states and 798 transitions. [2024-10-24 23:40:17,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 430 transitions, 3852 flow [2024-10-24 23:40:17,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 430 transitions, 3807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:17,918 INFO L231 Difference]: Finished difference. Result has 162 places, 215 transitions, 1823 flow [2024-10-24 23:40:17,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1823, PETRI_PLACES=162, PETRI_TRANSITIONS=215} [2024-10-24 23:40:17,919 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2024-10-24 23:40:17,919 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 215 transitions, 1823 flow [2024-10-24 23:40:17,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:17,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:17,920 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:17,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 23:40:18,120 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 [2024-10-24 23:40:18,121 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:18,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -331478038, now seen corresponding path program 1 times [2024-10-24 23:40:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226382052] [2024-10-24 23:40:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:18,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 23:40:18,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:18,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226382052] [2024-10-24 23:40:18,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226382052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:18,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:18,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:40:18,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500837983] [2024-10-24 23:40:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:18,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:18,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:18,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-10-24 23:40:18,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 215 transitions, 1823 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:18,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:18,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-10-24 23:40:18,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:18,698 INFO L124 PetriNetUnfolderBase]: 1410/3728 cut-off events. [2024-10-24 23:40:18,698 INFO L125 PetriNetUnfolderBase]: For 8315/8320 co-relation queries the response was YES. [2024-10-24 23:40:18,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12890 conditions, 3728 events. 1410/3728 cut-off events. For 8315/8320 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 27640 event pairs, 857 based on Foata normal form. 2/3614 useless extension candidates. Maximal degree in co-relation 11777. Up to 2641 conditions per place. [2024-10-24 23:40:18,718 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 168 selfloop transitions, 13 changer transitions 0/214 dead transitions. [2024-10-24 23:40:18,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 214 transitions, 2173 flow [2024-10-24 23:40:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-10-24 23:40:18,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6882716049382716 [2024-10-24 23:40:18,720 INFO L175 Difference]: Start difference. First operand has 162 places, 215 transitions, 1823 flow. Second operand 4 states and 223 transitions. [2024-10-24 23:40:18,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 214 transitions, 2173 flow [2024-10-24 23:40:18,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 214 transitions, 2125 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-24 23:40:18,763 INFO L231 Difference]: Finished difference. Result has 162 places, 214 transitions, 1793 flow [2024-10-24 23:40:18,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1793, PETRI_PLACES=162, PETRI_TRANSITIONS=214} [2024-10-24 23:40:18,764 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2024-10-24 23:40:18,764 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 214 transitions, 1793 flow [2024-10-24 23:40:18,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:18,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:18,765 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:18,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 23:40:18,765 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:18,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 396599330, now seen corresponding path program 1 times [2024-10-24 23:40:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399659689] [2024-10-24 23:40:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:40:18,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:18,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399659689] [2024-10-24 23:40:18,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399659689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508322469] [2024-10-24 23:40:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:18,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:18,859 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) [2024-10-24 23:40:18,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:40:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:18,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:40:18,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:19,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:19,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508322469] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:19,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:19,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2024-10-24 23:40:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228757597] [2024-10-24 23:40:19,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:19,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:40:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:40:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-24 23:40:19,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-10-24 23:40:19,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 214 transitions, 1793 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 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) [2024-10-24 23:40:19,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:19,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-10-24 23:40:19,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:20,306 INFO L124 PetriNetUnfolderBase]: 2307/5546 cut-off events. [2024-10-24 23:40:20,306 INFO L125 PetriNetUnfolderBase]: For 7484/7532 co-relation queries the response was YES. [2024-10-24 23:40:20,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16813 conditions, 5546 events. 2307/5546 cut-off events. For 7484/7532 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 41561 event pairs, 346 based on Foata normal form. 124/5404 useless extension candidates. Maximal degree in co-relation 15701. Up to 850 conditions per place. [2024-10-24 23:40:20,335 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 352 selfloop transitions, 41 changer transitions 0/421 dead transitions. [2024-10-24 23:40:20,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 421 transitions, 3879 flow [2024-10-24 23:40:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:40:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:40:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 603 transitions. [2024-10-24 23:40:20,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2024-10-24 23:40:20,338 INFO L175 Difference]: Start difference. First operand has 162 places, 214 transitions, 1793 flow. Second operand 13 states and 603 transitions. [2024-10-24 23:40:20,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 421 transitions, 3879 flow [2024-10-24 23:40:20,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 421 transitions, 3855 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:20,383 INFO L231 Difference]: Finished difference. Result has 172 places, 219 transitions, 1893 flow [2024-10-24 23:40:20,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1893, PETRI_PLACES=172, PETRI_TRANSITIONS=219} [2024-10-24 23:40:20,384 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 95 predicate places. [2024-10-24 23:40:20,384 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 219 transitions, 1893 flow [2024-10-24 23:40:20,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 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) [2024-10-24 23:40:20,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:20,385 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, 1, 1, 1] [2024-10-24 23:40:20,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 23:40:20,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 23:40:20,585 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:20,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash 813241376, now seen corresponding path program 1 times [2024-10-24 23:40:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:20,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606126678] [2024-10-24 23:40:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:20,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:20,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606126678] [2024-10-24 23:40:20,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606126678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:20,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883755779] [2024-10-24 23:40:20,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:20,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:20,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:40:20,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 219 transitions, 1893 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:20,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:20,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:40:20,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:21,812 INFO L124 PetriNetUnfolderBase]: 3750/7983 cut-off events. [2024-10-24 23:40:21,812 INFO L125 PetriNetUnfolderBase]: For 12541/12627 co-relation queries the response was YES. [2024-10-24 23:40:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24402 conditions, 7983 events. 3750/7983 cut-off events. For 12541/12627 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 57300 event pairs, 1820 based on Foata normal form. 0/7495 useless extension candidates. Maximal degree in co-relation 23289. Up to 4812 conditions per place. [2024-10-24 23:40:21,868 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 226 selfloop transitions, 10 changer transitions 0/262 dead transitions. [2024-10-24 23:40:21,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 262 transitions, 2557 flow [2024-10-24 23:40:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-24 23:40:21,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-10-24 23:40:21,870 INFO L175 Difference]: Start difference. First operand has 172 places, 219 transitions, 1893 flow. Second operand 4 states and 219 transitions. [2024-10-24 23:40:21,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 262 transitions, 2557 flow [2024-10-24 23:40:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 262 transitions, 2501 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-24 23:40:21,929 INFO L231 Difference]: Finished difference. Result has 172 places, 224 transitions, 1912 flow [2024-10-24 23:40:21,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1912, PETRI_PLACES=172, PETRI_TRANSITIONS=224} [2024-10-24 23:40:21,930 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 95 predicate places. [2024-10-24 23:40:21,930 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 224 transitions, 1912 flow [2024-10-24 23:40:21,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:21,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:21,930 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, 1, 1, 1, 1] [2024-10-24 23:40:21,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 23:40:21,931 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:21,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash -559320266, now seen corresponding path program 1 times [2024-10-24 23:40:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:21,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245393429] [2024-10-24 23:40:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:21,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245393429] [2024-10-24 23:40:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245393429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:22,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839389547] [2024-10-24 23:40:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:22,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:22,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-10-24 23:40:22,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 224 transitions, 1912 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:22,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:22,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-10-24 23:40:22,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:23,068 INFO L124 PetriNetUnfolderBase]: 3345/7485 cut-off events. [2024-10-24 23:40:23,068 INFO L125 PetriNetUnfolderBase]: For 13028/13096 co-relation queries the response was YES. [2024-10-24 23:40:23,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23662 conditions, 7485 events. 3345/7485 cut-off events. For 13028/13096 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 55222 event pairs, 1703 based on Foata normal form. 0/7183 useless extension candidates. Maximal degree in co-relation 22546. Up to 4584 conditions per place. [2024-10-24 23:40:23,104 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 222 selfloop transitions, 11 changer transitions 0/261 dead transitions. [2024-10-24 23:40:23,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 261 transitions, 2536 flow [2024-10-24 23:40:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-10-24 23:40:23,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-10-24 23:40:23,106 INFO L175 Difference]: Start difference. First operand has 172 places, 224 transitions, 1912 flow. Second operand 4 states and 220 transitions. [2024-10-24 23:40:23,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 261 transitions, 2536 flow [2024-10-24 23:40:23,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 261 transitions, 2527 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:23,173 INFO L231 Difference]: Finished difference. Result has 176 places, 226 transitions, 1950 flow [2024-10-24 23:40:23,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1950, PETRI_PLACES=176, PETRI_TRANSITIONS=226} [2024-10-24 23:40:23,174 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 99 predicate places. [2024-10-24 23:40:23,174 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 226 transitions, 1950 flow [2024-10-24 23:40:23,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:23,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:23,174 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:23,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 23:40:23,175 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:23,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1144951136, now seen corresponding path program 1 times [2024-10-24 23:40:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133524628] [2024-10-24 23:40:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:23,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:40:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133524628] [2024-10-24 23:40:23,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133524628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:23,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968286961] [2024-10-24 23:40:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:23,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:23,417 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) [2024-10-24 23:40:23,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:40:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:23,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 23:40:23,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 23:40:23,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 23:40:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968286961] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:23,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-24 23:40:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043473723] [2024-10-24 23:40:23,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:23,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:40:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:40:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-24 23:40:23,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:40:23,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 226 transitions, 1950 flow. Second operand has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:23,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:23,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:40:23,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:25,007 INFO L124 PetriNetUnfolderBase]: 2571/6325 cut-off events. [2024-10-24 23:40:25,007 INFO L125 PetriNetUnfolderBase]: For 14695/14713 co-relation queries the response was YES. [2024-10-24 23:40:25,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21056 conditions, 6325 events. 2571/6325 cut-off events. For 14695/14713 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 48671 event pairs, 1713 based on Foata normal form. 2/6114 useless extension candidates. Maximal degree in co-relation 20286. Up to 4310 conditions per place. [2024-10-24 23:40:25,037 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 95 selfloop transitions, 91 changer transitions 0/219 dead transitions. [2024-10-24 23:40:25,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 219 transitions, 2257 flow [2024-10-24 23:40:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:40:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:40:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 605 transitions. [2024-10-24 23:40:25,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5335097001763669 [2024-10-24 23:40:25,039 INFO L175 Difference]: Start difference. First operand has 176 places, 226 transitions, 1950 flow. Second operand 14 states and 605 transitions. [2024-10-24 23:40:25,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 219 transitions, 2257 flow [2024-10-24 23:40:25,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 219 transitions, 2248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:25,077 INFO L231 Difference]: Finished difference. Result has 188 places, 219 transitions, 2058 flow [2024-10-24 23:40:25,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2058, PETRI_PLACES=188, PETRI_TRANSITIONS=219} [2024-10-24 23:40:25,078 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-10-24 23:40:25,078 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 219 transitions, 2058 flow [2024-10-24 23:40:25,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:25,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:25,079 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:25,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 23:40:25,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 23:40:25,279 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:25,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash 454948001, now seen corresponding path program 1 times [2024-10-24 23:40:25,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:25,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202417313] [2024-10-24 23:40:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:25,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202417313] [2024-10-24 23:40:25,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202417313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:25,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685286827] [2024-10-24 23:40:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:25,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:25,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:25,562 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:25,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 23:40:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:25,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:40:25,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:25,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685286827] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:25,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:25,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:40:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048422602] [2024-10-24 23:40:25,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:25,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:40:25,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:25,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:40:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:40:25,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:40:25,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 219 transitions, 2058 flow. Second operand has 28 states, 28 states have (on average 40.25) internal successors, (1127), 28 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:25,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:25,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:40:25,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:27,114 INFO L124 PetriNetUnfolderBase]: 2788/7193 cut-off events. [2024-10-24 23:40:27,114 INFO L125 PetriNetUnfolderBase]: For 23883/23901 co-relation queries the response was YES. [2024-10-24 23:40:27,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26113 conditions, 7193 events. 2788/7193 cut-off events. For 23883/23901 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 56993 event pairs, 1713 based on Foata normal form. 203/7183 useless extension candidates. Maximal degree in co-relation 24994. Up to 4462 conditions per place. [2024-10-24 23:40:27,153 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 79 selfloop transitions, 219 changer transitions 0/331 dead transitions. [2024-10-24 23:40:27,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 331 transitions, 4054 flow [2024-10-24 23:40:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:40:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:40:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1173 transitions. [2024-10-24 23:40:27,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5569800569800569 [2024-10-24 23:40:27,156 INFO L175 Difference]: Start difference. First operand has 188 places, 219 transitions, 2058 flow. Second operand 26 states and 1173 transitions. [2024-10-24 23:40:27,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 331 transitions, 4054 flow [2024-10-24 23:40:27,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 331 transitions, 3894 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-10-24 23:40:27,235 INFO L231 Difference]: Finished difference. Result has 210 places, 331 transitions, 3850 flow [2024-10-24 23:40:27,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3850, PETRI_PLACES=210, PETRI_TRANSITIONS=331} [2024-10-24 23:40:27,235 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-10-24 23:40:27,235 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 331 transitions, 3850 flow [2024-10-24 23:40:27,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 40.25) internal successors, (1127), 28 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:27,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:27,236 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, 1, 1, 1, 1, 1] [2024-10-24 23:40:27,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 23:40:27,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 23:40:27,437 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:27,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash -159058206, now seen corresponding path program 1 times [2024-10-24 23:40:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161107319] [2024-10-24 23:40:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:27,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:27,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161107319] [2024-10-24 23:40:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161107319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:27,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:27,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061690557] [2024-10-24 23:40:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:27,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:27,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:27,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-10-24 23:40:27,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 331 transitions, 3850 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:27,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:27,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-10-24 23:40:27,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:28,912 INFO L124 PetriNetUnfolderBase]: 3058/7568 cut-off events. [2024-10-24 23:40:28,913 INFO L125 PetriNetUnfolderBase]: For 22362/22408 co-relation queries the response was YES. [2024-10-24 23:40:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28582 conditions, 7568 events. 3058/7568 cut-off events. For 22362/22408 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 58936 event pairs, 1479 based on Foata normal form. 186/7735 useless extension candidates. Maximal degree in co-relation 27417. Up to 4749 conditions per place. [2024-10-24 23:40:28,951 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 322 selfloop transitions, 10 changer transitions 0/365 dead transitions. [2024-10-24 23:40:28,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 365 transitions, 4662 flow [2024-10-24 23:40:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:40:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:40:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-10-24 23:40:28,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006172839506173 [2024-10-24 23:40:28,953 INFO L175 Difference]: Start difference. First operand has 210 places, 331 transitions, 3850 flow. Second operand 4 states and 227 transitions. [2024-10-24 23:40:28,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 365 transitions, 4662 flow [2024-10-24 23:40:29,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 365 transitions, 3975 flow, removed 226 selfloop flow, removed 12 redundant places. [2024-10-24 23:40:29,042 INFO L231 Difference]: Finished difference. Result has 203 places, 332 transitions, 3202 flow [2024-10-24 23:40:29,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3202, PETRI_PLACES=203, PETRI_TRANSITIONS=332} [2024-10-24 23:40:29,043 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 126 predicate places. [2024-10-24 23:40:29,043 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 332 transitions, 3202 flow [2024-10-24 23:40:29,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:29,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:29,043 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:29,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 23:40:29,044 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:29,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 450201837, now seen corresponding path program 1 times [2024-10-24 23:40:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146086838] [2024-10-24 23:40:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:40:29,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146086838] [2024-10-24 23:40:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146086838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895214107] [2024-10-24 23:40:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:29,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:29,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:29,142 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:29,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 23:40:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:29,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:40:29,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:40:29,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:40:29,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895214107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:29,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:29,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:40:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71163701] [2024-10-24 23:40:29,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:29,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:40:29,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:40:29,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:40:29,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-10-24 23:40:29,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 332 transitions, 3202 flow. Second operand has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:29,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:29,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-10-24 23:40:29,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:30,902 INFO L124 PetriNetUnfolderBase]: 4228/9336 cut-off events. [2024-10-24 23:40:30,902 INFO L125 PetriNetUnfolderBase]: For 30017/30057 co-relation queries the response was YES. [2024-10-24 23:40:30,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33879 conditions, 9336 events. 4228/9336 cut-off events. For 30017/30057 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 70285 event pairs, 833 based on Foata normal form. 306/9605 useless extension candidates. Maximal degree in co-relation 32417. Up to 4259 conditions per place. [2024-10-24 23:40:30,960 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 527 selfloop transitions, 20 changer transitions 0/581 dead transitions. [2024-10-24 23:40:30,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 581 transitions, 6476 flow [2024-10-24 23:40:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:40:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:40:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 569 transitions. [2024-10-24 23:40:30,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7024691358024692 [2024-10-24 23:40:30,962 INFO L175 Difference]: Start difference. First operand has 203 places, 332 transitions, 3202 flow. Second operand 10 states and 569 transitions. [2024-10-24 23:40:30,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 581 transitions, 6476 flow [2024-10-24 23:40:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 581 transitions, 6374 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:40:31,074 INFO L231 Difference]: Finished difference. Result has 212 places, 341 transitions, 3282 flow [2024-10-24 23:40:31,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3282, PETRI_PLACES=212, PETRI_TRANSITIONS=341} [2024-10-24 23:40:31,075 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2024-10-24 23:40:31,075 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 341 transitions, 3282 flow [2024-10-24 23:40:31,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:31,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:31,076 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, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:31,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-24 23:40:31,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:31,276 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:31,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:31,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2050307041, now seen corresponding path program 1 times [2024-10-24 23:40:31,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:31,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657169514] [2024-10-24 23:40:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:31,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:31,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657169514] [2024-10-24 23:40:31,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657169514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:31,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:31,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:40:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048413921] [2024-10-24 23:40:31,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:31,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:40:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:31,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:40:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:40:31,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-10-24 23:40:31,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 341 transitions, 3282 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:31,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:31,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-10-24 23:40:31,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:33,055 INFO L124 PetriNetUnfolderBase]: 4170/9957 cut-off events. [2024-10-24 23:40:33,056 INFO L125 PetriNetUnfolderBase]: For 27347/27418 co-relation queries the response was YES. [2024-10-24 23:40:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37015 conditions, 9957 events. 4170/9957 cut-off events. For 27347/27418 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 80869 event pairs, 1515 based on Foata normal form. 180/10106 useless extension candidates. Maximal degree in co-relation 35550. Up to 4395 conditions per place. [2024-10-24 23:40:33,119 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 413 selfloop transitions, 7 changer transitions 11/461 dead transitions. [2024-10-24 23:40:33,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 461 transitions, 5193 flow [2024-10-24 23:40:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:40:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:40:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 268 transitions. [2024-10-24 23:40:33,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617283950617284 [2024-10-24 23:40:33,121 INFO L175 Difference]: Start difference. First operand has 212 places, 341 transitions, 3282 flow. Second operand 5 states and 268 transitions. [2024-10-24 23:40:33,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 461 transitions, 5193 flow [2024-10-24 23:40:33,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 461 transitions, 5146 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:33,255 INFO L231 Difference]: Finished difference. Result has 214 places, 339 transitions, 3264 flow [2024-10-24 23:40:33,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3264, PETRI_PLACES=214, PETRI_TRANSITIONS=339} [2024-10-24 23:40:33,256 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 137 predicate places. [2024-10-24 23:40:33,256 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 339 transitions, 3264 flow [2024-10-24 23:40:33,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:33,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:33,256 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:33,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-24 23:40:33,256 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:33,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1284501350, now seen corresponding path program 2 times [2024-10-24 23:40:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52006704] [2024-10-24 23:40:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:33,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52006704] [2024-10-24 23:40:33,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52006704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118123694] [2024-10-24 23:40:33,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:40:33,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:33,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:33,485 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:33,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 23:40:33,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:40:33,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:40:33,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:40:33,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 23:40:33,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 23:40:33,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118123694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:33,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:33,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-24 23:40:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033730089] [2024-10-24 23:40:33,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:33,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:40:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:40:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:40:33,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-10-24 23:40:33,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 339 transitions, 3264 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:33,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:33,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-10-24 23:40:33,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:35,395 INFO L124 PetriNetUnfolderBase]: 3984/9571 cut-off events. [2024-10-24 23:40:35,395 INFO L125 PetriNetUnfolderBase]: For 29593/29601 co-relation queries the response was YES. [2024-10-24 23:40:35,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36384 conditions, 9571 events. 3984/9571 cut-off events. For 29593/29601 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 76466 event pairs, 2541 based on Foata normal form. 12/9486 useless extension candidates. Maximal degree in co-relation 34730. Up to 5803 conditions per place. [2024-10-24 23:40:35,460 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 483 selfloop transitions, 138 changer transitions 0/655 dead transitions. [2024-10-24 23:40:35,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 655 transitions, 8122 flow [2024-10-24 23:40:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:40:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:40:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 684 transitions. [2024-10-24 23:40:35,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-10-24 23:40:35,462 INFO L175 Difference]: Start difference. First operand has 214 places, 339 transitions, 3264 flow. Second operand 15 states and 684 transitions. [2024-10-24 23:40:35,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 655 transitions, 8122 flow [2024-10-24 23:40:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 655 transitions, 8036 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-10-24 23:40:35,595 INFO L231 Difference]: Finished difference. Result has 220 places, 361 transitions, 3741 flow [2024-10-24 23:40:35,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3741, PETRI_PLACES=220, PETRI_TRANSITIONS=361} [2024-10-24 23:40:35,596 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 143 predicate places. [2024-10-24 23:40:35,596 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 361 transitions, 3741 flow [2024-10-24 23:40:35,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:35,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:35,597 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:35,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-24 23:40:35,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-24 23:40:35,798 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:35,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:35,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1487302528, now seen corresponding path program 1 times [2024-10-24 23:40:35,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783512587] [2024-10-24 23:40:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:35,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 23:40:35,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:35,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783512587] [2024-10-24 23:40:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783512587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:35,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10413944] [2024-10-24 23:40:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:35,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:35,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:35,914 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:35,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 23:40:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:36,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:40:36,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 23:40:36,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 23:40:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10413944] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:36,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:36,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:40:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360397258] [2024-10-24 23:40:36,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:36,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:40:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:40:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:40:36,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-10-24 23:40:36,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 361 transitions, 3741 flow. Second operand has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:36,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:36,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-10-24 23:40:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:38,802 INFO L124 PetriNetUnfolderBase]: 8019/17857 cut-off events. [2024-10-24 23:40:38,802 INFO L125 PetriNetUnfolderBase]: For 42191/42339 co-relation queries the response was YES. [2024-10-24 23:40:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64277 conditions, 17857 events. 8019/17857 cut-off events. For 42191/42339 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 150379 event pairs, 1476 based on Foata normal form. 258/18096 useless extension candidates. Maximal degree in co-relation 62651. Up to 5182 conditions per place. [2024-10-24 23:40:38,916 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 555 selfloop transitions, 28 changer transitions 0/613 dead transitions. [2024-10-24 23:40:38,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 613 transitions, 6464 flow [2024-10-24 23:40:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:40:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:40:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2024-10-24 23:40:38,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6580246913580247 [2024-10-24 23:40:38,917 INFO L175 Difference]: Start difference. First operand has 220 places, 361 transitions, 3741 flow. Second operand 10 states and 533 transitions. [2024-10-24 23:40:38,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 613 transitions, 6464 flow [2024-10-24 23:40:39,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 613 transitions, 6100 flow, removed 42 selfloop flow, removed 11 redundant places. [2024-10-24 23:40:39,130 INFO L231 Difference]: Finished difference. Result has 221 places, 376 transitions, 3623 flow [2024-10-24 23:40:39,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3623, PETRI_PLACES=221, PETRI_TRANSITIONS=376} [2024-10-24 23:40:39,131 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 144 predicate places. [2024-10-24 23:40:39,131 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 376 transitions, 3623 flow [2024-10-24 23:40:39,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:39,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:39,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:39,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-24 23:40:39,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:39,332 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:39,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1330563944, now seen corresponding path program 1 times [2024-10-24 23:40:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479878062] [2024-10-24 23:40:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:39,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479878062] [2024-10-24 23:40:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479878062] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:39,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802502191] [2024-10-24 23:40:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:39,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:39,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:39,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:39,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 23:40:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:39,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:40:39,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:39,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802502191] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 23:40:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-10-24 23:40:39,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461457502] [2024-10-24 23:40:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:39,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:40:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:40:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:40:39,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-10-24 23:40:39,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 376 transitions, 3623 flow. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:39,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:39,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-10-24 23:40:39,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:42,563 INFO L124 PetriNetUnfolderBase]: 6756/16990 cut-off events. [2024-10-24 23:40:42,563 INFO L125 PetriNetUnfolderBase]: For 51333/51399 co-relation queries the response was YES. [2024-10-24 23:40:42,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60892 conditions, 16990 events. 6756/16990 cut-off events. For 51333/51399 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 143837 event pairs, 2820 based on Foata normal form. 301/17267 useless extension candidates. Maximal degree in co-relation 59202. Up to 4772 conditions per place. [2024-10-24 23:40:42,690 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 405 selfloop transitions, 26 changer transitions 1/466 dead transitions. [2024-10-24 23:40:42,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 466 transitions, 5111 flow [2024-10-24 23:40:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:40:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:40:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2024-10-24 23:40:42,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-10-24 23:40:42,692 INFO L175 Difference]: Start difference. First operand has 221 places, 376 transitions, 3623 flow. Second operand 5 states and 288 transitions. [2024-10-24 23:40:42,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 466 transitions, 5111 flow [2024-10-24 23:40:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 466 transitions, 5081 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:42,852 INFO L231 Difference]: Finished difference. Result has 227 places, 387 transitions, 3880 flow [2024-10-24 23:40:42,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3504, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3880, PETRI_PLACES=227, PETRI_TRANSITIONS=387} [2024-10-24 23:40:42,853 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 150 predicate places. [2024-10-24 23:40:42,853 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 387 transitions, 3880 flow [2024-10-24 23:40:42,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:42,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:42,853 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2024-10-24 23:40:42,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-24 23:40:43,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:43,054 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:43,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -158211297, now seen corresponding path program 1 times [2024-10-24 23:40:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:43,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536743599] [2024-10-24 23:40:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:43,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536743599] [2024-10-24 23:40:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536743599] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128510620] [2024-10-24 23:40:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:43,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:43,347 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:43,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 23:40:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:43,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:40:43,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:43,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128510620] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:43,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-24 23:40:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524955532] [2024-10-24 23:40:43,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:43,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:40:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:40:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:40:44,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-10-24 23:40:44,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 387 transitions, 3880 flow. Second operand has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:44,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:44,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-10-24 23:40:44,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:51,267 INFO L124 PetriNetUnfolderBase]: 19738/36762 cut-off events. [2024-10-24 23:40:51,267 INFO L125 PetriNetUnfolderBase]: For 105793/106177 co-relation queries the response was YES. [2024-10-24 23:40:51,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136535 conditions, 36762 events. 19738/36762 cut-off events. For 105793/106177 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 274556 event pairs, 6285 based on Foata normal form. 516/37236 useless extension candidates. Maximal degree in co-relation 134869. Up to 9791 conditions per place. [2024-10-24 23:40:51,666 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 611 selfloop transitions, 221 changer transitions 0/854 dead transitions. [2024-10-24 23:40:51,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 854 transitions, 8892 flow [2024-10-24 23:40:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 23:40:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 23:40:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 788 transitions. [2024-10-24 23:40:51,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2024-10-24 23:40:51,668 INFO L175 Difference]: Start difference. First operand has 227 places, 387 transitions, 3880 flow. Second operand 20 states and 788 transitions. [2024-10-24 23:40:51,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 854 transitions, 8892 flow [2024-10-24 23:40:52,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 854 transitions, 8883 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:52,335 INFO L231 Difference]: Finished difference. Result has 251 places, 479 transitions, 5717 flow [2024-10-24 23:40:52,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3875, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5717, PETRI_PLACES=251, PETRI_TRANSITIONS=479} [2024-10-24 23:40:52,336 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 174 predicate places. [2024-10-24 23:40:52,336 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 479 transitions, 5717 flow [2024-10-24 23:40:52,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:52,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:52,336 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-10-24 23:40:52,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-24 23:40:52,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:52,537 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-24 23:40:52,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:52,537 INFO L85 PathProgramCache]: Analyzing trace with hash 503291331, now seen corresponding path program 1 times [2024-10-24 23:40:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171093144] [2024-10-24 23:40:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 23:40:52,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286405183] [2024-10-24 23:40:52,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:52,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:52,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:52,570 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:52,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 23:40:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:52,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:40:52,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 23:40:52,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 23:41:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171093144] [2024-10-24 23:41:03,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 23:41:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286405183] [2024-10-24 23:41:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286405183] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:03,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 23:41:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-24 23:41:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279996641] [2024-10-24 23:41:03,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:03,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:41:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:41:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=44, Unknown=3, NotChecked=0, Total=72 [2024-10-24 23:41:07,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-10-24 23:41:11,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-10-24 23:41:15,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]