./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/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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/popl20-prod-cons-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 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:04:20,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:04:20,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:04:20,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:04:20,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:04:20,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:04:20,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:04:20,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:04:20,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:04:20,202 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:04:20,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:04:20,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:04:20,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:04:20,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:04:20,204 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:04:20,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:04:20,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:04:20,205 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:04:20,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:04:20,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:04:20,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:04:20,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:04:20,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:04:20,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:04:20,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:04:20,210 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:04:20,210 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:04:20,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:04:20,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:04:20,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:04:20,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:04:20,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:04:20,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:04:20,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:04:20,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:04:20,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:04:20,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:04:20,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:04:20,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:04:20,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:04:20,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:04:20,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:04:20,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:04:20,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:04:20,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-20 22:04:20,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:04:20,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:04:20,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:04:20,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:04:20,513 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:04:20,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-20 22:04:21,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:04:22,227 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:04:22,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-20 22:04:22,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f91176d/cde443d2ca094ef8a3e04cbc5d830859/FLAGd4ce93258 [2024-11-20 22:04:22,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f91176d/cde443d2ca094ef8a3e04cbc5d830859 [2024-11-20 22:04:22,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:04:22,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:04:22,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:04:22,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:04:22,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:04:22,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b2596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22, skipping insertion in model container [2024-11-20 22:04:22,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,299 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:04:22,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:04:22,551 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:04:22,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:04:22,609 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:04:22,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22 WrapperNode [2024-11-20 22:04:22,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:04:22,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:04:22,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:04:22,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:04:22,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,660 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 435 [2024-11-20 22:04:22,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:04:22,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:04:22,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:04:22,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:04:22,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,709 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 3, 3, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 4]. [2024-11-20 22:04:22,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:04:22,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:04:22,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:04:22,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:04:22,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (1/1) ... [2024-11-20 22:04:22,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:04:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:22,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 22:04:22,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 22:04:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:04:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 22:04:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 22:04:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 22:04:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 22:04:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 22:04:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 22:04:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 22:04:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 22:04:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 22:04:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 22:04:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 22:04:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 22:04:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 22:04:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 22:04:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 22:04:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 22:04:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:04:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:04:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:04:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:04:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 22:04:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 22:04:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:04:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 22:04:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 22:04:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 22:04:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 22:04:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 22:04:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 22:04:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:04:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:04:22,879 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:04:23,035 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:04:23,037 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:04:23,728 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:04:23,728 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:04:24,325 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:04:24,326 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-20 22:04:24,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:04:24 BoogieIcfgContainer [2024-11-20 22:04:24,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:04:24,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:04:24,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:04:24,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:04:24,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:04:22" (1/3) ... [2024-11-20 22:04:24,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a44efa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:04:24, skipping insertion in model container [2024-11-20 22:04:24,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:22" (2/3) ... [2024-11-20 22:04:24,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a44efa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:04:24, skipping insertion in model container [2024-11-20 22:04:24,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:04:24" (3/3) ... [2024-11-20 22:04:24,336 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-20 22:04:24,355 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:04:24,355 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-20 22:04:24,355 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:04:24,464 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 22:04:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 175 flow [2024-11-20 22:04:24,535 INFO L124 PetriNetUnfolderBase]: 9/74 cut-off events. [2024-11-20 22:04:24,536 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 22:04:24,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 9/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 219 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-20 22:04:24,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 175 flow [2024-11-20 22:04:24,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 159 flow [2024-11-20 22:04:24,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:04:24,564 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;@74c1f32b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:04:24,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-20 22:04:24,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:04:24,569 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 22:04:24,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:04:24,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:24,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 22:04:24,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:24,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:24,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1383832, now seen corresponding path program 1 times [2024-11-20 22:04:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:24,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888907092] [2024-11-20 22:04:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:24,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888907092] [2024-11-20 22:04:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888907092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:24,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:24,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:04:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770481220] [2024-11-20 22:04:24,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:24,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:24,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:04:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:04:25,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:25,471 INFO L124 PetriNetUnfolderBase]: 993/1459 cut-off events. [2024-11-20 22:04:25,471 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-20 22:04:25,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1459 events. 993/1459 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7721 event pairs, 581 based on Foata normal form. 4/765 useless extension candidates. Maximal degree in co-relation 2759. Up to 1343 conditions per place. [2024-11-20 22:04:25,488 INFO L140 encePairwiseOnDemand]: 55/77 looper letters, 32 selfloop transitions, 12 changer transitions 1/62 dead transitions. [2024-11-20 22:04:25,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 229 flow [2024-11-20 22:04:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-20 22:04:25,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-11-20 22:04:25,503 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 159 flow. Second operand 4 states and 135 transitions. [2024-11-20 22:04:25,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 229 flow [2024-11-20 22:04:25,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-20 22:04:25,514 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 151 flow [2024-11-20 22:04:25,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-11-20 22:04:25,520 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-20 22:04:25,520 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 151 flow [2024-11-20 22:04:25,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:25,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 22:04:25,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:04:25,522 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:25,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 42900194, now seen corresponding path program 1 times [2024-11-20 22:04:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965521749] [2024-11-20 22:04:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:25,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965521749] [2024-11-20 22:04:25,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965521749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:25,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:25,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:04:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924953285] [2024-11-20 22:04:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:25,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:25,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:04:25,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:25,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:04:25,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:26,046 INFO L124 PetriNetUnfolderBase]: 993/1468 cut-off events. [2024-11-20 22:04:26,046 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-20 22:04:26,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1468 events. 993/1468 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7816 event pairs, 579 based on Foata normal form. 4/781 useless extension candidates. Maximal degree in co-relation 2858. Up to 1354 conditions per place. [2024-11-20 22:04:26,055 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 42 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-11-20 22:04:26,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 307 flow [2024-11-20 22:04:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-11-20 22:04:26,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-20 22:04:26,057 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 151 flow. Second operand 4 states and 140 transitions. [2024-11-20 22:04:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 307 flow [2024-11-20 22:04:26,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 263 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:04:26,062 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 239 flow [2024-11-20 22:04:26,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2024-11-20 22:04:26,063 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-11-20 22:04:26,064 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 239 flow [2024-11-20 22:04:26,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:26,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:26,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:04:26,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:04:26,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:26,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1720422664, now seen corresponding path program 1 times [2024-11-20 22:04:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:26,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011675073] [2024-11-20 22:04:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011675073] [2024-11-20 22:04:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011675073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:26,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879153697] [2024-11-20 22:04:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:26,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:26,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:26,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:26,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:26,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:26,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:26,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:26,538 INFO L124 PetriNetUnfolderBase]: 994/1472 cut-off events. [2024-11-20 22:04:26,538 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-20 22:04:26,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1472 events. 994/1472 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7778 event pairs, 579 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 2894. Up to 1362 conditions per place. [2024-11-20 22:04:26,546 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 52 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-20 22:04:26,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 359 flow [2024-11-20 22:04:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-20 22:04:26,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2024-11-20 22:04:26,549 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 239 flow. Second operand 4 states and 151 transitions. [2024-11-20 22:04:26,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 359 flow [2024-11-20 22:04:26,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 22:04:26,552 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 271 flow [2024-11-20 22:04:26,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2024-11-20 22:04:26,552 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-11-20 22:04:26,553 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 271 flow [2024-11-20 22:04:26,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:26,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:26,553 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 22:04:26,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 22:04:26,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:26,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1859173423, now seen corresponding path program 1 times [2024-11-20 22:04:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54258157] [2024-11-20 22:04:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:26,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54258157] [2024-11-20 22:04:26,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54258157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:26,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595104224] [2024-11-20 22:04:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:26,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:26,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:26,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:04:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:26,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:26,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595104224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:26,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-20 22:04:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687297018] [2024-11-20 22:04:26,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:26,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 22:04:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 22:04:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-20 22:04:26,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:04:26,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:26,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:26,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:04:26,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:27,313 INFO L124 PetriNetUnfolderBase]: 1006/1520 cut-off events. [2024-11-20 22:04:27,314 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-20 22:04:27,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1520 events. 1006/1520 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8178 event pairs, 579 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 3101. Up to 1363 conditions per place. [2024-11-20 22:04:27,325 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 45 selfloop transitions, 50 changer transitions 0/112 dead transitions. [2024-11-20 22:04:27,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 626 flow [2024-11-20 22:04:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:04:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:04:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2024-11-20 22:04:27,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3948051948051948 [2024-11-20 22:04:27,328 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 271 flow. Second operand 10 states and 304 transitions. [2024-11-20 22:04:27,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 626 flow [2024-11-20 22:04:27,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:27,334 INFO L231 Difference]: Finished difference. Result has 79 places, 112 transitions, 597 flow [2024-11-20 22:04:27,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=112} [2024-11-20 22:04:27,337 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-20 22:04:27,337 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 112 transitions, 597 flow [2024-11-20 22:04:27,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:27,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:27,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:27,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 22:04:27,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:27,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:27,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash 236349530, now seen corresponding path program 1 times [2024-11-20 22:04:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180368833] [2024-11-20 22:04:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:27,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:27,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:27,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180368833] [2024-11-20 22:04:27,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180368833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:27,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:27,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:27,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191680573] [2024-11-20 22:04:27,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:27,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:27,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:27,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:27,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:27,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:27,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 112 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:27,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:27,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:27,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:27,975 INFO L124 PetriNetUnfolderBase]: 1012/1545 cut-off events. [2024-11-20 22:04:27,977 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-20 22:04:27,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1545 events. 1012/1545 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 8439 event pairs, 579 based on Foata normal form. 1/858 useless extension candidates. Maximal degree in co-relation 3268. Up to 1401 conditions per place. [2024-11-20 22:04:27,987 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 102 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2024-11-20 22:04:27,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 933 flow [2024-11-20 22:04:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-20 22:04:27,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 22:04:27,989 INFO L175 Difference]: Start difference. First operand has 79 places, 112 transitions, 597 flow. Second operand 4 states and 154 transitions. [2024-11-20 22:04:27,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 933 flow [2024-11-20 22:04:27,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 772 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-11-20 22:04:27,999 INFO L231 Difference]: Finished difference. Result has 80 places, 119 transitions, 544 flow [2024-11-20 22:04:27,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=119} [2024-11-20 22:04:28,001 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-20 22:04:28,001 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 119 transitions, 544 flow [2024-11-20 22:04:28,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:28,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:28,002 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:28,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 22:04:28,002 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:28,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1265430579, now seen corresponding path program 1 times [2024-11-20 22:04:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244480258] [2024-11-20 22:04:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244480258] [2024-11-20 22:04:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244480258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:28,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:28,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:04:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327639843] [2024-11-20 22:04:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:28,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:04:28,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:04:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:04:28,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:28,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 119 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:28,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:28,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:28,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:28,676 INFO L124 PetriNetUnfolderBase]: 1409/2292 cut-off events. [2024-11-20 22:04:28,677 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-20 22:04:28,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 2292 events. 1409/2292 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 14737 event pairs, 953 based on Foata normal form. 33/1414 useless extension candidates. Maximal degree in co-relation 4802. Up to 1410 conditions per place. [2024-11-20 22:04:28,689 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 144 selfloop transitions, 13 changer transitions 0/178 dead transitions. [2024-11-20 22:04:28,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 178 transitions, 1134 flow [2024-11-20 22:04:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:04:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:04:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-11-20 22:04:28,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5558441558441558 [2024-11-20 22:04:28,691 INFO L175 Difference]: Start difference. First operand has 80 places, 119 transitions, 544 flow. Second operand 5 states and 214 transitions. [2024-11-20 22:04:28,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 178 transitions, 1134 flow [2024-11-20 22:04:28,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 178 transitions, 1127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:28,696 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 634 flow [2024-11-20 22:04:28,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2024-11-20 22:04:28,697 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2024-11-20 22:04:28,697 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 634 flow [2024-11-20 22:04:28,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:28,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:28,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:28,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 22:04:28,698 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:28,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -501156150, now seen corresponding path program 1 times [2024-11-20 22:04:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:28,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316270160] [2024-11-20 22:04:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:28,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316270160] [2024-11-20 22:04:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316270160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:28,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514777280] [2024-11-20 22:04:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:28,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:28,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:28,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:28,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:28,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:28,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:29,137 INFO L124 PetriNetUnfolderBase]: 1349/2084 cut-off events. [2024-11-20 22:04:29,137 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-11-20 22:04:29,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 2084 events. 1349/2084 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11190 event pairs, 327 based on Foata normal form. 26/1572 useless extension candidates. Maximal degree in co-relation 4653. Up to 1554 conditions per place. [2024-11-20 22:04:29,149 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 112 selfloop transitions, 2 changer transitions 2/137 dead transitions. [2024-11-20 22:04:29,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 896 flow [2024-11-20 22:04:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-20 22:04:29,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6147186147186147 [2024-11-20 22:04:29,152 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 634 flow. Second operand 3 states and 142 transitions. [2024-11-20 22:04:29,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 896 flow [2024-11-20 22:04:29,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 137 transitions, 888 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:29,157 INFO L231 Difference]: Finished difference. Result has 87 places, 126 transitions, 648 flow [2024-11-20 22:04:29,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=87, PETRI_TRANSITIONS=126} [2024-11-20 22:04:29,158 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-20 22:04:29,158 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 126 transitions, 648 flow [2024-11-20 22:04:29,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:29,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:29,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:29,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 22:04:29,159 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:29,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash -501156149, now seen corresponding path program 1 times [2024-11-20 22:04:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472614661] [2024-11-20 22:04:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472614661] [2024-11-20 22:04:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472614661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:29,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:29,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739553819] [2024-11-20 22:04:29,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:29,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:29,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:29,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 126 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:29,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:29,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:29,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:29,584 INFO L124 PetriNetUnfolderBase]: 1300/1995 cut-off events. [2024-11-20 22:04:29,584 INFO L125 PetriNetUnfolderBase]: For 480/488 co-relation queries the response was YES. [2024-11-20 22:04:29,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1995 events. 1300/1995 cut-off events. For 480/488 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10408 event pairs, 284 based on Foata normal form. 30/1568 useless extension candidates. Maximal degree in co-relation 5134. Up to 1554 conditions per place. [2024-11-20 22:04:29,598 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 111 selfloop transitions, 2 changer transitions 2/136 dead transitions. [2024-11-20 22:04:29,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 904 flow [2024-11-20 22:04:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-20 22:04:29,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887445887445888 [2024-11-20 22:04:29,599 INFO L175 Difference]: Start difference. First operand has 87 places, 126 transitions, 648 flow. Second operand 3 states and 136 transitions. [2024-11-20 22:04:29,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 904 flow [2024-11-20 22:04:29,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:29,604 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 654 flow [2024-11-20 22:04:29,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=654, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-11-20 22:04:29,605 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-20 22:04:29,605 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 654 flow [2024-11-20 22:04:29,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:29,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:29,605 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:29,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 22:04:29,606 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:29,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash 628565579, now seen corresponding path program 1 times [2024-11-20 22:04:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:29,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381505687] [2024-11-20 22:04:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:29,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:29,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381505687] [2024-11-20 22:04:29,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381505687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:29,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402825801] [2024-11-20 22:04:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:29,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:29,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:29,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:29,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:04:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:29,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:29,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:29,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402825801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:04:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580262813] [2024-11-20 22:04:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:29,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:04:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:04:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:04:29,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:29,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:29,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:29,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:29,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:30,274 INFO L124 PetriNetUnfolderBase]: 991/1665 cut-off events. [2024-11-20 22:04:30,274 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-11-20 22:04:30,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 1665 events. 991/1665 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10051 event pairs, 721 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 4330. Up to 1519 conditions per place. [2024-11-20 22:04:30,288 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 89 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-11-20 22:04:30,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 862 flow [2024-11-20 22:04:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:04:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:04:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-20 22:04:30,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-11-20 22:04:30,290 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 654 flow. Second operand 6 states and 201 transitions. [2024-11-20 22:04:30,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 862 flow [2024-11-20 22:04:30,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:30,295 INFO L231 Difference]: Finished difference. Result has 91 places, 125 transitions, 680 flow [2024-11-20 22:04:30,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=91, PETRI_TRANSITIONS=125} [2024-11-20 22:04:30,297 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 18 predicate places. [2024-11-20 22:04:30,297 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 125 transitions, 680 flow [2024-11-20 22:04:30,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:30,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:30,298 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:30,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:04:30,498 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,SelfDestructingSolverStorable8 [2024-11-20 22:04:30,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:30,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -736677857, now seen corresponding path program 1 times [2024-11-20 22:04:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014533655] [2024-11-20 22:04:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014533655] [2024-11-20 22:04:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014533655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338315437] [2024-11-20 22:04:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:30,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:30,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:04:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:30,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:30,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:30,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338315437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:30,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:04:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613151960] [2024-11-20 22:04:30,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:30,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:04:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:04:30,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:04:30,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:30,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 125 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:30,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:30,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:30,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:31,147 INFO L124 PetriNetUnfolderBase]: 991/1663 cut-off events. [2024-11-20 22:04:31,148 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2024-11-20 22:04:31,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 1663 events. 991/1663 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10107 event pairs, 721 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 4309. Up to 1462 conditions per place. [2024-11-20 22:04:31,164 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 100 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2024-11-20 22:04:31,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 966 flow [2024-11-20 22:04:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:04:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:04:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-11-20 22:04:31,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-11-20 22:04:31,166 INFO L175 Difference]: Start difference. First operand has 91 places, 125 transitions, 680 flow. Second operand 6 states and 204 transitions. [2024-11-20 22:04:31,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 966 flow [2024-11-20 22:04:31,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 904 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-20 22:04:31,171 INFO L231 Difference]: Finished difference. Result has 90 places, 124 transitions, 648 flow [2024-11-20 22:04:31,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=90, PETRI_TRANSITIONS=124} [2024-11-20 22:04:31,173 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2024-11-20 22:04:31,173 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 124 transitions, 648 flow [2024-11-20 22:04:31,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:31,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:31,173 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:31,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:04:31,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:31,374 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:31,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1989302111, now seen corresponding path program 1 times [2024-11-20 22:04:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361069594] [2024-11-20 22:04:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361069594] [2024-11-20 22:04:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361069594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601227955] [2024-11-20 22:04:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:31,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:31,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:04:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:31,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:31,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:31,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601227955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:31,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:31,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:04:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302134223] [2024-11-20 22:04:31,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:31,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:04:31,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:04:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:04:31,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:31,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 124 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:31,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:31,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:31,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:32,109 INFO L124 PetriNetUnfolderBase]: 994/1675 cut-off events. [2024-11-20 22:04:32,109 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-20 22:04:32,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1675 events. 994/1675 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10107 event pairs, 721 based on Foata normal form. 3/1351 useless extension candidates. Maximal degree in co-relation 4313. Up to 1526 conditions per place. [2024-11-20 22:04:32,119 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 92 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2024-11-20 22:04:32,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 133 transitions, 920 flow [2024-11-20 22:04:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:04:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:04:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-11-20 22:04:32,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103896103896104 [2024-11-20 22:04:32,122 INFO L175 Difference]: Start difference. First operand has 90 places, 124 transitions, 648 flow. Second operand 10 states and 316 transitions. [2024-11-20 22:04:32,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 133 transitions, 920 flow [2024-11-20 22:04:32,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 870 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-20 22:04:32,127 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 704 flow [2024-11-20 22:04:32,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=704, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2024-11-20 22:04:32,128 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2024-11-20 22:04:32,128 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 704 flow [2024-11-20 22:04:32,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:32,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:32,129 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:32,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 22:04:32,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:32,333 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:32,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:32,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1362175725, now seen corresponding path program 1 times [2024-11-20 22:04:32,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:32,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449194530] [2024-11-20 22:04:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:32,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449194530] [2024-11-20 22:04:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449194530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730406788] [2024-11-20 22:04:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:32,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:32,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:32,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:04:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:32,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:32,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:32,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:32,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730406788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:32,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:32,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:04:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107165125] [2024-11-20 22:04:32,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:32,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:04:32,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:04:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:04:32,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:32,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 704 flow. Second operand has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:32,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:32,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:32,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:33,024 INFO L124 PetriNetUnfolderBase]: 1030/1825 cut-off events. [2024-11-20 22:04:33,025 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-11-20 22:04:33,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 1825 events. 1030/1825 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11292 event pairs, 721 based on Foata normal form. 6/1503 useless extension candidates. Maximal degree in co-relation 4785. Up to 1512 conditions per place. [2024-11-20 22:04:33,039 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 146 selfloop transitions, 34 changer transitions 0/198 dead transitions. [2024-11-20 22:04:33,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 198 transitions, 1408 flow [2024-11-20 22:04:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:04:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:04:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-11-20 22:04:33,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42597402597402595 [2024-11-20 22:04:33,041 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 704 flow. Second operand 10 states and 328 transitions. [2024-11-20 22:04:33,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 198 transitions, 1408 flow [2024-11-20 22:04:33,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1387 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:33,048 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 909 flow [2024-11-20 22:04:33,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=909, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-11-20 22:04:33,048 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 35 predicate places. [2024-11-20 22:04:33,049 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 909 flow [2024-11-20 22:04:33,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:33,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:33,049 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-20 22:04:33,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 22:04:33,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 22:04:33,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:33,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash 66792994, now seen corresponding path program 2 times [2024-11-20 22:04:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:33,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150261310] [2024-11-20 22:04:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:33,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:33,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:33,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150261310] [2024-11-20 22:04:33,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150261310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:33,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398500996] [2024-11-20 22:04:33,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:04:33,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:33,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:33,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:33,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 22:04:33,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:04:33,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:33,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:04:33,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:04:33,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:04:33,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398500996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:33,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:33,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-20 22:04:33,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049642694] [2024-11-20 22:04:33,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:33,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 22:04:33,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:33,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 22:04:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-20 22:04:33,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:04:33,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 909 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:33,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:33,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:04:33,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:34,284 INFO L124 PetriNetUnfolderBase]: 1044/1880 cut-off events. [2024-11-20 22:04:34,285 INFO L125 PetriNetUnfolderBase]: For 1017/1017 co-relation queries the response was YES. [2024-11-20 22:04:34,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5094 conditions, 1880 events. 1044/1880 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11634 event pairs, 721 based on Foata normal form. 15/1566 useless extension candidates. Maximal degree in co-relation 5045. Up to 1553 conditions per place. [2024-11-20 22:04:34,297 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 65 selfloop transitions, 90 changer transitions 0/170 dead transitions. [2024-11-20 22:04:34,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1320 flow [2024-11-20 22:04:34,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 22:04:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 22:04:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 588 transitions. [2024-11-20 22:04:34,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-11-20 22:04:34,300 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 909 flow. Second operand 24 states and 588 transitions. [2024-11-20 22:04:34,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1320 flow [2024-11-20 22:04:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 170 transitions, 1294 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:34,308 INFO L231 Difference]: Finished difference. Result has 130 places, 170 transitions, 1216 flow [2024-11-20 22:04:34,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1216, PETRI_PLACES=130, PETRI_TRANSITIONS=170} [2024-11-20 22:04:34,309 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 57 predicate places. [2024-11-20 22:04:34,309 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 170 transitions, 1216 flow [2024-11-20 22:04:34,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:34,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:34,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:34,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 22:04:34,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:34,511 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:34,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1462387143, now seen corresponding path program 1 times [2024-11-20 22:04:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745758649] [2024-11-20 22:04:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:34,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:34,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:34,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745758649] [2024-11-20 22:04:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745758649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:34,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:34,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:34,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471953959] [2024-11-20 22:04:34,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:34,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:34,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:34,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:34,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 170 transitions, 1216 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:34,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:34,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:34,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:35,078 INFO L124 PetriNetUnfolderBase]: 1197/2419 cut-off events. [2024-11-20 22:04:35,078 INFO L125 PetriNetUnfolderBase]: For 1955/1955 co-relation queries the response was YES. [2024-11-20 22:04:35,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 2419 events. 1197/2419 cut-off events. For 1955/1955 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16324 event pairs, 783 based on Foata normal form. 32/2147 useless extension candidates. Maximal degree in co-relation 7160. Up to 1689 conditions per place. [2024-11-20 22:04:35,092 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 255 selfloop transitions, 3 changer transitions 15/291 dead transitions. [2024-11-20 22:04:35,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 291 transitions, 2707 flow [2024-11-20 22:04:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-20 22:04:35,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-20 22:04:35,094 INFO L175 Difference]: Start difference. First operand has 130 places, 170 transitions, 1216 flow. Second operand 4 states and 182 transitions. [2024-11-20 22:04:35,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 291 transitions, 2707 flow [2024-11-20 22:04:35,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 291 transitions, 2383 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-11-20 22:04:35,111 INFO L231 Difference]: Finished difference. Result has 124 places, 170 transitions, 1033 flow [2024-11-20 22:04:35,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=124, PETRI_TRANSITIONS=170} [2024-11-20 22:04:35,112 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 51 predicate places. [2024-11-20 22:04:35,112 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 170 transitions, 1033 flow [2024-11-20 22:04:35,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:35,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:35,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:35,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 22:04:35,113 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:35,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -267552598, now seen corresponding path program 1 times [2024-11-20 22:04:35,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:35,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082800187] [2024-11-20 22:04:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082800187] [2024-11-20 22:04:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082800187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:35,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099199268] [2024-11-20 22:04:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:35,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:35,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:35,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:35,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 170 transitions, 1033 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:35,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:35,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:35,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:35,701 INFO L124 PetriNetUnfolderBase]: 1515/3071 cut-off events. [2024-11-20 22:04:35,701 INFO L125 PetriNetUnfolderBase]: For 2068/2068 co-relation queries the response was YES. [2024-11-20 22:04:35,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8566 conditions, 3071 events. 1515/3071 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22172 event pairs, 1091 based on Foata normal form. 82/2777 useless extension candidates. Maximal degree in co-relation 8486. Up to 2006 conditions per place. [2024-11-20 22:04:35,715 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 173 selfloop transitions, 8 changer transitions 2/201 dead transitions. [2024-11-20 22:04:35,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 201 transitions, 1529 flow [2024-11-20 22:04:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-20 22:04:35,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2024-11-20 22:04:35,717 INFO L175 Difference]: Start difference. First operand has 124 places, 170 transitions, 1033 flow. Second operand 4 states and 179 transitions. [2024-11-20 22:04:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 201 transitions, 1529 flow [2024-11-20 22:04:35,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 201 transitions, 1524 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:35,729 INFO L231 Difference]: Finished difference. Result has 126 places, 170 transitions, 1053 flow [2024-11-20 22:04:35,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1053, PETRI_PLACES=126, PETRI_TRANSITIONS=170} [2024-11-20 22:04:35,730 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2024-11-20 22:04:35,730 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 170 transitions, 1053 flow [2024-11-20 22:04:35,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:35,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:35,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:35,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 22:04:35,730 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:35,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash -371542488, now seen corresponding path program 1 times [2024-11-20 22:04:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746503818] [2024-11-20 22:04:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:04:35,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:35,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746503818] [2024-11-20 22:04:35,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746503818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:35,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121093366] [2024-11-20 22:04:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:35,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:35,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:35,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 22:04:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:36,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 22:04:36,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:04:36,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:04:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121093366] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 22:04:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-20 22:04:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872361547] [2024-11-20 22:04:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:36,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:04:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:04:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:04:36,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:36,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 170 transitions, 1053 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:36,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:36,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:36,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:36,569 INFO L124 PetriNetUnfolderBase]: 1513/3069 cut-off events. [2024-11-20 22:04:36,569 INFO L125 PetriNetUnfolderBase]: For 2295/2295 co-relation queries the response was YES. [2024-11-20 22:04:36,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 3069 events. 1513/3069 cut-off events. For 2295/2295 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21666 event pairs, 1091 based on Foata normal form. 2/2692 useless extension candidates. Maximal degree in co-relation 8887. Up to 2028 conditions per place. [2024-11-20 22:04:36,585 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 203 selfloop transitions, 23 changer transitions 4/248 dead transitions. [2024-11-20 22:04:36,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 248 transitions, 2044 flow [2024-11-20 22:04:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:04:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:04:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-11-20 22:04:36,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-11-20 22:04:36,586 INFO L175 Difference]: Start difference. First operand has 126 places, 170 transitions, 1053 flow. Second operand 5 states and 208 transitions. [2024-11-20 22:04:36,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 248 transitions, 2044 flow [2024-11-20 22:04:36,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 248 transitions, 2028 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:36,600 INFO L231 Difference]: Finished difference. Result has 128 places, 169 transitions, 1077 flow [2024-11-20 22:04:36,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1077, PETRI_PLACES=128, PETRI_TRANSITIONS=169} [2024-11-20 22:04:36,601 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 55 predicate places. [2024-11-20 22:04:36,601 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 169 transitions, 1077 flow [2024-11-20 22:04:36,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:36,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:36,601 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-20 22:04:36,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 22:04:36,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:36,802 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:36,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash -856268684, now seen corresponding path program 1 times [2024-11-20 22:04:36,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:36,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066507049] [2024-11-20 22:04:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066507049] [2024-11-20 22:04:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066507049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873239583] [2024-11-20 22:04:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:37,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:37,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 22:04:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:37,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 22:04:37,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:37,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873239583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:37,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:37,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-20 22:04:37,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807439702] [2024-11-20 22:04:37,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:37,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 22:04:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 22:04:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-20 22:04:37,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:04:37,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 169 transitions, 1077 flow. Second operand has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:37,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:37,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:04:37,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:38,569 INFO L124 PetriNetUnfolderBase]: 1702/3825 cut-off events. [2024-11-20 22:04:38,570 INFO L125 PetriNetUnfolderBase]: For 7137/7137 co-relation queries the response was YES. [2024-11-20 22:04:38,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11941 conditions, 3825 events. 1702/3825 cut-off events. For 7137/7137 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 27510 event pairs, 1091 based on Foata normal form. 182/3580 useless extension candidates. Maximal degree in co-relation 11852. Up to 2588 conditions per place. [2024-11-20 22:04:38,593 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 67 selfloop transitions, 206 changer transitions 0/288 dead transitions. [2024-11-20 22:04:38,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 288 transitions, 2561 flow [2024-11-20 22:04:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 22:04:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 22:04:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 728 transitions. [2024-11-20 22:04:38,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-20 22:04:38,598 INFO L175 Difference]: Start difference. First operand has 128 places, 169 transitions, 1077 flow. Second operand 26 states and 728 transitions. [2024-11-20 22:04:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 288 transitions, 2561 flow [2024-11-20 22:04:38,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 288 transitions, 2525 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:38,622 INFO L231 Difference]: Finished difference. Result has 158 places, 288 transitions, 2519 flow [2024-11-20 22:04:38,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2519, PETRI_PLACES=158, PETRI_TRANSITIONS=288} [2024-11-20 22:04:38,623 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 85 predicate places. [2024-11-20 22:04:38,623 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 288 transitions, 2519 flow [2024-11-20 22:04:38,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:38,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:38,624 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:38,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 22:04:38,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 22:04:38,828 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:38,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1186021678, now seen corresponding path program 2 times [2024-11-20 22:04:38,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:38,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560865749] [2024-11-20 22:04:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:38,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 22:04:39,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:39,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560865749] [2024-11-20 22:04:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560865749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:39,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943261674] [2024-11-20 22:04:39,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:04:39,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:39,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:39,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:39,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 22:04:39,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:04:39,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:39,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:04:39,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-20 22:04:39,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-20 22:04:39,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943261674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:39,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:39,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2024-11-20 22:04:39,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715632437] [2024-11-20 22:04:39,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:39,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:04:39,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:39,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:04:39,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:04:39,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2024-11-20 22:04:39,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 288 transitions, 2519 flow. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:39,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:39,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2024-11-20 22:04:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:40,435 INFO L124 PetriNetUnfolderBase]: 3011/6361 cut-off events. [2024-11-20 22:04:40,435 INFO L125 PetriNetUnfolderBase]: For 11300/11300 co-relation queries the response was YES. [2024-11-20 22:04:40,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21718 conditions, 6361 events. 3011/6361 cut-off events. For 11300/11300 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 49196 event pairs, 2000 based on Foata normal form. 4/5619 useless extension candidates. Maximal degree in co-relation 21636. Up to 2714 conditions per place. [2024-11-20 22:04:40,465 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 310 selfloop transitions, 135 changer transitions 0/459 dead transitions. [2024-11-20 22:04:40,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 459 transitions, 5045 flow [2024-11-20 22:04:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 22:04:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 22:04:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 383 transitions. [2024-11-20 22:04:40,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31087662337662336 [2024-11-20 22:04:40,467 INFO L175 Difference]: Start difference. First operand has 158 places, 288 transitions, 2519 flow. Second operand 16 states and 383 transitions. [2024-11-20 22:04:40,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 459 transitions, 5045 flow [2024-11-20 22:04:40,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 459 transitions, 3914 flow, removed 399 selfloop flow, removed 16 redundant places. [2024-11-20 22:04:40,529 INFO L231 Difference]: Finished difference. Result has 159 places, 362 transitions, 2817 flow [2024-11-20 22:04:40,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2817, PETRI_PLACES=159, PETRI_TRANSITIONS=362} [2024-11-20 22:04:40,529 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 86 predicate places. [2024-11-20 22:04:40,530 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 362 transitions, 2817 flow [2024-11-20 22:04:40,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:40,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:40,530 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, 1, 1] [2024-11-20 22:04:40,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 22:04:40,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 22:04:40,731 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:40,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash -380536387, now seen corresponding path program 1 times [2024-11-20 22:04:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056800406] [2024-11-20 22:04:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:04:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056800406] [2024-11-20 22:04:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056800406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006573251] [2024-11-20 22:04:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:40,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:40,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:40,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 22:04:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:40,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:40,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:04:41,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:41,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006573251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:41,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:41,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-20 22:04:41,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441280310] [2024-11-20 22:04:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:41,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:04:41,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:41,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 362 transitions, 2817 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:41,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:41,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:41,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:42,151 INFO L124 PetriNetUnfolderBase]: 4156/7775 cut-off events. [2024-11-20 22:04:42,151 INFO L125 PetriNetUnfolderBase]: For 10123/10309 co-relation queries the response was YES. [2024-11-20 22:04:42,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25189 conditions, 7775 events. 4156/7775 cut-off events. For 10123/10309 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53768 event pairs, 924 based on Foata normal form. 3/6584 useless extension candidates. Maximal degree in co-relation 23568. Up to 3518 conditions per place. [2024-11-20 22:04:42,181 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 356 selfloop transitions, 7 changer transitions 0/380 dead transitions. [2024-11-20 22:04:42,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 380 transitions, 3609 flow [2024-11-20 22:04:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-20 22:04:42,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-20 22:04:42,182 INFO L175 Difference]: Start difference. First operand has 159 places, 362 transitions, 2817 flow. Second operand 4 states and 172 transitions. [2024-11-20 22:04:42,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 380 transitions, 3609 flow [2024-11-20 22:04:42,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 380 transitions, 3576 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-20 22:04:42,237 INFO L231 Difference]: Finished difference. Result has 160 places, 366 transitions, 2843 flow [2024-11-20 22:04:42,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2843, PETRI_PLACES=160, PETRI_TRANSITIONS=366} [2024-11-20 22:04:42,238 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 87 predicate places. [2024-11-20 22:04:42,238 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 366 transitions, 2843 flow [2024-11-20 22:04:42,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:42,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:42,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:42,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 22:04:42,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:42,439 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:42,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1006088569, now seen corresponding path program 1 times [2024-11-20 22:04:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837104693] [2024-11-20 22:04:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:42,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:04:42,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:42,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837104693] [2024-11-20 22:04:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837104693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:04:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580439137] [2024-11-20 22:04:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:42,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:04:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:42,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:04:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 22:04:42,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:42,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 366 transitions, 2843 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:42,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:42,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:42,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:44,259 INFO L124 PetriNetUnfolderBase]: 4990/10453 cut-off events. [2024-11-20 22:04:44,259 INFO L125 PetriNetUnfolderBase]: For 21552/21622 co-relation queries the response was YES. [2024-11-20 22:04:44,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36756 conditions, 10453 events. 4990/10453 cut-off events. For 21552/21622 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 82701 event pairs, 1242 based on Foata normal form. 100/9855 useless extension candidates. Maximal degree in co-relation 33891. Up to 4315 conditions per place. [2024-11-20 22:04:44,313 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 467 selfloop transitions, 35 changer transitions 18/537 dead transitions. [2024-11-20 22:04:44,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 537 transitions, 5213 flow [2024-11-20 22:04:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:04:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:04:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2024-11-20 22:04:44,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-20 22:04:44,314 INFO L175 Difference]: Start difference. First operand has 160 places, 366 transitions, 2843 flow. Second operand 6 states and 245 transitions. [2024-11-20 22:04:44,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 537 transitions, 5213 flow [2024-11-20 22:04:44,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 537 transitions, 5212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:44,565 INFO L231 Difference]: Finished difference. Result has 166 places, 380 transitions, 3127 flow [2024-11-20 22:04:44,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3127, PETRI_PLACES=166, PETRI_TRANSITIONS=380} [2024-11-20 22:04:44,567 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 93 predicate places. [2024-11-20 22:04:44,567 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 380 transitions, 3127 flow [2024-11-20 22:04:44,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:44,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:44,567 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:44,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 22:04:44,568 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:44,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash -868808028, now seen corresponding path program 2 times [2024-11-20 22:04:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911117679] [2024-11-20 22:04:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:44,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911117679] [2024-11-20 22:04:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911117679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136478137] [2024-11-20 22:04:44,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:04:44,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:44,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:44,804 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:44,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:04:44,948 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:04:44,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:44,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:44,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:04:45,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:04:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136478137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:45,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-20 22:04:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038273062] [2024-11-20 22:04:45,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:45,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 22:04:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 22:04:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 22:04:45,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-20 22:04:45,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 380 transitions, 3127 flow. Second operand has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:45,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:45,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-20 22:04:45,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:47,165 INFO L124 PetriNetUnfolderBase]: 5118/11063 cut-off events. [2024-11-20 22:04:47,165 INFO L125 PetriNetUnfolderBase]: For 23887/23887 co-relation queries the response was YES. [2024-11-20 22:04:47,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39971 conditions, 11063 events. 5118/11063 cut-off events. For 23887/23887 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 89547 event pairs, 2518 based on Foata normal form. 24/10244 useless extension candidates. Maximal degree in co-relation 36602. Up to 6374 conditions per place. [2024-11-20 22:04:47,218 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 551 selfloop transitions, 120 changer transitions 0/687 dead transitions. [2024-11-20 22:04:47,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 687 transitions, 7096 flow [2024-11-20 22:04:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:04:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 22:04:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 463 transitions. [2024-11-20 22:04:47,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40086580086580087 [2024-11-20 22:04:47,220 INFO L175 Difference]: Start difference. First operand has 166 places, 380 transitions, 3127 flow. Second operand 15 states and 463 transitions. [2024-11-20 22:04:47,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 687 transitions, 7096 flow [2024-11-20 22:04:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 687 transitions, 7020 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-20 22:04:47,383 INFO L231 Difference]: Finished difference. Result has 174 places, 402 transitions, 3532 flow [2024-11-20 22:04:47,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3532, PETRI_PLACES=174, PETRI_TRANSITIONS=402} [2024-11-20 22:04:47,384 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 101 predicate places. [2024-11-20 22:04:47,384 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 402 transitions, 3532 flow [2024-11-20 22:04:47,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:47,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:47,384 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, 1, 1, 1, 1, 1] [2024-11-20 22:04:47,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 22:04:47,585 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 [2024-11-20 22:04:47,585 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:47,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1422050239, now seen corresponding path program 1 times [2024-11-20 22:04:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314631709] [2024-11-20 22:04:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314631709] [2024-11-20 22:04:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314631709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881470857] [2024-11-20 22:04:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:47,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:47,665 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:47,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 22:04:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:47,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:47,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:47,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:47,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881470857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:47,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:47,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-20 22:04:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723570137] [2024-11-20 22:04:47,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:47,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 22:04:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 22:04:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 22:04:47,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:47,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 402 transitions, 3532 flow. Second operand has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:47,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:47,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:47,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:50,969 INFO L124 PetriNetUnfolderBase]: 10830/19743 cut-off events. [2024-11-20 22:04:50,969 INFO L125 PetriNetUnfolderBase]: For 42899/43485 co-relation queries the response was YES. [2024-11-20 22:04:51,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67596 conditions, 19743 events. 10830/19743 cut-off events. For 42899/43485 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 155838 event pairs, 1584 based on Foata normal form. 274/19269 useless extension candidates. Maximal degree in co-relation 64158. Up to 5930 conditions per place. [2024-11-20 22:04:51,115 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 444 selfloop transitions, 9 changer transitions 2/471 dead transitions. [2024-11-20 22:04:51,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 471 transitions, 4724 flow [2024-11-20 22:04:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:04:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:04:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 283 transitions. [2024-11-20 22:04:51,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125541125541125 [2024-11-20 22:04:51,116 INFO L175 Difference]: Start difference. First operand has 174 places, 402 transitions, 3532 flow. Second operand 6 states and 283 transitions. [2024-11-20 22:04:51,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 471 transitions, 4724 flow [2024-11-20 22:04:51,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 471 transitions, 4406 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-11-20 22:04:51,482 INFO L231 Difference]: Finished difference. Result has 172 places, 409 transitions, 3334 flow [2024-11-20 22:04:51,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3334, PETRI_PLACES=172, PETRI_TRANSITIONS=409} [2024-11-20 22:04:51,483 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 99 predicate places. [2024-11-20 22:04:51,483 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 409 transitions, 3334 flow [2024-11-20 22:04:51,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:51,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:51,484 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, 1, 1, 1, 1, 1] [2024-11-20 22:04:51,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 22:04:51,684 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,SelfDestructingSolverStorable21 [2024-11-20 22:04:51,684 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1422050246, now seen corresponding path program 1 times [2024-11-20 22:04:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178827059] [2024-11-20 22:04:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178827059] [2024-11-20 22:04:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178827059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296240122] [2024-11-20 22:04:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:51,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:51,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:51,770 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) [2024-11-20 22:04:51,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 22:04:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:51,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:51,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:52,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296240122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:52,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-20 22:04:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437980104] [2024-11-20 22:04:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:52,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:52,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 22:04:52,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:04:52,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 409 transitions, 3334 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:52,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:52,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:04:52,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:54,458 INFO L124 PetriNetUnfolderBase]: 9512/17687 cut-off events. [2024-11-20 22:04:54,458 INFO L125 PetriNetUnfolderBase]: For 55517/56960 co-relation queries the response was YES. [2024-11-20 22:04:54,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63434 conditions, 17687 events. 9512/17687 cut-off events. For 55517/56960 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 138803 event pairs, 1988 based on Foata normal form. 868/18133 useless extension candidates. Maximal degree in co-relation 60125. Up to 7880 conditions per place. [2024-11-20 22:04:54,570 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 394 selfloop transitions, 11 changer transitions 0/421 dead transitions. [2024-11-20 22:04:54,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 421 transitions, 4180 flow [2024-11-20 22:04:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-20 22:04:54,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551948051948052 [2024-11-20 22:04:54,571 INFO L175 Difference]: Start difference. First operand has 172 places, 409 transitions, 3334 flow. Second operand 4 states and 170 transitions. [2024-11-20 22:04:54,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 421 transitions, 4180 flow [2024-11-20 22:04:54,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 421 transitions, 4160 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-20 22:04:54,721 INFO L231 Difference]: Finished difference. Result has 174 places, 408 transitions, 3332 flow [2024-11-20 22:04:54,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3332, PETRI_PLACES=174, PETRI_TRANSITIONS=408} [2024-11-20 22:04:54,722 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 101 predicate places. [2024-11-20 22:04:54,722 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 408 transitions, 3332 flow [2024-11-20 22:04:54,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:54,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:54,723 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, 1, 1, 1, 1, 1] [2024-11-20 22:04:54,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 22:04:54,923 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,SelfDestructingSolverStorable22 [2024-11-20 22:04:54,923 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:04:54,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1422050245, now seen corresponding path program 1 times [2024-11-20 22:04:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259420029] [2024-11-20 22:04:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:04:55,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:55,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259420029] [2024-11-20 22:04:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259420029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35937768] [2024-11-20 22:04:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:55,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:55,130 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) [2024-11-20 22:04:55,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 22:04:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:55,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:04:55,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:55,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:04:55,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35937768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:55,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:55,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2024-11-20 22:04:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290667712] [2024-11-20 22:04:55,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:55,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 22:04:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 22:04:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:04:55,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:04:55,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 408 transitions, 3332 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:55,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:55,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:04:55,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:59,579 INFO L124 PetriNetUnfolderBase]: 12068/24127 cut-off events. [2024-11-20 22:04:59,579 INFO L125 PetriNetUnfolderBase]: For 86058/87117 co-relation queries the response was YES. [2024-11-20 22:04:59,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81776 conditions, 24127 events. 12068/24127 cut-off events. For 86058/87117 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 212711 event pairs, 4516 based on Foata normal form. 2974/26816 useless extension candidates. Maximal degree in co-relation 76886. Up to 9236 conditions per place. [2024-11-20 22:04:59,753 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 480 selfloop transitions, 112 changer transitions 6/611 dead transitions. [2024-11-20 22:04:59,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 611 transitions, 6090 flow [2024-11-20 22:04:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:04:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 22:04:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 269 transitions. [2024-11-20 22:04:59,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38816738816738816 [2024-11-20 22:04:59,754 INFO L175 Difference]: Start difference. First operand has 174 places, 408 transitions, 3332 flow. Second operand 9 states and 269 transitions. [2024-11-20 22:04:59,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 611 transitions, 6090 flow [2024-11-20 22:05:00,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 611 transitions, 6045 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-20 22:05:00,033 INFO L231 Difference]: Finished difference. Result has 177 places, 468 transitions, 4412 flow [2024-11-20 22:05:00,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4412, PETRI_PLACES=177, PETRI_TRANSITIONS=468} [2024-11-20 22:05:00,034 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 104 predicate places. [2024-11-20 22:05:00,034 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 468 transitions, 4412 flow [2024-11-20 22:05:00,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:00,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:00,034 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:00,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 22:05:00,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:00,235 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:05:00,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1301440830, now seen corresponding path program 2 times [2024-11-20 22:05:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:00,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837935066] [2024-11-20 22:05:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:05:00,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837935066] [2024-11-20 22:05:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837935066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542048991] [2024-11-20 22:05:00,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:05:00,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:00,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:00,400 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) [2024-11-20 22:05:00,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 22:05:00,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:05:00,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:00,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:05:00,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:05:00,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:05:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542048991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:00,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:05:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980320063] [2024-11-20 22:05:00,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:00,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 22:05:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 22:05:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 22:05:00,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-20 22:05:00,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 468 transitions, 4412 flow. Second operand has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:00,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:00,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-20 22:05:00,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:08,016 INFO L124 PetriNetUnfolderBase]: 22638/41015 cut-off events. [2024-11-20 22:05:08,016 INFO L125 PetriNetUnfolderBase]: For 133225/134025 co-relation queries the response was YES. [2024-11-20 22:05:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139121 conditions, 41015 events. 22638/41015 cut-off events. For 133225/134025 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 347833 event pairs, 1714 based on Foata normal form. 2206/42673 useless extension candidates. Maximal degree in co-relation 133624. Up to 8074 conditions per place. [2024-11-20 22:05:08,487 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 544 selfloop transitions, 47 changer transitions 0/607 dead transitions. [2024-11-20 22:05:08,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 607 transitions, 6274 flow [2024-11-20 22:05:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 22:05:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 22:05:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-11-20 22:05:08,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54004329004329 [2024-11-20 22:05:08,489 INFO L175 Difference]: Start difference. First operand has 177 places, 468 transitions, 4412 flow. Second operand 12 states and 499 transitions. [2024-11-20 22:05:08,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 607 transitions, 6274 flow [2024-11-20 22:05:08,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 607 transitions, 6210 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-20 22:05:08,939 INFO L231 Difference]: Finished difference. Result has 193 places, 507 transitions, 4950 flow [2024-11-20 22:05:08,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4950, PETRI_PLACES=193, PETRI_TRANSITIONS=507} [2024-11-20 22:05:08,939 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 120 predicate places. [2024-11-20 22:05:08,939 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 507 transitions, 4950 flow [2024-11-20 22:05:08,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:08,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:08,940 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-11-20 22:05:08,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 22:05:09,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:09,141 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:05:09,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1634458378, now seen corresponding path program 2 times [2024-11-20 22:05:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:09,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845961008] [2024-11-20 22:05:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845961008] [2024-11-20 22:05:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845961008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962631978] [2024-11-20 22:05:09,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:05:09,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:09,662 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) [2024-11-20 22:05:09,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 22:05:09,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:05:09,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:09,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:05:09,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-20 22:05:09,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-20 22:05:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962631978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:09,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:09,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-11-20 22:05:09,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972283716] [2024-11-20 22:05:09,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:09,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-20 22:05:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-20 22:05:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-20 22:05:10,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:05:10,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 507 transitions, 4950 flow. Second operand has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:10,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:10,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:05:10,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:19,276 INFO L124 PetriNetUnfolderBase]: 22695/41753 cut-off events. [2024-11-20 22:05:19,276 INFO L125 PetriNetUnfolderBase]: For 191720/192808 co-relation queries the response was YES. [2024-11-20 22:05:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155339 conditions, 41753 events. 22695/41753 cut-off events. For 191720/192808 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 358714 event pairs, 13482 based on Foata normal form. 406/41851 useless extension candidates. Maximal degree in co-relation 147474. Up to 32396 conditions per place. [2024-11-20 22:05:19,797 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 121 selfloop transitions, 399 changer transitions 0/533 dead transitions. [2024-11-20 22:05:19,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 533 transitions, 6205 flow [2024-11-20 22:05:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-20 22:05:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-20 22:05:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1335 transitions. [2024-11-20 22:05:19,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3041695146958305 [2024-11-20 22:05:19,801 INFO L175 Difference]: Start difference. First operand has 193 places, 507 transitions, 4950 flow. Second operand 57 states and 1335 transitions. [2024-11-20 22:05:19,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 533 transitions, 6205 flow [2024-11-20 22:05:20,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 533 transitions, 6103 flow, removed 51 selfloop flow, removed 0 redundant places. [2024-11-20 22:05:20,766 INFO L231 Difference]: Finished difference. Result has 250 places, 533 transitions, 5940 flow [2024-11-20 22:05:20,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5940, PETRI_PLACES=250, PETRI_TRANSITIONS=533} [2024-11-20 22:05:20,767 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 177 predicate places. [2024-11-20 22:05:20,767 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 533 transitions, 5940 flow [2024-11-20 22:05:20,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:20,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:20,768 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2024-11-20 22:05:20,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 22:05:20,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-20 22:05:20,969 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-20 22:05:20,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash -821472769, now seen corresponding path program 1 times [2024-11-20 22:05:20,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337723263] [2024-11-20 22:05:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:21,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337723263] [2024-11-20 22:05:21,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337723263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:21,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138038444] [2024-11-20 22:05:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:21,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:21,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:21,574 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) [2024-11-20 22:05:21,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 22:05:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:21,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 22:05:21,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:21,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:22,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138038444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:22,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:22,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2024-11-20 22:05:22,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768433440] [2024-11-20 22:05:22,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:22,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-20 22:05:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-20 22:05:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2024-11-20 22:05:22,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-20 22:05:22,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 533 transitions, 5940 flow. Second operand has 60 states, 60 states have (on average 21.05) internal successors, (1263), 60 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:22,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:22,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-20 22:05:22,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand