./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:27:24,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:27:24,288 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:27:24,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:27:24,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:27:24,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:27:24,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:27:24,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:27:24,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:27:24,325 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:27:24,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:27:24,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:27:24,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:27:24,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:27:24,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:27:24,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:27:24,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:27:24,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:27:24,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:27:24,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:27:24,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:27:24,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:27:24,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:27:24,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:27:24,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:27:24,337 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:27:24,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:27:24,337 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:27:24,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:27:24,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:27:24,338 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:27:24,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:27:24,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:27:24,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:27:24,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:24,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:27:24,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:27:24,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:27:24,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:27:24,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:27:24,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:27:24,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:27:24,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:27:24,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:27:24,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-10 22:27:24,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:27:24,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:27:24,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:27:24,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:27:24,601 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:27:24,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-10 22:27:25,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:27:26,133 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:27:26,135 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-10 22:27:26,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9743025a8/c33d0c6554984415a466b34f001c8aef/FLAGa9de397e0 [2024-11-10 22:27:26,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9743025a8/c33d0c6554984415a466b34f001c8aef [2024-11-10 22:27:26,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:27:26,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:27:26,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:26,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:27:26,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:27:26,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229cbd7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26, skipping insertion in model container [2024-11-10 22:27:26,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:27:26,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:26,789 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:27:26,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:26,841 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:27:26,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26 WrapperNode [2024-11-10 22:27:26,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:26,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:26,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:27:26,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:27:26,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,891 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 426 [2024-11-10 22:27:26,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:26,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:27:26,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:27:26,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:27:26,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,935 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]. [2024-11-10 22:27:26,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,948 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:27:26,963 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:27:26,964 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:27:26,964 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:27:26,964 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (1/1) ... [2024-11-10 22:27:26,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:26,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:27,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:27:27,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:27:27,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:27:27,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 22:27:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 22:27:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 22:27:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 22:27:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:27:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:27:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:27:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:27:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:27:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:27:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:27:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:27:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 22:27:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 22:27:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 22:27:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 22:27:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:27:27,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:27:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:27:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:27:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:27:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:27:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:27:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:27:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:27:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:27:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:27:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:27:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:27:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:27:27,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:27:27,071 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:27:27,221 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:27:27,223 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:27:27,919 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:27:27,919 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:27:28,420 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:27:28,421 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:27:28,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:28 BoogieIcfgContainer [2024-11-10 22:27:28,422 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:27:28,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:27:28,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:27:28,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:27:28,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:27:26" (1/3) ... [2024-11-10 22:27:28,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56efc8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:28, skipping insertion in model container [2024-11-10 22:27:28,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:26" (2/3) ... [2024-11-10 22:27:28,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56efc8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:28, skipping insertion in model container [2024-11-10 22:27:28,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:28" (3/3) ... [2024-11-10 22:27:28,432 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-10 22:27:28,452 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:27:28,452 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-10 22:27:28,453 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:27:28,562 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:27:28,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 104 transitions, 229 flow [2024-11-10 22:27:28,649 INFO L124 PetriNetUnfolderBase]: 18/101 cut-off events. [2024-11-10 22:27:28,649 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:27:28,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 18/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 272 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2024-11-10 22:27:28,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 104 transitions, 229 flow [2024-11-10 22:27:28,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 99 transitions, 213 flow [2024-11-10 22:27:28,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:27:28,680 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;@6eaffa9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:27:28,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-10 22:27:28,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:27:28,687 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:27:28,687 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:27:28,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:28,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:27:28,688 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:28,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 37440832, now seen corresponding path program 1 times [2024-11-10 22:27:28,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187839163] [2024-11-10 22:27:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187839163] [2024-11-10 22:27:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187839163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:29,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392481562] [2024-11-10 22:27:29,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:29,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:29,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-10 22:27:29,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 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) [2024-11-10 22:27:29,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:29,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-10 22:27:29,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:29,744 INFO L124 PetriNetUnfolderBase]: 1285/2177 cut-off events. [2024-11-10 22:27:29,744 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-10 22:27:29,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2177 events. 1285/2177 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 13510 event pairs, 724 based on Foata normal form. 357/1757 useless extension candidates. Maximal degree in co-relation 3797. Up to 1733 conditions per place. [2024-11-10 22:27:29,763 INFO L140 encePairwiseOnDemand]: 67/104 looper letters, 48 selfloop transitions, 14 changer transitions 1/96 dead transitions. [2024-11-10 22:27:29,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 333 flow [2024-11-10 22:27:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-10 22:27:29,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-10 22:27:29,778 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 213 flow. Second operand 4 states and 234 transitions. [2024-11-10 22:27:29,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 333 flow [2024-11-10 22:27:29,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:29,793 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 291 flow [2024-11-10 22:27:29,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2024-11-10 22:27:29,799 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-10 22:27:29,799 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 291 flow [2024-11-10 22:27:29,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 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) [2024-11-10 22:27:29,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:29,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:27:29,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:27:29,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:29,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1352688474, now seen corresponding path program 1 times [2024-11-10 22:27:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:29,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017909206] [2024-11-10 22:27:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:29,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017909206] [2024-11-10 22:27:29,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017909206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:29,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916390647] [2024-11-10 22:27:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:29,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:29,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:29,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:27:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:30,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:30,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:30,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:30,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916390647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:30,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:30,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:27:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731283101] [2024-11-10 22:27:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:30,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:30,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:27:30,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-10 22:27:30,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:30,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:30,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-10 22:27:30,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:30,680 INFO L124 PetriNetUnfolderBase]: 1281/2166 cut-off events. [2024-11-10 22:27:30,680 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-10 22:27:30,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4064 conditions, 2166 events. 1281/2166 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 13348 event pairs, 722 based on Foata normal form. 4/1393 useless extension candidates. Maximal degree in co-relation 3961. Up to 1706 conditions per place. [2024-11-10 22:27:30,695 INFO L140 encePairwiseOnDemand]: 86/104 looper letters, 34 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2024-11-10 22:27:30,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 391 flow [2024-11-10 22:27:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-11-10 22:27:30,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-11-10 22:27:30,698 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 291 flow. Second operand 6 states and 278 transitions. [2024-11-10 22:27:30,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 391 flow [2024-11-10 22:27:30,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:27:30,702 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 323 flow [2024-11-10 22:27:30,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-11-10 22:27:30,703 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-10 22:27:30,703 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 323 flow [2024-11-10 22:27:30,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:30,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:30,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:27:30,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:27:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:30,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:30,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1016331381, now seen corresponding path program 1 times [2024-11-10 22:27:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:30,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890781084] [2024-11-10 22:27:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890781084] [2024-11-10 22:27:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890781084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757749134] [2024-11-10 22:27:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:31,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:31,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:31,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:27:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:31,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:31,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:31,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757749134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:31,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:31,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:27:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955792145] [2024-11-10 22:27:31,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:31,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:31,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-10 22:27:31,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 323 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:31,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:31,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-10 22:27:31,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:31,876 INFO L124 PetriNetUnfolderBase]: 1293/2238 cut-off events. [2024-11-10 22:27:31,876 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-10 22:27:31,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 2238 events. 1293/2238 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 13982 event pairs, 722 based on Foata normal form. 12/1477 useless extension candidates. Maximal degree in co-relation 3965. Up to 1728 conditions per place. [2024-11-10 22:27:31,891 INFO L140 encePairwiseOnDemand]: 86/104 looper letters, 44 selfloop transitions, 50 changer transitions 0/127 dead transitions. [2024-11-10 22:27:31,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 739 flow [2024-11-10 22:27:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 466 transitions. [2024-11-10 22:27:31,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4480769230769231 [2024-11-10 22:27:31,893 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 323 flow. Second operand 10 states and 466 transitions. [2024-11-10 22:27:31,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 739 flow [2024-11-10 22:27:31,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 127 transitions, 623 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:31,898 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 603 flow [2024-11-10 22:27:31,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-11-10 22:27:31,900 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2024-11-10 22:27:31,900 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 603 flow [2024-11-10 22:27:31,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:31,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:31,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:31,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:27:32,105 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,SelfDestructingSolverStorable2 [2024-11-10 22:27:32,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:32,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 469556317, now seen corresponding path program 1 times [2024-11-10 22:27:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:32,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393666915] [2024-11-10 22:27:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:32,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393666915] [2024-11-10 22:27:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393666915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386331087] [2024-11-10 22:27:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:32,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:32,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:27:32,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:32,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:32,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:27:32,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:32,602 INFO L124 PetriNetUnfolderBase]: 1294/2244 cut-off events. [2024-11-10 22:27:32,602 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2024-11-10 22:27:32,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4307 conditions, 2244 events. 1294/2244 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 13981 event pairs, 722 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 4172. Up to 1763 conditions per place. [2024-11-10 22:27:32,615 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 87 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2024-11-10 22:27:32,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 799 flow [2024-11-10 22:27:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-10 22:27:32,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5216346153846154 [2024-11-10 22:27:32,619 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 603 flow. Second operand 4 states and 217 transitions. [2024-11-10 22:27:32,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 799 flow [2024-11-10 22:27:32,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 751 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:32,624 INFO L231 Difference]: Finished difference. Result has 96 places, 130 transitions, 596 flow [2024-11-10 22:27:32,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=596, PETRI_PLACES=96, PETRI_TRANSITIONS=130} [2024-11-10 22:27:32,625 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-10 22:27:32,625 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 130 transitions, 596 flow [2024-11-10 22:27:32,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:32,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:32,626 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:32,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:27:32,627 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:32,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash -515346661, now seen corresponding path program 1 times [2024-11-10 22:27:32,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012359303] [2024-11-10 22:27:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:27:32,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:32,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012359303] [2024-11-10 22:27:32,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012359303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:32,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:32,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:27:32,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549005228] [2024-11-10 22:27:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:32,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:27:32,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-10 22:27:32,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 130 transitions, 596 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 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) [2024-11-10 22:27:32,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:32,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-10 22:27:32,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:33,369 INFO L124 PetriNetUnfolderBase]: 1803/3252 cut-off events. [2024-11-10 22:27:33,370 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-10 22:27:33,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 3252 events. 1803/3252 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 23147 event pairs, 1177 based on Foata normal form. 87/2292 useless extension candidates. Maximal degree in co-relation 6279. Up to 1779 conditions per place. [2024-11-10 22:27:33,392 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 139 selfloop transitions, 17 changer transitions 0/189 dead transitions. [2024-11-10 22:27:33,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 189 transitions, 1178 flow [2024-11-10 22:27:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-11-10 22:27:33,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5336538461538461 [2024-11-10 22:27:33,395 INFO L175 Difference]: Start difference. First operand has 96 places, 130 transitions, 596 flow. Second operand 6 states and 333 transitions. [2024-11-10 22:27:33,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 189 transitions, 1178 flow [2024-11-10 22:27:33,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 189 transitions, 1165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:33,401 INFO L231 Difference]: Finished difference. Result has 104 places, 141 transitions, 744 flow [2024-11-10 22:27:33,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=104, PETRI_TRANSITIONS=141} [2024-11-10 22:27:33,403 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-10 22:27:33,404 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 141 transitions, 744 flow [2024-11-10 22:27:33,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 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) [2024-11-10 22:27:33,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:33,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:33,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:27:33,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:33,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1984235323, now seen corresponding path program 1 times [2024-11-10 22:27:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:33,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912139931] [2024-11-10 22:27:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912139931] [2024-11-10 22:27:33,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912139931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:33,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639207433] [2024-11-10 22:27:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:33,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:33,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:27:33,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 141 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:33,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:33,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:27:33,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:34,021 INFO L124 PetriNetUnfolderBase]: 1815/3326 cut-off events. [2024-11-10 22:27:34,021 INFO L125 PetriNetUnfolderBase]: For 936/954 co-relation queries the response was YES. [2024-11-10 22:27:34,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6752 conditions, 3326 events. 1815/3326 cut-off events. For 936/954 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 24059 event pairs, 1177 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 6713. Up to 2583 conditions per place. [2024-11-10 22:27:34,044 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 115 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-11-10 22:27:34,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 162 transitions, 1133 flow [2024-11-10 22:27:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-10 22:27:34,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-11-10 22:27:34,048 INFO L175 Difference]: Start difference. First operand has 104 places, 141 transitions, 744 flow. Second operand 4 states and 220 transitions. [2024-11-10 22:27:34,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 162 transitions, 1133 flow [2024-11-10 22:27:34,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 162 transitions, 1127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:34,056 INFO L231 Difference]: Finished difference. Result has 108 places, 149 transitions, 837 flow [2024-11-10 22:27:34,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=837, PETRI_PLACES=108, PETRI_TRANSITIONS=149} [2024-11-10 22:27:34,057 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 17 predicate places. [2024-11-10 22:27:34,057 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 149 transitions, 837 flow [2024-11-10 22:27:34,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:34,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:34,057 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:27:34,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:27:34,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:34,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1169070461, now seen corresponding path program 2 times [2024-11-10 22:27:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179595162] [2024-11-10 22:27:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:34,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:34,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:34,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179595162] [2024-11-10 22:27:34,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179595162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:34,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874305343] [2024-11-10 22:27:34,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:34,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:34,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:34,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:34,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:27:34,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:34,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:34,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:34,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:34,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874305343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:34,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:34,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:27:34,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615528374] [2024-11-10 22:27:34,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:34,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:27:34,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:34,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:27:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:27:34,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-10 22:27:34,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 149 transitions, 837 flow. Second operand has 14 states, 14 states have (on average 33.142857142857146) internal successors, (464), 14 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:34,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:34,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-10 22:27:34,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:35,426 INFO L124 PetriNetUnfolderBase]: 1823/3373 cut-off events. [2024-11-10 22:27:35,427 INFO L125 PetriNetUnfolderBase]: For 1140/1158 co-relation queries the response was YES. [2024-11-10 22:27:35,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 3373 events. 1823/3373 cut-off events. For 1140/1158 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 24428 event pairs, 1177 based on Foata normal form. 9/2321 useless extension candidates. Maximal degree in co-relation 6941. Up to 2560 conditions per place. [2024-11-10 22:27:35,449 INFO L140 encePairwiseOnDemand]: 83/104 looper letters, 56 selfloop transitions, 96 changer transitions 0/181 dead transitions. [2024-11-10 22:27:35,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 181 transitions, 1283 flow [2024-11-10 22:27:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:27:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:27:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 902 transitions. [2024-11-10 22:27:35,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3613782051282051 [2024-11-10 22:27:35,453 INFO L175 Difference]: Start difference. First operand has 108 places, 149 transitions, 837 flow. Second operand 24 states and 902 transitions. [2024-11-10 22:27:35,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 181 transitions, 1283 flow [2024-11-10 22:27:35,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 181 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:35,462 INFO L231 Difference]: Finished difference. Result has 132 places, 176 transitions, 1214 flow [2024-11-10 22:27:35,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1214, PETRI_PLACES=132, PETRI_TRANSITIONS=176} [2024-11-10 22:27:35,463 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2024-11-10 22:27:35,463 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 176 transitions, 1214 flow [2024-11-10 22:27:35,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 33.142857142857146) internal successors, (464), 14 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:35,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:35,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:35,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:27:35,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:35,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:35,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash -299276311, now seen corresponding path program 1 times [2024-11-10 22:27:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187617418] [2024-11-10 22:27:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:35,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:35,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187617418] [2024-11-10 22:27:35,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187617418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:35,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424477299] [2024-11-10 22:27:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:35,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:35,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:35,777 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:35,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:27:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:35,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:35,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:35,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424477299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:35,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:27:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383977477] [2024-11-10 22:27:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:35,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:35,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:35,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:27:35,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:27:35,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 176 transitions, 1214 flow. Second operand has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:35,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:35,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:27:35,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:36,563 INFO L124 PetriNetUnfolderBase]: 1823/3372 cut-off events. [2024-11-10 22:27:36,563 INFO L125 PetriNetUnfolderBase]: For 1682/1700 co-relation queries the response was YES. [2024-11-10 22:27:36,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 3372 events. 1823/3372 cut-off events. For 1682/1700 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 24362 event pairs, 1177 based on Foata normal form. 1/2311 useless extension candidates. Maximal degree in co-relation 7110. Up to 2622 conditions per place. [2024-11-10 22:27:36,590 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 107 selfloop transitions, 19 changer transitions 0/175 dead transitions. [2024-11-10 22:27:36,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 175 transitions, 1462 flow [2024-11-10 22:27:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2024-11-10 22:27:36,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-10 22:27:36,592 INFO L175 Difference]: Start difference. First operand has 132 places, 176 transitions, 1214 flow. Second operand 6 states and 299 transitions. [2024-11-10 22:27:36,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 175 transitions, 1462 flow [2024-11-10 22:27:36,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 175 transitions, 1276 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-11-10 22:27:36,602 INFO L231 Difference]: Finished difference. Result has 126 places, 175 transitions, 1062 flow [2024-11-10 22:27:36,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1062, PETRI_PLACES=126, PETRI_TRANSITIONS=175} [2024-11-10 22:27:36,604 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 35 predicate places. [2024-11-10 22:27:36,604 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 175 transitions, 1062 flow [2024-11-10 22:27:36,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:36,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:36,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:36,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:27:36,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:36,805 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:36,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 32147920, now seen corresponding path program 1 times [2024-11-10 22:27:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227213078] [2024-11-10 22:27:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227213078] [2024-11-10 22:27:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227213078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:36,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:36,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298778919] [2024-11-10 22:27:36,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:36,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:36,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:36,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:27:36,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 175 transitions, 1062 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:36,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:36,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:27:36,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:37,272 INFO L124 PetriNetUnfolderBase]: 1416/2563 cut-off events. [2024-11-10 22:27:37,272 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2024-11-10 22:27:37,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5733 conditions, 2563 events. 1416/2563 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16224 event pairs, 407 based on Foata normal form. 32/2089 useless extension candidates. Maximal degree in co-relation 5685. Up to 1602 conditions per place. [2024-11-10 22:27:37,292 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 134 selfloop transitions, 2 changer transitions 2/188 dead transitions. [2024-11-10 22:27:37,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1370 flow [2024-11-10 22:27:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2024-11-10 22:27:37,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6185897435897436 [2024-11-10 22:27:37,294 INFO L175 Difference]: Start difference. First operand has 126 places, 175 transitions, 1062 flow. Second operand 3 states and 193 transitions. [2024-11-10 22:27:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1370 flow [2024-11-10 22:27:37,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 188 transitions, 1319 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:37,303 INFO L231 Difference]: Finished difference. Result has 125 places, 176 transitions, 1033 flow [2024-11-10 22:27:37,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1033, PETRI_PLACES=125, PETRI_TRANSITIONS=176} [2024-11-10 22:27:37,304 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2024-11-10 22:27:37,304 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 176 transitions, 1033 flow [2024-11-10 22:27:37,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:37,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:37,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:37,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:27:37,305 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:37,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 32147921, now seen corresponding path program 1 times [2024-11-10 22:27:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514453298] [2024-11-10 22:27:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:37,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514453298] [2024-11-10 22:27:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514453298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:37,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:37,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657938886] [2024-11-10 22:27:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:37,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:37,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:27:37,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 176 transitions, 1033 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:37,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:37,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:27:37,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:37,741 INFO L124 PetriNetUnfolderBase]: 1338/2410 cut-off events. [2024-11-10 22:27:37,742 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2024-11-10 22:27:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5921 conditions, 2410 events. 1338/2410 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 14889 event pairs, 338 based on Foata normal form. 39/2051 useless extension candidates. Maximal degree in co-relation 5878. Up to 1602 conditions per place. [2024-11-10 22:27:37,760 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 133 selfloop transitions, 2 changer transitions 2/187 dead transitions. [2024-11-10 22:27:37,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 187 transitions, 1335 flow [2024-11-10 22:27:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-10 22:27:37,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2024-11-10 22:27:37,761 INFO L175 Difference]: Start difference. First operand has 125 places, 176 transitions, 1033 flow. Second operand 3 states and 187 transitions. [2024-11-10 22:27:37,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 187 transitions, 1335 flow [2024-11-10 22:27:37,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 187 transitions, 1333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:37,769 INFO L231 Difference]: Finished difference. Result has 127 places, 176 transitions, 1039 flow [2024-11-10 22:27:37,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1039, PETRI_PLACES=127, PETRI_TRANSITIONS=176} [2024-11-10 22:27:37,771 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2024-11-10 22:27:37,771 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 176 transitions, 1039 flow [2024-11-10 22:27:37,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:37,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:37,772 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:37,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:27:37,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:37,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash -687629974, now seen corresponding path program 1 times [2024-11-10 22:27:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:37,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361210130] [2024-11-10 22:27:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:37,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:37,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:37,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361210130] [2024-11-10 22:27:37,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361210130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769998180] [2024-11-10 22:27:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:37,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:37,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:37,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:27:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:38,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:38,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:38,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769998180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:38,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:38,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:27:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347065453] [2024-11-10 22:27:38,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:38,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:38,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:27:38,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 176 transitions, 1039 flow. Second operand has 12 states, 12 states have (on average 43.5) internal successors, (522), 12 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:38,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:38,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:27:38,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:38,619 INFO L124 PetriNetUnfolderBase]: 1317/2460 cut-off events. [2024-11-10 22:27:38,619 INFO L125 PetriNetUnfolderBase]: For 1427/1445 co-relation queries the response was YES. [2024-11-10 22:27:38,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6043 conditions, 2460 events. 1317/2460 cut-off events. For 1427/1445 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15937 event pairs, 917 based on Foata normal form. 3/2002 useless extension candidates. Maximal degree in co-relation 5959. Up to 1968 conditions per place. [2024-11-10 22:27:38,636 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 111 selfloop transitions, 25 changer transitions 0/185 dead transitions. [2024-11-10 22:27:38,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 185 transitions, 1356 flow [2024-11-10 22:27:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 478 transitions. [2024-11-10 22:27:38,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4596153846153846 [2024-11-10 22:27:38,639 INFO L175 Difference]: Start difference. First operand has 127 places, 176 transitions, 1039 flow. Second operand 10 states and 478 transitions. [2024-11-10 22:27:38,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 185 transitions, 1356 flow [2024-11-10 22:27:38,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 185 transitions, 1352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:38,649 INFO L231 Difference]: Finished difference. Result has 137 places, 185 transitions, 1148 flow [2024-11-10 22:27:38,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1148, PETRI_PLACES=137, PETRI_TRANSITIONS=185} [2024-11-10 22:27:38,649 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 46 predicate places. [2024-11-10 22:27:38,650 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 185 transitions, 1148 flow [2024-11-10 22:27:38,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.5) internal successors, (522), 12 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:38,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:38,650 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:38,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:27:38,851 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,SelfDestructingSolverStorable10 [2024-11-10 22:27:38,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:38,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:38,852 INFO L85 PathProgramCache]: Analyzing trace with hash -87899465, now seen corresponding path program 1 times [2024-11-10 22:27:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185914873] [2024-11-10 22:27:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:38,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:38,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185914873] [2024-11-10 22:27:38,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185914873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931944468] [2024-11-10 22:27:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:38,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:38,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:38,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:27:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:39,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:39,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:39,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:39,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931944468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:39,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:39,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:27:39,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923560906] [2024-11-10 22:27:39,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:39,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:27:39,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:27:39,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 185 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:39,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:39,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:27:39,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:39,561 INFO L124 PetriNetUnfolderBase]: 1317/2458 cut-off events. [2024-11-10 22:27:39,561 INFO L125 PetriNetUnfolderBase]: For 1443/1461 co-relation queries the response was YES. [2024-11-10 22:27:39,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 2458 events. 1317/2458 cut-off events. For 1443/1461 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15946 event pairs, 917 based on Foata normal form. 2/1997 useless extension candidates. Maximal degree in co-relation 5978. Up to 1900 conditions per place. [2024-11-10 22:27:39,577 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 127 selfloop transitions, 24 changer transitions 0/199 dead transitions. [2024-11-10 22:27:39,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 199 transitions, 1562 flow [2024-11-10 22:27:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-11-10 22:27:39,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-11-10 22:27:39,580 INFO L175 Difference]: Start difference. First operand has 137 places, 185 transitions, 1148 flow. Second operand 6 states and 302 transitions. [2024-11-10 22:27:39,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 199 transitions, 1562 flow [2024-11-10 22:27:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 199 transitions, 1539 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:39,589 INFO L231 Difference]: Finished difference. Result has 139 places, 184 transitions, 1169 flow [2024-11-10 22:27:39,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1169, PETRI_PLACES=139, PETRI_TRANSITIONS=184} [2024-11-10 22:27:39,590 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2024-11-10 22:27:39,590 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 184 transitions, 1169 flow [2024-11-10 22:27:39,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:39,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:39,591 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:39,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:39,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:39,792 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:39,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1570085023, now seen corresponding path program 1 times [2024-11-10 22:27:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922724724] [2024-11-10 22:27:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:39,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:39,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:39,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922724724] [2024-11-10 22:27:39,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922724724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:39,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342387319] [2024-11-10 22:27:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:39,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:39,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:39,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:39,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:27:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:40,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:40,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:40,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342387319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:40,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:27:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393046686] [2024-11-10 22:27:40,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:40,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:40,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:27:40,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 184 transitions, 1169 flow. Second operand has 12 states, 12 states have (on average 43.833333333333336) internal successors, (526), 12 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:40,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:40,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:27:40,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:40,629 INFO L124 PetriNetUnfolderBase]: 1359/2716 cut-off events. [2024-11-10 22:27:40,629 INFO L125 PetriNetUnfolderBase]: For 2369/2387 co-relation queries the response was YES. [2024-11-10 22:27:40,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 2716 events. 1359/2716 cut-off events. For 2369/2387 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17596 event pairs, 917 based on Foata normal form. 6/2261 useless extension candidates. Maximal degree in co-relation 6855. Up to 1950 conditions per place. [2024-11-10 22:27:40,648 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 181 selfloop transitions, 42 changer transitions 0/271 dead transitions. [2024-11-10 22:27:40,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 271 transitions, 2340 flow [2024-11-10 22:27:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-11-10 22:27:40,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-11-10 22:27:40,651 INFO L175 Difference]: Start difference. First operand has 139 places, 184 transitions, 1169 flow. Second operand 10 states and 490 transitions. [2024-11-10 22:27:40,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 271 transitions, 2340 flow [2024-11-10 22:27:40,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 271 transitions, 2229 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:40,664 INFO L231 Difference]: Finished difference. Result has 147 places, 211 transitions, 1451 flow [2024-11-10 22:27:40,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1451, PETRI_PLACES=147, PETRI_TRANSITIONS=211} [2024-11-10 22:27:40,665 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2024-11-10 22:27:40,665 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 211 transitions, 1451 flow [2024-11-10 22:27:40,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.833333333333336) internal successors, (526), 12 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:40,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:40,666 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:27:40,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:27:40,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:40,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:40,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1455106336, now seen corresponding path program 1 times [2024-11-10 22:27:40,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127853706] [2024-11-10 22:27:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:41,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:41,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127853706] [2024-11-10 22:27:41,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127853706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:41,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432386725] [2024-11-10 22:27:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:41,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:41,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:41,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:27:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:41,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:27:41,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:41,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432386725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:41,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-10 22:27:41,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532923019] [2024-11-10 22:27:41,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:41,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:27:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:27:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:27:41,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-10 22:27:41,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 211 transitions, 1451 flow. Second operand has 28 states, 28 states have (on average 37.07142857142857) internal successors, (1038), 28 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:41,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:41,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-10 22:27:41,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:42,552 INFO L124 PetriNetUnfolderBase]: 1457/3304 cut-off events. [2024-11-10 22:27:42,552 INFO L125 PetriNetUnfolderBase]: For 7160/7178 co-relation queries the response was YES. [2024-11-10 22:27:42,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8926 conditions, 3304 events. 1457/3304 cut-off events. For 7160/7178 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21500 event pairs, 917 based on Foata normal form. 91/2934 useless extension candidates. Maximal degree in co-relation 8868. Up to 2060 conditions per place. [2024-11-10 22:27:42,571 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 70 selfloop transitions, 214 changer transitions 0/330 dead transitions. [2024-11-10 22:27:42,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 330 transitions, 3153 flow [2024-11-10 22:27:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:27:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:27:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1146 transitions. [2024-11-10 22:27:42,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4238165680473373 [2024-11-10 22:27:42,576 INFO L175 Difference]: Start difference. First operand has 147 places, 211 transitions, 1451 flow. Second operand 26 states and 1146 transitions. [2024-11-10 22:27:42,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 330 transitions, 3153 flow [2024-11-10 22:27:42,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 330 transitions, 3111 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:42,601 INFO L231 Difference]: Finished difference. Result has 177 places, 330 transitions, 3099 flow [2024-11-10 22:27:42,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3099, PETRI_PLACES=177, PETRI_TRANSITIONS=330} [2024-11-10 22:27:42,601 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2024-11-10 22:27:42,602 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 330 transitions, 3099 flow [2024-11-10 22:27:42,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 37.07142857142857) internal successors, (1038), 28 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:42,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:42,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:42,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:27:42,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 22:27:42,803 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:42,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2076226363, now seen corresponding path program 1 times [2024-11-10 22:27:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230326148] [2024-11-10 22:27:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230326148] [2024-11-10 22:27:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230326148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257799181] [2024-11-10 22:27:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:42,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:42,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:27:42,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 330 transitions, 3099 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:42,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:42,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:27:42,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:43,438 INFO L124 PetriNetUnfolderBase]: 1280/3021 cut-off events. [2024-11-10 22:27:43,438 INFO L125 PetriNetUnfolderBase]: For 9236/9251 co-relation queries the response was YES. [2024-11-10 22:27:43,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8925 conditions, 3021 events. 1280/3021 cut-off events. For 9236/9251 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19380 event pairs, 781 based on Foata normal form. 0/2673 useless extension candidates. Maximal degree in co-relation 8860. Up to 2156 conditions per place. [2024-11-10 22:27:43,454 INFO L140 encePairwiseOnDemand]: 102/104 looper letters, 279 selfloop transitions, 1 changer transitions 0/329 dead transitions. [2024-11-10 22:27:43,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 329 transitions, 3655 flow [2024-11-10 22:27:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-10 22:27:43,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-11-10 22:27:43,456 INFO L175 Difference]: Start difference. First operand has 177 places, 330 transitions, 3099 flow. Second operand 3 states and 174 transitions. [2024-11-10 22:27:43,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 329 transitions, 3655 flow [2024-11-10 22:27:43,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 329 transitions, 2967 flow, removed 226 selfloop flow, removed 13 redundant places. [2024-11-10 22:27:43,493 INFO L231 Difference]: Finished difference. Result has 165 places, 329 transitions, 2409 flow [2024-11-10 22:27:43,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2409, PETRI_PLACES=165, PETRI_TRANSITIONS=329} [2024-11-10 22:27:43,493 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 74 predicate places. [2024-11-10 22:27:43,494 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 329 transitions, 2409 flow [2024-11-10 22:27:43,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:43,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:43,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:43,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 22:27:43,494 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:43,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:43,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2076226365, now seen corresponding path program 1 times [2024-11-10 22:27:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804589463] [2024-11-10 22:27:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:43,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804589463] [2024-11-10 22:27:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804589463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:43,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347013905] [2024-11-10 22:27:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:43,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:43,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-10 22:27:43,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 329 transitions, 2409 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:43,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:43,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-10 22:27:43,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:44,263 INFO L124 PetriNetUnfolderBase]: 1566/4400 cut-off events. [2024-11-10 22:27:44,263 INFO L125 PetriNetUnfolderBase]: For 8490/8505 co-relation queries the response was YES. [2024-11-10 22:27:44,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12345 conditions, 4400 events. 1566/4400 cut-off events. For 8490/8505 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 32583 event pairs, 885 based on Foata normal form. 45/4071 useless extension candidates. Maximal degree in co-relation 12308. Up to 2335 conditions per place. [2024-11-10 22:27:44,282 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 526 selfloop transitions, 4 changer transitions 16/576 dead transitions. [2024-11-10 22:27:44,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 576 transitions, 5414 flow [2024-11-10 22:27:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2024-11-10 22:27:44,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-10 22:27:44,284 INFO L175 Difference]: Start difference. First operand has 165 places, 329 transitions, 2409 flow. Second operand 5 states and 280 transitions. [2024-11-10 22:27:44,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 576 transitions, 5414 flow [2024-11-10 22:27:44,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 576 transitions, 5413 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:44,337 INFO L231 Difference]: Finished difference. Result has 170 places, 330 transitions, 2428 flow [2024-11-10 22:27:44,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2428, PETRI_PLACES=170, PETRI_TRANSITIONS=330} [2024-11-10 22:27:44,338 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2024-11-10 22:27:44,338 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 330 transitions, 2428 flow [2024-11-10 22:27:44,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:44,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:44,339 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, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:44,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:27:44,339 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:44,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1738192343, now seen corresponding path program 1 times [2024-11-10 22:27:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:44,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892171485] [2024-11-10 22:27:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:44,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892171485] [2024-11-10 22:27:44,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892171485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:44,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:44,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:27:44,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594110269] [2024-11-10 22:27:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:44,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:44,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:27:44,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-10 22:27:44,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 330 transitions, 2428 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:44,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:44,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-10 22:27:44,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:45,405 INFO L124 PetriNetUnfolderBase]: 2116/6714 cut-off events. [2024-11-10 22:27:45,406 INFO L125 PetriNetUnfolderBase]: For 15371/15371 co-relation queries the response was YES. [2024-11-10 22:27:45,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19572 conditions, 6714 events. 2116/6714 cut-off events. For 15371/15371 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 56986 event pairs, 595 based on Foata normal form. 39/6351 useless extension candidates. Maximal degree in co-relation 19532. Up to 1896 conditions per place. [2024-11-10 22:27:45,432 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 401 selfloop transitions, 34 changer transitions 19/484 dead transitions. [2024-11-10 22:27:45,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 484 transitions, 4515 flow [2024-11-10 22:27:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 328 transitions. [2024-11-10 22:27:45,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-11-10 22:27:45,434 INFO L175 Difference]: Start difference. First operand has 170 places, 330 transitions, 2428 flow. Second operand 6 states and 328 transitions. [2024-11-10 22:27:45,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 484 transitions, 4515 flow [2024-11-10 22:27:45,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 484 transitions, 4513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:45,502 INFO L231 Difference]: Finished difference. Result has 176 places, 344 transitions, 2713 flow [2024-11-10 22:27:45,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2713, PETRI_PLACES=176, PETRI_TRANSITIONS=344} [2024-11-10 22:27:45,502 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2024-11-10 22:27:45,503 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 344 transitions, 2713 flow [2024-11-10 22:27:45,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:45,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:45,503 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:45,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:27:45,503 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:45,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1202706576, now seen corresponding path program 2 times [2024-11-10 22:27:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761169120] [2024-11-10 22:27:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:45,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:27:45,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:45,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761169120] [2024-11-10 22:27:45,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761169120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881164952] [2024-11-10 22:27:45,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:45,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:45,777 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:45,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:27:45,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:45,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:45,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:45,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-10 22:27:45,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-10 22:27:46,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881164952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:46,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2024-11-10 22:27:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141257213] [2024-11-10 22:27:46,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:46,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:46,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:46,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:46,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 104 [2024-11-10 22:27:46,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 344 transitions, 2713 flow. Second operand has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:46,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:46,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 104 [2024-11-10 22:27:46,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:47,860 INFO L124 PetriNetUnfolderBase]: 3576/10666 cut-off events. [2024-11-10 22:27:47,860 INFO L125 PetriNetUnfolderBase]: For 24929/24959 co-relation queries the response was YES. [2024-11-10 22:27:47,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31054 conditions, 10666 events. 3576/10666 cut-off events. For 24929/24959 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 98231 event pairs, 1958 based on Foata normal form. 8/9846 useless extension candidates. Maximal degree in co-relation 31011. Up to 4612 conditions per place. [2024-11-10 22:27:47,915 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 427 selfloop transitions, 82 changer transitions 0/534 dead transitions. [2024-11-10 22:27:47,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 534 transitions, 5250 flow [2024-11-10 22:27:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:27:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:27:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 564 transitions. [2024-11-10 22:27:47,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3389423076923077 [2024-11-10 22:27:47,918 INFO L175 Difference]: Start difference. First operand has 176 places, 344 transitions, 2713 flow. Second operand 16 states and 564 transitions. [2024-11-10 22:27:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 534 transitions, 5250 flow [2024-11-10 22:27:48,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 534 transitions, 5232 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-10 22:27:48,071 INFO L231 Difference]: Finished difference. Result has 184 places, 362 transitions, 3010 flow [2024-11-10 22:27:48,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3010, PETRI_PLACES=184, PETRI_TRANSITIONS=362} [2024-11-10 22:27:48,072 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2024-11-10 22:27:48,072 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 362 transitions, 3010 flow [2024-11-10 22:27:48,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:48,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:48,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:48,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:27:48,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:27:48,273 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:48,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:48,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1805618090, now seen corresponding path program 1 times [2024-11-10 22:27:48,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:48,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893105657] [2024-11-10 22:27:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:27:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893105657] [2024-11-10 22:27:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893105657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939867599] [2024-11-10 22:27:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:48,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:48,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 104 [2024-11-10 22:27:48,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 362 transitions, 3010 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:48,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:48,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 104 [2024-11-10 22:27:48,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:50,151 INFO L124 PetriNetUnfolderBase]: 4786/13311 cut-off events. [2024-11-10 22:27:50,151 INFO L125 PetriNetUnfolderBase]: For 28107/28155 co-relation queries the response was YES. [2024-11-10 22:27:50,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35730 conditions, 13311 events. 4786/13311 cut-off events. For 28107/28155 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 128611 event pairs, 3140 based on Foata normal form. 222/12305 useless extension candidates. Maximal degree in co-relation 35691. Up to 6395 conditions per place. [2024-11-10 22:27:50,215 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 352 selfloop transitions, 11 changer transitions 2/415 dead transitions. [2024-11-10 22:27:50,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 415 transitions, 4070 flow [2024-11-10 22:27:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2024-11-10 22:27:50,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-10 22:27:50,216 INFO L175 Difference]: Start difference. First operand has 184 places, 362 transitions, 3010 flow. Second operand 5 states and 285 transitions. [2024-11-10 22:27:50,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 415 transitions, 4070 flow [2024-11-10 22:27:50,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 415 transitions, 4050 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:50,478 INFO L231 Difference]: Finished difference. Result has 188 places, 363 transitions, 3033 flow [2024-11-10 22:27:50,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3033, PETRI_PLACES=188, PETRI_TRANSITIONS=363} [2024-11-10 22:27:50,479 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 97 predicate places. [2024-11-10 22:27:50,479 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 363 transitions, 3033 flow [2024-11-10 22:27:50,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:50,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:50,479 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:50,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 22:27:50,480 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:50,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1284362314, now seen corresponding path program 1 times [2024-11-10 22:27:50,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:50,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942708851] [2024-11-10 22:27:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:50,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 22:27:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942708851] [2024-11-10 22:27:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942708851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120035559] [2024-11-10 22:27:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:50,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:50,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:50,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:50,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:27:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:50,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:27:50,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 22:27:50,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 22:27:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120035559] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 22:27:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2024-11-10 22:27:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892190205] [2024-11-10 22:27:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:50,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:27:50,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-10 22:27:50,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 363 transitions, 3033 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:50,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:50,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-10 22:27:50,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:53,049 INFO L124 PetriNetUnfolderBase]: 4778/13295 cut-off events. [2024-11-10 22:27:53,049 INFO L125 PetriNetUnfolderBase]: For 26275/26305 co-relation queries the response was YES. [2024-11-10 22:27:53,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37346 conditions, 13295 events. 4778/13295 cut-off events. For 26275/26305 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 127628 event pairs, 3140 based on Foata normal form. 8/12085 useless extension candidates. Maximal degree in co-relation 37305. Up to 7646 conditions per place. [2024-11-10 22:27:53,110 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 340 selfloop transitions, 135 changer transitions 4/508 dead transitions. [2024-11-10 22:27:53,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 508 transitions, 5067 flow [2024-11-10 22:27:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-11-10 22:27:53,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2024-11-10 22:27:53,111 INFO L175 Difference]: Start difference. First operand has 188 places, 363 transitions, 3033 flow. Second operand 5 states and 274 transitions. [2024-11-10 22:27:53,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 508 transitions, 5067 flow [2024-11-10 22:27:53,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 508 transitions, 5045 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:53,250 INFO L231 Difference]: Finished difference. Result has 193 places, 433 transitions, 4274 flow [2024-11-10 22:27:53,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4274, PETRI_PLACES=193, PETRI_TRANSITIONS=433} [2024-11-10 22:27:53,251 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2024-11-10 22:27:53,251 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 433 transitions, 4274 flow [2024-11-10 22:27:53,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:53,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:53,251 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:53,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:27:53,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:53,452 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:53,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash 186387768, now seen corresponding path program 1 times [2024-11-10 22:27:53,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:53,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551673494] [2024-11-10 22:27:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:53,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:53,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551673494] [2024-11-10 22:27:53,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551673494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627751205] [2024-11-10 22:27:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:53,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:53,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:53,660 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:53,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:27:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:53,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:53,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:53,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627751205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:53,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:53,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2024-11-10 22:27:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470078536] [2024-11-10 22:27:53,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:53,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 22:27:53,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 22:27:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:27:54,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-10 22:27:54,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 433 transitions, 4274 flow. Second operand has 9 states, 9 states have (on average 36.888888888888886) internal successors, (332), 9 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:54,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:54,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-10 22:27:54,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:57,313 INFO L124 PetriNetUnfolderBase]: 7190/19698 cut-off events. [2024-11-10 22:27:57,313 INFO L125 PetriNetUnfolderBase]: For 46574/46598 co-relation queries the response was YES. [2024-11-10 22:27:57,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58177 conditions, 19698 events. 7190/19698 cut-off events. For 46574/46598 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 200959 event pairs, 3298 based on Foata normal form. 216/18240 useless extension candidates. Maximal degree in co-relation 58134. Up to 5729 conditions per place. [2024-11-10 22:27:57,411 INFO L140 encePairwiseOnDemand]: 90/104 looper letters, 557 selfloop transitions, 82 changer transitions 6/674 dead transitions. [2024-11-10 22:27:57,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 674 transitions, 7967 flow [2024-11-10 22:27:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:27:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:27:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 468 transitions. [2024-11-10 22:27:57,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-10 22:27:57,413 INFO L175 Difference]: Start difference. First operand has 193 places, 433 transitions, 4274 flow. Second operand 11 states and 468 transitions. [2024-11-10 22:27:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 674 transitions, 7967 flow [2024-11-10 22:27:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 674 transitions, 7918 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:57,788 INFO L231 Difference]: Finished difference. Result has 202 places, 469 transitions, 4984 flow [2024-11-10 22:27:57,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4984, PETRI_PLACES=202, PETRI_TRANSITIONS=469} [2024-11-10 22:27:57,789 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 111 predicate places. [2024-11-10 22:27:57,789 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 469 transitions, 4984 flow [2024-11-10 22:27:57,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.888888888888886) internal successors, (332), 9 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:57,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:57,790 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:57,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:27:57,990 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 [2024-11-10 22:27:57,990 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:27:57,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash 186387773, now seen corresponding path program 1 times [2024-11-10 22:27:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:57,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71652116] [2024-11-10 22:27:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:57,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:58,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71652116] [2024-11-10 22:27:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71652116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678477759] [2024-11-10 22:27:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:58,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:58,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:27:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 469 transitions, 4984 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:27:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:00,653 INFO L124 PetriNetUnfolderBase]: 4520/15189 cut-off events. [2024-11-10 22:28:00,653 INFO L125 PetriNetUnfolderBase]: For 65694/65742 co-relation queries the response was YES. [2024-11-10 22:28:00,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51123 conditions, 15189 events. 4520/15189 cut-off events. For 65694/65742 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 155647 event pairs, 2412 based on Foata normal form. 0/14201 useless extension candidates. Maximal degree in co-relation 51076. Up to 9288 conditions per place. [2024-11-10 22:28:00,732 INFO L140 encePairwiseOnDemand]: 102/104 looper letters, 403 selfloop transitions, 1 changer transitions 0/468 dead transitions. [2024-11-10 22:28:00,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 468 transitions, 5788 flow [2024-11-10 22:28:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-10 22:28:00,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 22:28:00,733 INFO L175 Difference]: Start difference. First operand has 202 places, 469 transitions, 4984 flow. Second operand 3 states and 169 transitions. [2024-11-10 22:28:00,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 468 transitions, 5788 flow [2024-11-10 22:28:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 468 transitions, 5770 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:01,053 INFO L231 Difference]: Finished difference. Result has 199 places, 468 transitions, 4964 flow [2024-11-10 22:28:01,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4962, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4964, PETRI_PLACES=199, PETRI_TRANSITIONS=468} [2024-11-10 22:28:01,053 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 108 predicate places. [2024-11-10 22:28:01,053 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 468 transitions, 4964 flow [2024-11-10 22:28:01,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:01,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:01,054 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:01,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 22:28:01,054 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:01,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash 186387767, now seen corresponding path program 1 times [2024-11-10 22:28:01,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:01,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611856272] [2024-11-10 22:28:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:01,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611856272] [2024-11-10 22:28:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611856272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355005401] [2024-11-10 22:28:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:01,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:01,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:01,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:28:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:01,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:28:01,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:01,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:01,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355005401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:01,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-10 22:28:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455732654] [2024-11-10 22:28:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:01,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:28:01,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:28:01,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 468 transitions, 4964 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:01,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:01,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:28:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:04,360 INFO L124 PetriNetUnfolderBase]: 5144/16259 cut-off events. [2024-11-10 22:28:04,360 INFO L125 PetriNetUnfolderBase]: For 66702/66702 co-relation queries the response was YES. [2024-11-10 22:28:04,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53460 conditions, 16259 events. 5144/16259 cut-off events. For 66702/66702 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 163994 event pairs, 968 based on Foata normal form. 312/15581 useless extension candidates. Maximal degree in co-relation 53412. Up to 6924 conditions per place. [2024-11-10 22:28:04,438 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 411 selfloop transitions, 6 changer transitions 0/481 dead transitions. [2024-11-10 22:28:04,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 481 transitions, 5834 flow [2024-11-10 22:28:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2024-11-10 22:28:04,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-10 22:28:04,439 INFO L175 Difference]: Start difference. First operand has 199 places, 468 transitions, 4964 flow. Second operand 4 states and 228 transitions. [2024-11-10 22:28:04,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 481 transitions, 5834 flow [2024-11-10 22:28:04,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 481 transitions, 5803 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:04,753 INFO L231 Difference]: Finished difference. Result has 199 places, 469 transitions, 4963 flow [2024-11-10 22:28:04,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4963, PETRI_PLACES=199, PETRI_TRANSITIONS=469} [2024-11-10 22:28:04,754 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 108 predicate places. [2024-11-10 22:28:04,754 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 469 transitions, 4963 flow [2024-11-10 22:28:04,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:04,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:04,755 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:04,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:04,955 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,SelfDestructingSolverStorable22 [2024-11-10 22:28:04,956 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:04,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 186387774, now seen corresponding path program 1 times [2024-11-10 22:28:04,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:04,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847264807] [2024-11-10 22:28:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847264807] [2024-11-10 22:28:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847264807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832785087] [2024-11-10 22:28:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:05,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:05,049 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) [2024-11-10 22:28:05,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:28:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:05,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:28:05,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:05,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:05,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832785087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:05,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:05,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-10 22:28:05,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66821376] [2024-11-10 22:28:05,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:05,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 22:28:05,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 22:28:05,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:28:05,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:28:05,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 469 transitions, 4963 flow. Second operand has 7 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:05,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:05,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:28:05,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:09,766 INFO L124 PetriNetUnfolderBase]: 10796/26943 cut-off events. [2024-11-10 22:28:09,766 INFO L125 PetriNetUnfolderBase]: For 80242/80242 co-relation queries the response was YES. [2024-11-10 22:28:09,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81453 conditions, 26943 events. 10796/26943 cut-off events. For 80242/80242 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 272618 event pairs, 1236 based on Foata normal form. 108/25225 useless extension candidates. Maximal degree in co-relation 81404. Up to 6532 conditions per place. [2024-11-10 22:28:09,946 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 452 selfloop transitions, 10 changer transitions 0/526 dead transitions. [2024-11-10 22:28:09,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 526 transitions, 6099 flow [2024-11-10 22:28:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 359 transitions. [2024-11-10 22:28:09,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753205128205128 [2024-11-10 22:28:09,948 INFO L175 Difference]: Start difference. First operand has 199 places, 469 transitions, 4963 flow. Second operand 6 states and 359 transitions. [2024-11-10 22:28:09,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 526 transitions, 6099 flow [2024-11-10 22:28:10,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 526 transitions, 6080 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:10,298 INFO L231 Difference]: Finished difference. Result has 207 places, 476 transitions, 5058 flow [2024-11-10 22:28:10,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5058, PETRI_PLACES=207, PETRI_TRANSITIONS=476} [2024-11-10 22:28:10,298 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2024-11-10 22:28:10,299 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 476 transitions, 5058 flow [2024-11-10 22:28:10,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:10,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:10,299 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:10,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 22:28:10,499 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,SelfDestructingSolverStorable23 [2024-11-10 22:28:10,500 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:10,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2002768997, now seen corresponding path program 2 times [2024-11-10 22:28:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205959652] [2024-11-10 22:28:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:10,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205959652] [2024-11-10 22:28:10,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205959652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:10,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815657507] [2024-11-10 22:28:10,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:10,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:10,708 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) [2024-11-10 22:28:10,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:28:10,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:10,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:10,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:28:10,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:28:10,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:28:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815657507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:11,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:11,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-10 22:28:11,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793049561] [2024-11-10 22:28:11,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:11,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:28:11,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:11,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:28:11,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:28:11,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:28:11,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 476 transitions, 5058 flow. Second operand has 15 states, 15 states have (on average 43.06666666666667) internal successors, (646), 15 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:11,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:11,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:28:11,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:16,325 INFO L124 PetriNetUnfolderBase]: 11002/28737 cut-off events. [2024-11-10 22:28:16,325 INFO L125 PetriNetUnfolderBase]: For 103644/103696 co-relation queries the response was YES. [2024-11-10 22:28:16,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91078 conditions, 28737 events. 11002/28737 cut-off events. For 103644/103696 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 298895 event pairs, 6712 based on Foata normal form. 36/26933 useless extension candidates. Maximal degree in co-relation 91024. Up to 14558 conditions per place. [2024-11-10 22:28:16,551 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 558 selfloop transitions, 205 changer transitions 0/824 dead transitions. [2024-11-10 22:28:16,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 824 transitions, 10437 flow [2024-11-10 22:28:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:28:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:28:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 691 transitions. [2024-11-10 22:28:16,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44294871794871793 [2024-11-10 22:28:16,553 INFO L175 Difference]: Start difference. First operand has 207 places, 476 transitions, 5058 flow. Second operand 15 states and 691 transitions. [2024-11-10 22:28:16,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 824 transitions, 10437 flow [2024-11-10 22:28:17,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 824 transitions, 10305 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 22:28:17,130 INFO L231 Difference]: Finished difference. Result has 217 places, 514 transitions, 5878 flow [2024-11-10 22:28:17,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4918, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5878, PETRI_PLACES=217, PETRI_TRANSITIONS=514} [2024-11-10 22:28:17,131 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 126 predicate places. [2024-11-10 22:28:17,131 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 514 transitions, 5878 flow [2024-11-10 22:28:17,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.06666666666667) internal successors, (646), 15 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:17,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:17,131 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 12, 1, 1, 1, 1, 1] [2024-11-10 22:28:17,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 22:28:17,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:17,332 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:17,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1859574466, now seen corresponding path program 2 times [2024-11-10 22:28:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052872957] [2024-11-10 22:28:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:17,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:17,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:17,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052872957] [2024-11-10 22:28:17,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052872957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:17,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374399833] [2024-11-10 22:28:17,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:17,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:17,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:17,917 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) [2024-11-10 22:28:17,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 22:28:18,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:18,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:18,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:18,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-10 22:28:18,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-10 22:28:18,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374399833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:18,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:18,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-11-10 22:28:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59013473] [2024-11-10 22:28:18,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:18,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 22:28:18,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 22:28:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-10 22:28:18,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-10 22:28:18,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 514 transitions, 5878 flow. Second operand has 31 states, 31 states have (on average 33.16129032258065) internal successors, (1028), 31 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:18,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:18,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-10 22:28:18,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:24,729 INFO L124 PetriNetUnfolderBase]: 11119/29437 cut-off events. [2024-11-10 22:28:24,730 INFO L125 PetriNetUnfolderBase]: For 118310/118362 co-relation queries the response was YES. [2024-11-10 22:28:24,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96969 conditions, 29437 events. 11119/29437 cut-off events. For 118310/118362 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 307163 event pairs, 6712 based on Foata normal form. 118/27715 useless extension candidates. Maximal degree in co-relation 96916. Up to 16480 conditions per place. [2024-11-10 22:28:25,066 INFO L140 encePairwiseOnDemand]: 85/104 looper letters, 115 selfloop transitions, 449 changer transitions 0/592 dead transitions. [2024-11-10 22:28:25,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 592 transitions, 7646 flow [2024-11-10 22:28:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-10 22:28:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-10 22:28:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 2077 transitions. [2024-11-10 22:28:25,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35037112010796223 [2024-11-10 22:28:25,071 INFO L175 Difference]: Start difference. First operand has 217 places, 514 transitions, 5878 flow. Second operand 57 states and 2077 transitions. [2024-11-10 22:28:25,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 592 transitions, 7646 flow [2024-11-10 22:28:25,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 592 transitions, 7126 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-11-10 22:28:25,314 INFO L231 Difference]: Finished difference. Result has 266 places, 572 transitions, 6863 flow [2024-11-10 22:28:25,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=5362, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=6863, PETRI_PLACES=266, PETRI_TRANSITIONS=572} [2024-11-10 22:28:25,315 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 175 predicate places. [2024-11-10 22:28:25,315 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 572 transitions, 6863 flow [2024-11-10 22:28:25,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 33.16129032258065) internal successors, (1028), 31 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:25,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:25,316 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:25,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 22:28:25,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 22:28:25,517 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-10 22:28:25,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1535083100, now seen corresponding path program 2 times [2024-11-10 22:28:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524866940] [2024-11-10 22:28:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:25,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524866940] [2024-11-10 22:28:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524866940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558460200] [2024-11-10 22:28:25,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:25,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:25,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:25,716 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) [2024-11-10 22:28:25,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 22:28:25,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:28:25,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:25,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:28:25,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:26,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:26,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558460200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:26,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:26,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:28:26,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884467260] [2024-11-10 22:28:26,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:26,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 22:28:26,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 22:28:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 22:28:26,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-10 22:28:26,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 572 transitions, 6863 flow. Second operand has 13 states, 13 states have (on average 49.53846153846154) internal successors, (644), 13 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:26,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:26,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-10 22:28:26,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand