./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 3289d67d 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-3289d67-m [2024-11-17 07:56:41,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:56:41,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:56:41,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:56:41,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:56:41,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:56:41,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:56:41,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:56:41,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:56:41,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:56:41,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:56:41,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:56:41,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:56:41,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:56:41,944 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:56:41,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:56:41,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:56:41,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:56:41,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:56:41,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:56:41,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:56:41,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:56:41,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:56:41,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:56:41,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:56:41,949 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:56:41,949 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:56:41,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:56:41,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:56:41,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:56:41,950 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:56:41,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:56:41,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:56:41,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:56:41,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:56:41,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:56:41,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:56:41,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:56:41,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:56:41,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:56:41,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:56:41,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:56:41,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:56:41,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:56:41,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-17 07:56:42,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:56:42,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:56:42,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:56:42,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:56:42,166 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:56:42,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-17 07:56:43,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:56:43,496 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:56:43,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-17 07:56:43,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f356e0/de83ad1775834067bd95e63e705caca1/FLAGef3f81294 [2024-11-17 07:56:43,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f356e0/de83ad1775834067bd95e63e705caca1 [2024-11-17 07:56:43,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:56:43,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:56:43,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:56:43,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:56:43,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:56:43,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:56:43" (1/1) ... [2024-11-17 07:56:43,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16cc2be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:43, skipping insertion in model container [2024-11-17 07:56:43,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:56:43" (1/1) ... [2024-11-17 07:56:43,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:56:44,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:56:44,110 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:56:44,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:56:44,166 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:56:44,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44 WrapperNode [2024-11-17 07:56:44,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:56:44,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:56:44,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:56:44,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:56:44,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,203 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 426 [2024-11-17 07:56:44,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:56:44,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:56:44,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:56:44,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:56:44,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,243 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]. [2024-11-17 07:56:44,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,256 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:56:44,272 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:56:44,276 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:56:44,276 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:56:44,277 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (1/1) ... [2024-11-17 07:56:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:56:44,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:44,308 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) [2024-11-17 07:56:44,310 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 [2024-11-17 07:56:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:56:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 07:56:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 07:56:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 07:56:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 07:56:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 07:56:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:56:44,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:56:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:56:44,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:56:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:56:44,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:56:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:56:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:56:44,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:56:44,351 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:56:44,456 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:56:44,458 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:56:44,922 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:56:44,923 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:56:45,321 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:56:45,322 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:56:45,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:56:45 BoogieIcfgContainer [2024-11-17 07:56:45,322 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:56:45,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:56:45,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:56:45,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:56:45,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:56:43" (1/3) ... [2024-11-17 07:56:45,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af27eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:56:45, skipping insertion in model container [2024-11-17 07:56:45,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:44" (2/3) ... [2024-11-17 07:56:45,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af27eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:56:45, skipping insertion in model container [2024-11-17 07:56:45,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:56:45" (3/3) ... [2024-11-17 07:56:45,329 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-17 07:56:45,342 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:56:45,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-17 07:56:45,342 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:56:45,414 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:56:45,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 104 transitions, 229 flow [2024-11-17 07:56:45,480 INFO L124 PetriNetUnfolderBase]: 18/101 cut-off events. [2024-11-17 07:56:45,481 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:56:45,484 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. [2024-11-17 07:56:45,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 104 transitions, 229 flow [2024-11-17 07:56:45,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 99 transitions, 213 flow [2024-11-17 07:56:45,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:56:45,503 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;@697d7e68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:56:45,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-17 07:56:45,508 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:56:45,508 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:56:45,508 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:56:45,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:45,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:56:45,509 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:45,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:45,513 INFO L85 PathProgramCache]: Analyzing trace with hash 37440832, now seen corresponding path program 1 times [2024-11-17 07:56:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:45,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152915316] [2024-11-17 07:56:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152915316] [2024-11-17 07:56:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152915316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:45,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708440530] [2024-11-17 07:56:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:45,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:45,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-17 07:56:45,859 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) [2024-11-17 07:56:45,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:45,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-17 07:56:45,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:46,315 INFO L124 PetriNetUnfolderBase]: 1285/2177 cut-off events. [2024-11-17 07:56:46,315 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-17 07:56:46,319 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. [2024-11-17 07:56:46,328 INFO L140 encePairwiseOnDemand]: 67/104 looper letters, 48 selfloop transitions, 14 changer transitions 1/96 dead transitions. [2024-11-17 07:56:46,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 333 flow [2024-11-17 07:56:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-17 07:56:46,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-17 07:56:46,339 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 213 flow. Second operand 4 states and 234 transitions. [2024-11-17 07:56:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 333 flow [2024-11-17 07:56:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:56:46,348 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 291 flow [2024-11-17 07:56:46,349 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} [2024-11-17 07:56:46,352 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-17 07:56:46,353 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 291 flow [2024-11-17 07:56:46,353 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) [2024-11-17 07:56:46,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:46,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:56:46,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:56:46,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:46,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1352688474, now seen corresponding path program 1 times [2024-11-17 07:56:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749731512] [2024-11-17 07:56:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749731512] [2024-11-17 07:56:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749731512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673455710] [2024-11-17 07:56:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:46,482 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) [2024-11-17 07:56:46,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:56:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:46,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:46,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:46,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673455710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:46,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:46,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:56:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394778886] [2024-11-17 07:56:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:46,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:46,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:56:46,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-17 07:56:46,674 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) [2024-11-17 07:56:46,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:46,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-17 07:56:46,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:47,019 INFO L124 PetriNetUnfolderBase]: 1281/2166 cut-off events. [2024-11-17 07:56:47,019 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-17 07:56:47,022 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. [2024-11-17 07:56:47,029 INFO L140 encePairwiseOnDemand]: 86/104 looper letters, 34 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2024-11-17 07:56:47,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 391 flow [2024-11-17 07:56:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-11-17 07:56:47,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-11-17 07:56:47,031 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 291 flow. Second operand 6 states and 278 transitions. [2024-11-17 07:56:47,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 391 flow [2024-11-17 07:56:47,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:56:47,034 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 323 flow [2024-11-17 07:56:47,034 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} [2024-11-17 07:56:47,035 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-17 07:56:47,035 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 323 flow [2024-11-17 07:56:47,035 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) [2024-11-17 07:56:47,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:47,035 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:56:47,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:47,236 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 [2024-11-17 07:56:47,237 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:47,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1016331381, now seen corresponding path program 1 times [2024-11-17 07:56:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712411180] [2024-11-17 07:56:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:47,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:47,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712411180] [2024-11-17 07:56:47,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712411180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825429704] [2024-11-17 07:56:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:47,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:47,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:47,323 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) [2024-11-17 07:56:47,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:56:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:47,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:47,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:47,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:47,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825429704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:47,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:47,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:56:47,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373332598] [2024-11-17 07:56:47,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:47,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:47,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-17 07:56:47,532 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) [2024-11-17 07:56:47,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:47,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-17 07:56:47,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:47,941 INFO L124 PetriNetUnfolderBase]: 1293/2238 cut-off events. [2024-11-17 07:56:47,941 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-17 07:56:47,944 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. [2024-11-17 07:56:47,950 INFO L140 encePairwiseOnDemand]: 86/104 looper letters, 44 selfloop transitions, 50 changer transitions 0/127 dead transitions. [2024-11-17 07:56:47,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 739 flow [2024-11-17 07:56:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:56:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:56:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 466 transitions. [2024-11-17 07:56:47,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4480769230769231 [2024-11-17 07:56:47,952 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 323 flow. Second operand 10 states and 466 transitions. [2024-11-17 07:56:47,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 739 flow [2024-11-17 07:56:47,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 127 transitions, 623 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-17 07:56:47,956 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 603 flow [2024-11-17 07:56:47,956 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} [2024-11-17 07:56:47,957 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2024-11-17 07:56:47,957 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 603 flow [2024-11-17 07:56:47,957 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) [2024-11-17 07:56:47,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:47,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:47,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:48,161 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 [2024-11-17 07:56:48,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:48,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 469556317, now seen corresponding path program 1 times [2024-11-17 07:56:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:48,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475603318] [2024-11-17 07:56:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:48,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:48,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:48,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475603318] [2024-11-17 07:56:48,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475603318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:48,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:48,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937892020] [2024-11-17 07:56:48,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:48,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:48,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:56:48,229 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) [2024-11-17 07:56:48,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:48,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:56:48,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:48,479 INFO L124 PetriNetUnfolderBase]: 1294/2244 cut-off events. [2024-11-17 07:56:48,479 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2024-11-17 07:56:48,482 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. [2024-11-17 07:56:48,488 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 87 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2024-11-17 07:56:48,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 799 flow [2024-11-17 07:56:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-17 07:56:48,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5216346153846154 [2024-11-17 07:56:48,490 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 603 flow. Second operand 4 states and 217 transitions. [2024-11-17 07:56:48,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 799 flow [2024-11-17 07:56:48,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 751 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:48,493 INFO L231 Difference]: Finished difference. Result has 96 places, 130 transitions, 596 flow [2024-11-17 07:56:48,494 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} [2024-11-17 07:56:48,494 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-17 07:56:48,494 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 130 transitions, 596 flow [2024-11-17 07:56:48,494 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) [2024-11-17 07:56:48,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:48,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:48,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:56:48,495 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:48,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -515346661, now seen corresponding path program 1 times [2024-11-17 07:56:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:48,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887939544] [2024-11-17 07:56:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 07:56:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887939544] [2024-11-17 07:56:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887939544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:48,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:48,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:56:48,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726985904] [2024-11-17 07:56:48,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:48,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:56:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:56:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:56:48,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-17 07:56:48,598 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) [2024-11-17 07:56:48,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:48,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-17 07:56:48,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:48,985 INFO L124 PetriNetUnfolderBase]: 1803/3252 cut-off events. [2024-11-17 07:56:48,986 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-17 07:56:48,990 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. [2024-11-17 07:56:48,999 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 139 selfloop transitions, 17 changer transitions 0/189 dead transitions. [2024-11-17 07:56:48,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 189 transitions, 1178 flow [2024-11-17 07:56:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-11-17 07:56:49,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5336538461538461 [2024-11-17 07:56:49,001 INFO L175 Difference]: Start difference. First operand has 96 places, 130 transitions, 596 flow. Second operand 6 states and 333 transitions. [2024-11-17 07:56:49,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 189 transitions, 1178 flow [2024-11-17 07:56:49,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 189 transitions, 1165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:49,005 INFO L231 Difference]: Finished difference. Result has 104 places, 141 transitions, 744 flow [2024-11-17 07:56:49,005 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} [2024-11-17 07:56:49,005 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-17 07:56:49,006 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 141 transitions, 744 flow [2024-11-17 07:56:49,006 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) [2024-11-17 07:56:49,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:49,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:49,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:56:49,006 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:49,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1984235323, now seen corresponding path program 1 times [2024-11-17 07:56:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665830166] [2024-11-17 07:56:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:49,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:49,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665830166] [2024-11-17 07:56:49,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665830166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:49,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585613432] [2024-11-17 07:56:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:49,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:49,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:56:49,066 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) [2024-11-17 07:56:49,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:49,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:56:49,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:49,440 INFO L124 PetriNetUnfolderBase]: 1815/3326 cut-off events. [2024-11-17 07:56:49,440 INFO L125 PetriNetUnfolderBase]: For 936/954 co-relation queries the response was YES. [2024-11-17 07:56:49,445 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. [2024-11-17 07:56:49,454 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 115 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-11-17 07:56:49,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 162 transitions, 1133 flow [2024-11-17 07:56:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-17 07:56:49,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-11-17 07:56:49,456 INFO L175 Difference]: Start difference. First operand has 104 places, 141 transitions, 744 flow. Second operand 4 states and 220 transitions. [2024-11-17 07:56:49,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 162 transitions, 1133 flow [2024-11-17 07:56:49,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 162 transitions, 1127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:49,464 INFO L231 Difference]: Finished difference. Result has 108 places, 149 transitions, 837 flow [2024-11-17 07:56:49,464 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} [2024-11-17 07:56:49,464 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 17 predicate places. [2024-11-17 07:56:49,465 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 149 transitions, 837 flow [2024-11-17 07:56:49,465 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) [2024-11-17 07:56:49,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:49,465 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:56:49,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:56:49,465 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:49,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1169070461, now seen corresponding path program 2 times [2024-11-17 07:56:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533285488] [2024-11-17 07:56:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:49,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:49,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533285488] [2024-11-17 07:56:49,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533285488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:49,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983802035] [2024-11-17 07:56:49,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:49,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:49,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:49,607 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) [2024-11-17 07:56:49,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:56:49,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:49,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:49,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:49,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:49,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:49,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983802035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:49,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:49,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:56:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796352051] [2024-11-17 07:56:49,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:49,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:56:49,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:56:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:56:49,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-17 07:56:49,828 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) [2024-11-17 07:56:49,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:49,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-17 07:56:49,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:50,456 INFO L124 PetriNetUnfolderBase]: 1823/3373 cut-off events. [2024-11-17 07:56:50,456 INFO L125 PetriNetUnfolderBase]: For 1140/1158 co-relation queries the response was YES. [2024-11-17 07:56:50,461 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. [2024-11-17 07:56:50,469 INFO L140 encePairwiseOnDemand]: 83/104 looper letters, 56 selfloop transitions, 96 changer transitions 0/181 dead transitions. [2024-11-17 07:56:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 181 transitions, 1283 flow [2024-11-17 07:56:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:56:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:56:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 902 transitions. [2024-11-17 07:56:50,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3613782051282051 [2024-11-17 07:56:50,472 INFO L175 Difference]: Start difference. First operand has 108 places, 149 transitions, 837 flow. Second operand 24 states and 902 transitions. [2024-11-17 07:56:50,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 181 transitions, 1283 flow [2024-11-17 07:56:50,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 181 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:50,478 INFO L231 Difference]: Finished difference. Result has 132 places, 176 transitions, 1214 flow [2024-11-17 07:56:50,478 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} [2024-11-17 07:56:50,478 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2024-11-17 07:56:50,479 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 176 transitions, 1214 flow [2024-11-17 07:56:50,479 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) [2024-11-17 07:56:50,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:50,479 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:50,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:50,679 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 [2024-11-17 07:56:50,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:50,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash -299276311, now seen corresponding path program 1 times [2024-11-17 07:56:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687255324] [2024-11-17 07:56:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687255324] [2024-11-17 07:56:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687255324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560260998] [2024-11-17 07:56:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:50,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:50,765 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) [2024-11-17 07:56:50,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:56:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:50,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:50,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:50,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560260998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:50,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:56:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823690190] [2024-11-17 07:56:50,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:50,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:56:50,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:56:50,895 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) [2024-11-17 07:56:50,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:50,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:56:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:51,324 INFO L124 PetriNetUnfolderBase]: 1823/3372 cut-off events. [2024-11-17 07:56:51,325 INFO L125 PetriNetUnfolderBase]: For 1682/1700 co-relation queries the response was YES. [2024-11-17 07:56:51,331 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. [2024-11-17 07:56:51,340 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 107 selfloop transitions, 19 changer transitions 0/175 dead transitions. [2024-11-17 07:56:51,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 175 transitions, 1462 flow [2024-11-17 07:56:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2024-11-17 07:56:51,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-17 07:56:51,342 INFO L175 Difference]: Start difference. First operand has 132 places, 176 transitions, 1214 flow. Second operand 6 states and 299 transitions. [2024-11-17 07:56:51,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 175 transitions, 1462 flow [2024-11-17 07:56:51,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 175 transitions, 1276 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-11-17 07:56:51,348 INFO L231 Difference]: Finished difference. Result has 126 places, 175 transitions, 1062 flow [2024-11-17 07:56:51,349 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} [2024-11-17 07:56:51,349 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 35 predicate places. [2024-11-17 07:56:51,349 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 175 transitions, 1062 flow [2024-11-17 07:56:51,349 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) [2024-11-17 07:56:51,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:51,349 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] [2024-11-17 07:56:51,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:56:51,550 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 [2024-11-17 07:56:51,550 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:51,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:51,550 INFO L85 PathProgramCache]: Analyzing trace with hash 32147920, now seen corresponding path program 1 times [2024-11-17 07:56:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:51,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520631649] [2024-11-17 07:56:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:51,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520631649] [2024-11-17 07:56:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520631649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:51,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:56:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408873080] [2024-11-17 07:56:51,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:51,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:51,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:51,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:56:51,598 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) [2024-11-17 07:56:51,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:51,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:56:51,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:51,874 INFO L124 PetriNetUnfolderBase]: 1416/2563 cut-off events. [2024-11-17 07:56:51,874 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2024-11-17 07:56:51,879 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. [2024-11-17 07:56:51,885 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 134 selfloop transitions, 2 changer transitions 2/188 dead transitions. [2024-11-17 07:56:51,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1370 flow [2024-11-17 07:56:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2024-11-17 07:56:51,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6185897435897436 [2024-11-17 07:56:51,886 INFO L175 Difference]: Start difference. First operand has 126 places, 175 transitions, 1062 flow. Second operand 3 states and 193 transitions. [2024-11-17 07:56:51,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1370 flow [2024-11-17 07:56:51,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 188 transitions, 1319 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-17 07:56:51,891 INFO L231 Difference]: Finished difference. Result has 125 places, 176 transitions, 1033 flow [2024-11-17 07:56:51,891 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} [2024-11-17 07:56:51,892 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2024-11-17 07:56:51,892 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 176 transitions, 1033 flow [2024-11-17 07:56:51,892 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) [2024-11-17 07:56:51,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:51,892 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] [2024-11-17 07:56:51,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:56:51,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 32147921, now seen corresponding path program 1 times [2024-11-17 07:56:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669106297] [2024-11-17 07:56:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669106297] [2024-11-17 07:56:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669106297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:56:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320466476] [2024-11-17 07:56:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:51,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:51,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:56:51,932 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) [2024-11-17 07:56:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:51,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:56:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:52,222 INFO L124 PetriNetUnfolderBase]: 1338/2410 cut-off events. [2024-11-17 07:56:52,223 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2024-11-17 07:56:52,228 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. [2024-11-17 07:56:52,234 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 133 selfloop transitions, 2 changer transitions 2/187 dead transitions. [2024-11-17 07:56:52,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 187 transitions, 1335 flow [2024-11-17 07:56:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-17 07:56:52,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2024-11-17 07:56:52,235 INFO L175 Difference]: Start difference. First operand has 125 places, 176 transitions, 1033 flow. Second operand 3 states and 187 transitions. [2024-11-17 07:56:52,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 187 transitions, 1335 flow [2024-11-17 07:56:52,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 187 transitions, 1333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:52,242 INFO L231 Difference]: Finished difference. Result has 127 places, 176 transitions, 1039 flow [2024-11-17 07:56:52,243 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} [2024-11-17 07:56:52,243 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2024-11-17 07:56:52,243 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 176 transitions, 1039 flow [2024-11-17 07:56:52,243 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) [2024-11-17 07:56:52,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:52,244 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:52,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:56:52,244 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:52,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash -687629974, now seen corresponding path program 1 times [2024-11-17 07:56:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735549842] [2024-11-17 07:56:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:52,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735549842] [2024-11-17 07:56:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735549842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121955258] [2024-11-17 07:56:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:52,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:52,324 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) [2024-11-17 07:56:52,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:56:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:52,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:52,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:52,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:52,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121955258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:52,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:52,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:56:52,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725138003] [2024-11-17 07:56:52,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:52,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:52,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:56:52,510 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) [2024-11-17 07:56:52,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:52,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:56:52,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:52,881 INFO L124 PetriNetUnfolderBase]: 1317/2460 cut-off events. [2024-11-17 07:56:52,881 INFO L125 PetriNetUnfolderBase]: For 1427/1445 co-relation queries the response was YES. [2024-11-17 07:56:52,885 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. [2024-11-17 07:56:52,891 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 111 selfloop transitions, 25 changer transitions 0/185 dead transitions. [2024-11-17 07:56:52,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 185 transitions, 1356 flow [2024-11-17 07:56:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:56:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:56:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 478 transitions. [2024-11-17 07:56:52,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4596153846153846 [2024-11-17 07:56:52,893 INFO L175 Difference]: Start difference. First operand has 127 places, 176 transitions, 1039 flow. Second operand 10 states and 478 transitions. [2024-11-17 07:56:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 185 transitions, 1356 flow [2024-11-17 07:56:52,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 185 transitions, 1352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:52,901 INFO L231 Difference]: Finished difference. Result has 137 places, 185 transitions, 1148 flow [2024-11-17 07:56:52,902 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} [2024-11-17 07:56:52,902 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 46 predicate places. [2024-11-17 07:56:52,902 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 185 transitions, 1148 flow [2024-11-17 07:56:52,902 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) [2024-11-17 07:56:52,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:52,902 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] [2024-11-17 07:56:52,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:56:53,103 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 [2024-11-17 07:56:53,103 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:53,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash -87899465, now seen corresponding path program 1 times [2024-11-17 07:56:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:53,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218204178] [2024-11-17 07:56:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:53,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:53,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:53,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218204178] [2024-11-17 07:56:53,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218204178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:53,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647198990] [2024-11-17 07:56:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:53,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:53,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:53,177 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) [2024-11-17 07:56:53,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:56:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:53,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:53,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:53,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647198990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:53,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:56:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890239464] [2024-11-17 07:56:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:53,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:53,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:56:53,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:56:53,318 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) [2024-11-17 07:56:53,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:53,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:56:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:53,683 INFO L124 PetriNetUnfolderBase]: 1317/2458 cut-off events. [2024-11-17 07:56:53,683 INFO L125 PetriNetUnfolderBase]: For 1443/1461 co-relation queries the response was YES. [2024-11-17 07:56:53,688 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. [2024-11-17 07:56:53,693 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 127 selfloop transitions, 24 changer transitions 0/199 dead transitions. [2024-11-17 07:56:53,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 199 transitions, 1562 flow [2024-11-17 07:56:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-11-17 07:56:53,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-11-17 07:56:53,695 INFO L175 Difference]: Start difference. First operand has 137 places, 185 transitions, 1148 flow. Second operand 6 states and 302 transitions. [2024-11-17 07:56:53,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 199 transitions, 1562 flow [2024-11-17 07:56:53,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 199 transitions, 1539 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:53,701 INFO L231 Difference]: Finished difference. Result has 139 places, 184 transitions, 1169 flow [2024-11-17 07:56:53,701 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} [2024-11-17 07:56:53,701 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2024-11-17 07:56:53,702 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 184 transitions, 1169 flow [2024-11-17 07:56:53,702 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) [2024-11-17 07:56:53,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:53,702 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] [2024-11-17 07:56:53,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:53,902 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 [2024-11-17 07:56:53,903 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:53,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1570085023, now seen corresponding path program 1 times [2024-11-17 07:56:53,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:53,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420909618] [2024-11-17 07:56:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:53,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420909618] [2024-11-17 07:56:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420909618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555259019] [2024-11-17 07:56:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:53,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:53,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:53,983 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) [2024-11-17 07:56:53,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:56:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:54,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:54,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:54,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555259019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:54,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:54,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:56:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505249427] [2024-11-17 07:56:54,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:54,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:54,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:56:54,175 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) [2024-11-17 07:56:54,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:54,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:56:54,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:54,550 INFO L124 PetriNetUnfolderBase]: 1359/2716 cut-off events. [2024-11-17 07:56:54,551 INFO L125 PetriNetUnfolderBase]: For 2369/2387 co-relation queries the response was YES. [2024-11-17 07:56:54,556 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. [2024-11-17 07:56:54,561 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 181 selfloop transitions, 42 changer transitions 0/271 dead transitions. [2024-11-17 07:56:54,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 271 transitions, 2340 flow [2024-11-17 07:56:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:56:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:56:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-11-17 07:56:54,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-11-17 07:56:54,563 INFO L175 Difference]: Start difference. First operand has 139 places, 184 transitions, 1169 flow. Second operand 10 states and 490 transitions. [2024-11-17 07:56:54,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 271 transitions, 2340 flow [2024-11-17 07:56:54,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 271 transitions, 2229 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-17 07:56:54,571 INFO L231 Difference]: Finished difference. Result has 147 places, 211 transitions, 1451 flow [2024-11-17 07:56:54,572 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} [2024-11-17 07:56:54,572 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2024-11-17 07:56:54,572 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 211 transitions, 1451 flow [2024-11-17 07:56:54,572 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) [2024-11-17 07:56:54,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:54,572 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-17 07:56:54,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:56:54,773 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 [2024-11-17 07:56:54,773 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:54,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1455106336, now seen corresponding path program 1 times [2024-11-17 07:56:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:54,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342586566] [2024-11-17 07:56:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:54,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342586566] [2024-11-17 07:56:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342586566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370378363] [2024-11-17 07:56:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:54,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:54,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:54,927 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) [2024-11-17 07:56:54,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:56:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:55,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 07:56:55,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:55,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370378363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:55,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:55,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-17 07:56:55,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215498482] [2024-11-17 07:56:55,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:55,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:56:55,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:56:55,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:56:55,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2024-11-17 07:56:55,320 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) [2024-11-17 07:56:55,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:55,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2024-11-17 07:56:55,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:56,008 INFO L124 PetriNetUnfolderBase]: 1457/3304 cut-off events. [2024-11-17 07:56:56,008 INFO L125 PetriNetUnfolderBase]: For 7160/7178 co-relation queries the response was YES. [2024-11-17 07:56:56,015 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. [2024-11-17 07:56:56,021 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 70 selfloop transitions, 214 changer transitions 0/330 dead transitions. [2024-11-17 07:56:56,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 330 transitions, 3153 flow [2024-11-17 07:56:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 07:56:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-17 07:56:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1146 transitions. [2024-11-17 07:56:56,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4238165680473373 [2024-11-17 07:56:56,025 INFO L175 Difference]: Start difference. First operand has 147 places, 211 transitions, 1451 flow. Second operand 26 states and 1146 transitions. [2024-11-17 07:56:56,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 330 transitions, 3153 flow [2024-11-17 07:56:56,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 330 transitions, 3111 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:56,040 INFO L231 Difference]: Finished difference. Result has 177 places, 330 transitions, 3099 flow [2024-11-17 07:56:56,040 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} [2024-11-17 07:56:56,040 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2024-11-17 07:56:56,041 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 330 transitions, 3099 flow [2024-11-17 07:56:56,041 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) [2024-11-17 07:56:56,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:56,041 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] [2024-11-17 07:56:56,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:56:56,242 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 [2024-11-17 07:56:56,242 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:56,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2076226363, now seen corresponding path program 1 times [2024-11-17 07:56:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819177758] [2024-11-17 07:56:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:56,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819177758] [2024-11-17 07:56:56,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819177758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:56,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:56,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654380886] [2024-11-17 07:56:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:56,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:56,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:56:56,305 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) [2024-11-17 07:56:56,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:56,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:56:56,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:56,630 INFO L124 PetriNetUnfolderBase]: 1280/3021 cut-off events. [2024-11-17 07:56:56,631 INFO L125 PetriNetUnfolderBase]: For 9236/9251 co-relation queries the response was YES. [2024-11-17 07:56:56,638 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. [2024-11-17 07:56:56,644 INFO L140 encePairwiseOnDemand]: 102/104 looper letters, 279 selfloop transitions, 1 changer transitions 0/329 dead transitions. [2024-11-17 07:56:56,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 329 transitions, 3655 flow [2024-11-17 07:56:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-17 07:56:56,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-11-17 07:56:56,645 INFO L175 Difference]: Start difference. First operand has 177 places, 330 transitions, 3099 flow. Second operand 3 states and 174 transitions. [2024-11-17 07:56:56,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 329 transitions, 3655 flow [2024-11-17 07:56:56,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 329 transitions, 2967 flow, removed 226 selfloop flow, removed 13 redundant places. [2024-11-17 07:56:56,668 INFO L231 Difference]: Finished difference. Result has 165 places, 329 transitions, 2409 flow [2024-11-17 07:56:56,669 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} [2024-11-17 07:56:56,670 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 74 predicate places. [2024-11-17 07:56:56,670 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 329 transitions, 2409 flow [2024-11-17 07:56:56,670 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) [2024-11-17 07:56:56,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:56,671 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] [2024-11-17 07:56:56,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 07:56:56,671 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:56,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2076226365, now seen corresponding path program 1 times [2024-11-17 07:56:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:56,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833056114] [2024-11-17 07:56:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833056114] [2024-11-17 07:56:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833056114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065705604] [2024-11-17 07:56:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:56,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:56,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-17 07:56:56,772 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) [2024-11-17 07:56:56,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:56,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-17 07:56:56,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:57,325 INFO L124 PetriNetUnfolderBase]: 1566/4400 cut-off events. [2024-11-17 07:56:57,326 INFO L125 PetriNetUnfolderBase]: For 8490/8505 co-relation queries the response was YES. [2024-11-17 07:56:57,336 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. [2024-11-17 07:56:57,344 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 526 selfloop transitions, 4 changer transitions 16/576 dead transitions. [2024-11-17 07:56:57,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 576 transitions, 5414 flow [2024-11-17 07:56:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2024-11-17 07:56:57,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-17 07:56:57,345 INFO L175 Difference]: Start difference. First operand has 165 places, 329 transitions, 2409 flow. Second operand 5 states and 280 transitions. [2024-11-17 07:56:57,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 576 transitions, 5414 flow [2024-11-17 07:56:57,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 576 transitions, 5413 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:57,380 INFO L231 Difference]: Finished difference. Result has 170 places, 330 transitions, 2428 flow [2024-11-17 07:56:57,380 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} [2024-11-17 07:56:57,380 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2024-11-17 07:56:57,381 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 330 transitions, 2428 flow [2024-11-17 07:56:57,381 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) [2024-11-17 07:56:57,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:57,381 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] [2024-11-17 07:56:57,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 07:56:57,381 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:57,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1738192343, now seen corresponding path program 1 times [2024-11-17 07:56:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480782559] [2024-11-17 07:56:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:57,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:57,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480782559] [2024-11-17 07:56:57,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480782559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:57,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:57,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:56:57,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144935201] [2024-11-17 07:56:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:57,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:56:57,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-17 07:56:57,535 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) [2024-11-17 07:56:57,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:57,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-17 07:56:57,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:58,296 INFO L124 PetriNetUnfolderBase]: 2116/6714 cut-off events. [2024-11-17 07:56:58,296 INFO L125 PetriNetUnfolderBase]: For 15371/15371 co-relation queries the response was YES. [2024-11-17 07:56:58,310 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. [2024-11-17 07:56:58,318 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 401 selfloop transitions, 34 changer transitions 19/484 dead transitions. [2024-11-17 07:56:58,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 484 transitions, 4515 flow [2024-11-17 07:56:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 328 transitions. [2024-11-17 07:56:58,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-11-17 07:56:58,319 INFO L175 Difference]: Start difference. First operand has 170 places, 330 transitions, 2428 flow. Second operand 6 states and 328 transitions. [2024-11-17 07:56:58,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 484 transitions, 4515 flow [2024-11-17 07:56:58,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 484 transitions, 4513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:58,374 INFO L231 Difference]: Finished difference. Result has 176 places, 344 transitions, 2713 flow [2024-11-17 07:56:58,374 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} [2024-11-17 07:56:58,374 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2024-11-17 07:56:58,374 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 344 transitions, 2713 flow [2024-11-17 07:56:58,375 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) [2024-11-17 07:56:58,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:58,375 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:58,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 07:56:58,375 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:58,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:58,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1202706576, now seen corresponding path program 2 times [2024-11-17 07:56:58,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:58,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058502296] [2024-11-17 07:56:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:58,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:56:58,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058502296] [2024-11-17 07:56:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058502296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774879504] [2024-11-17 07:56:58,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:58,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:58,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:58,538 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) [2024-11-17 07:56:58,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:56:58,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:58,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:58,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:58,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-17 07:56:58,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-17 07:56:58,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774879504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:58,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:58,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2024-11-17 07:56:58,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009904952] [2024-11-17 07:56:58,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:58,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:58,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 104 [2024-11-17 07:56:58,809 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) [2024-11-17 07:56:58,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:58,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 104 [2024-11-17 07:56:58,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:00,202 INFO L124 PetriNetUnfolderBase]: 3576/10666 cut-off events. [2024-11-17 07:57:00,203 INFO L125 PetriNetUnfolderBase]: For 24929/24959 co-relation queries the response was YES. [2024-11-17 07:57:00,230 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. [2024-11-17 07:57:00,247 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 427 selfloop transitions, 82 changer transitions 0/534 dead transitions. [2024-11-17 07:57:00,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 534 transitions, 5250 flow [2024-11-17 07:57:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 07:57:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 07:57:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 564 transitions. [2024-11-17 07:57:00,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3389423076923077 [2024-11-17 07:57:00,249 INFO L175 Difference]: Start difference. First operand has 176 places, 344 transitions, 2713 flow. Second operand 16 states and 564 transitions. [2024-11-17 07:57:00,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 534 transitions, 5250 flow [2024-11-17 07:57:00,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 534 transitions, 5232 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-17 07:57:00,433 INFO L231 Difference]: Finished difference. Result has 184 places, 362 transitions, 3010 flow [2024-11-17 07:57:00,434 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} [2024-11-17 07:57:00,434 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2024-11-17 07:57:00,434 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 362 transitions, 3010 flow [2024-11-17 07:57:00,434 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) [2024-11-17 07:57:00,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:00,434 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] [2024-11-17 07:57:00,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:00,635 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 [2024-11-17 07:57:00,635 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:00,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1805618090, now seen corresponding path program 1 times [2024-11-17 07:57:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684760149] [2024-11-17 07:57:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:00,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:00,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684760149] [2024-11-17 07:57:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684760149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:00,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615972827] [2024-11-17 07:57:00,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:00,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:00,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:00,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 104 [2024-11-17 07:57:00,711 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) [2024-11-17 07:57:00,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:00,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 104 [2024-11-17 07:57:00,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:02,117 INFO L124 PetriNetUnfolderBase]: 4786/13311 cut-off events. [2024-11-17 07:57:02,117 INFO L125 PetriNetUnfolderBase]: For 28107/28155 co-relation queries the response was YES. [2024-11-17 07:57:02,147 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. [2024-11-17 07:57:02,165 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 352 selfloop transitions, 11 changer transitions 2/415 dead transitions. [2024-11-17 07:57:02,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 415 transitions, 4070 flow [2024-11-17 07:57:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2024-11-17 07:57:02,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-17 07:57:02,166 INFO L175 Difference]: Start difference. First operand has 184 places, 362 transitions, 3010 flow. Second operand 5 states and 285 transitions. [2024-11-17 07:57:02,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 415 transitions, 4070 flow [2024-11-17 07:57:02,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 415 transitions, 4050 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:02,260 INFO L231 Difference]: Finished difference. Result has 188 places, 363 transitions, 3033 flow [2024-11-17 07:57:02,260 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} [2024-11-17 07:57:02,261 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 97 predicate places. [2024-11-17 07:57:02,261 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 363 transitions, 3033 flow [2024-11-17 07:57:02,261 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) [2024-11-17 07:57:02,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:02,261 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] [2024-11-17 07:57:02,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 07:57:02,261 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:02,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1284362314, now seen corresponding path program 1 times [2024-11-17 07:57:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473631493] [2024-11-17 07:57:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:02,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 07:57:02,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473631493] [2024-11-17 07:57:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473631493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239482517] [2024-11-17 07:57:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:02,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:02,358 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) [2024-11-17 07:57:02,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:57:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:02,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:57:02,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 07:57:02,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 07:57:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239482517] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 07:57:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2024-11-17 07:57:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513728475] [2024-11-17 07:57:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:02,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:57:02,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-17 07:57:02,580 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) [2024-11-17 07:57:02,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:02,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-17 07:57:02,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:04,610 INFO L124 PetriNetUnfolderBase]: 4778/13295 cut-off events. [2024-11-17 07:57:04,610 INFO L125 PetriNetUnfolderBase]: For 26275/26305 co-relation queries the response was YES. [2024-11-17 07:57:04,640 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. [2024-11-17 07:57:04,658 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 340 selfloop transitions, 135 changer transitions 4/508 dead transitions. [2024-11-17 07:57:04,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 508 transitions, 5067 flow [2024-11-17 07:57:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-11-17 07:57:04,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2024-11-17 07:57:04,659 INFO L175 Difference]: Start difference. First operand has 188 places, 363 transitions, 3033 flow. Second operand 5 states and 274 transitions. [2024-11-17 07:57:04,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 508 transitions, 5067 flow [2024-11-17 07:57:04,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 508 transitions, 5045 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:04,758 INFO L231 Difference]: Finished difference. Result has 193 places, 433 transitions, 4274 flow [2024-11-17 07:57:04,759 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} [2024-11-17 07:57:04,759 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2024-11-17 07:57:04,759 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 433 transitions, 4274 flow [2024-11-17 07:57:04,759 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) [2024-11-17 07:57:04,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:04,759 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] [2024-11-17 07:57:04,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:04,959 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 [2024-11-17 07:57:04,960 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:04,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash 186387768, now seen corresponding path program 1 times [2024-11-17 07:57:04,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:04,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351811621] [2024-11-17 07:57:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:57:05,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:05,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351811621] [2024-11-17 07:57:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351811621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:05,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212621002] [2024-11-17 07:57:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:05,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:05,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:05,132 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) [2024-11-17 07:57:05,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:57:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:05,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:05,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:05,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212621002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:05,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2024-11-17 07:57:05,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723488949] [2024-11-17 07:57:05,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:05,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 07:57:05,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 07:57:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:57:05,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-17 07:57:05,411 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) [2024-11-17 07:57:05,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:05,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-17 07:57:05,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:08,489 INFO L124 PetriNetUnfolderBase]: 7190/19698 cut-off events. [2024-11-17 07:57:08,489 INFO L125 PetriNetUnfolderBase]: For 46574/46598 co-relation queries the response was YES. [2024-11-17 07:57:08,543 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. [2024-11-17 07:57:08,573 INFO L140 encePairwiseOnDemand]: 90/104 looper letters, 557 selfloop transitions, 82 changer transitions 6/674 dead transitions. [2024-11-17 07:57:08,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 674 transitions, 7967 flow [2024-11-17 07:57:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:57:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:57:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 468 transitions. [2024-11-17 07:57:08,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-17 07:57:08,575 INFO L175 Difference]: Start difference. First operand has 193 places, 433 transitions, 4274 flow. Second operand 11 states and 468 transitions. [2024-11-17 07:57:08,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 674 transitions, 7967 flow [2024-11-17 07:57:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 674 transitions, 7918 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:08,765 INFO L231 Difference]: Finished difference. Result has 202 places, 469 transitions, 4984 flow [2024-11-17 07:57:08,765 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} [2024-11-17 07:57:08,765 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 111 predicate places. [2024-11-17 07:57:08,766 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 469 transitions, 4984 flow [2024-11-17 07:57:08,766 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) [2024-11-17 07:57:08,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:08,766 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] [2024-11-17 07:57:08,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:08,966 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 [2024-11-17 07:57:08,966 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:08,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 186387773, now seen corresponding path program 1 times [2024-11-17 07:57:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:08,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189867458] [2024-11-17 07:57:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:09,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:09,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189867458] [2024-11-17 07:57:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189867458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:09,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265693041] [2024-11-17 07:57:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:09,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:57:09,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:57:09,091 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) [2024-11-17 07:57:09,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:09,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:57:09,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:11,553 INFO L124 PetriNetUnfolderBase]: 4520/15189 cut-off events. [2024-11-17 07:57:11,553 INFO L125 PetriNetUnfolderBase]: For 65694/65742 co-relation queries the response was YES. [2024-11-17 07:57:11,595 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. [2024-11-17 07:57:11,620 INFO L140 encePairwiseOnDemand]: 102/104 looper letters, 403 selfloop transitions, 1 changer transitions 0/468 dead transitions. [2024-11-17 07:57:11,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 468 transitions, 5788 flow [2024-11-17 07:57:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-17 07:57:11,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-17 07:57:11,621 INFO L175 Difference]: Start difference. First operand has 202 places, 469 transitions, 4984 flow. Second operand 3 states and 169 transitions. [2024-11-17 07:57:11,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 468 transitions, 5788 flow [2024-11-17 07:57:11,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 468 transitions, 5770 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:11,863 INFO L231 Difference]: Finished difference. Result has 199 places, 468 transitions, 4964 flow [2024-11-17 07:57:11,864 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} [2024-11-17 07:57:11,864 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 108 predicate places. [2024-11-17 07:57:11,864 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 468 transitions, 4964 flow [2024-11-17 07:57:11,864 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) [2024-11-17 07:57:11,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:11,864 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] [2024-11-17 07:57:11,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 07:57:11,864 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:11,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash 186387767, now seen corresponding path program 1 times [2024-11-17 07:57:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:11,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246046314] [2024-11-17 07:57:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:11,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:11,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246046314] [2024-11-17 07:57:11,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246046314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690030381] [2024-11-17 07:57:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:11,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:11,948 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) [2024-11-17 07:57:11,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:57:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:12,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:12,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:12,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:12,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690030381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:12,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:12,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-17 07:57:12,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632258411] [2024-11-17 07:57:12,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:12,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:12,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:12,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:12,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:57:12,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:57:12,177 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) [2024-11-17 07:57:12,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:12,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:57:12,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:14,657 INFO L124 PetriNetUnfolderBase]: 5144/16259 cut-off events. [2024-11-17 07:57:14,657 INFO L125 PetriNetUnfolderBase]: For 66702/66702 co-relation queries the response was YES. [2024-11-17 07:57:14,711 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. [2024-11-17 07:57:14,748 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 411 selfloop transitions, 6 changer transitions 0/481 dead transitions. [2024-11-17 07:57:14,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 481 transitions, 5834 flow [2024-11-17 07:57:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2024-11-17 07:57:14,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-17 07:57:14,749 INFO L175 Difference]: Start difference. First operand has 199 places, 468 transitions, 4964 flow. Second operand 4 states and 228 transitions. [2024-11-17 07:57:14,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 481 transitions, 5834 flow [2024-11-17 07:57:15,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 481 transitions, 5803 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:15,083 INFO L231 Difference]: Finished difference. Result has 199 places, 469 transitions, 4963 flow [2024-11-17 07:57:15,083 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} [2024-11-17 07:57:15,083 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 108 predicate places. [2024-11-17 07:57:15,083 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 469 transitions, 4963 flow [2024-11-17 07:57:15,083 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) [2024-11-17 07:57:15,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:15,084 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] [2024-11-17 07:57:15,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 07:57:15,284 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 [2024-11-17 07:57:15,284 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:15,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash 186387774, now seen corresponding path program 1 times [2024-11-17 07:57:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:15,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989708978] [2024-11-17 07:57:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:15,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989708978] [2024-11-17 07:57:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989708978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834741286] [2024-11-17 07:57:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:15,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:15,359 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) [2024-11-17 07:57:15,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 07:57:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:15,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:15,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:15,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834741286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:15,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:15,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-17 07:57:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665098907] [2024-11-17 07:57:15,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:15,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 07:57:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 07:57:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:57:15,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:57:15,576 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) [2024-11-17 07:57:15,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:15,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:57:15,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:19,680 INFO L124 PetriNetUnfolderBase]: 10796/26943 cut-off events. [2024-11-17 07:57:19,681 INFO L125 PetriNetUnfolderBase]: For 80242/80242 co-relation queries the response was YES. [2024-11-17 07:57:19,771 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. [2024-11-17 07:57:19,827 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 452 selfloop transitions, 10 changer transitions 0/526 dead transitions. [2024-11-17 07:57:19,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 526 transitions, 6099 flow [2024-11-17 07:57:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 359 transitions. [2024-11-17 07:57:19,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753205128205128 [2024-11-17 07:57:19,829 INFO L175 Difference]: Start difference. First operand has 199 places, 469 transitions, 4963 flow. Second operand 6 states and 359 transitions. [2024-11-17 07:57:19,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 526 transitions, 6099 flow [2024-11-17 07:57:20,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 526 transitions, 6080 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:20,104 INFO L231 Difference]: Finished difference. Result has 207 places, 476 transitions, 5058 flow [2024-11-17 07:57:20,104 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} [2024-11-17 07:57:20,104 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2024-11-17 07:57:20,104 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 476 transitions, 5058 flow [2024-11-17 07:57:20,105 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) [2024-11-17 07:57:20,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:20,105 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] [2024-11-17 07:57:20,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:20,305 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 [2024-11-17 07:57:20,306 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:20,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2002768997, now seen corresponding path program 2 times [2024-11-17 07:57:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:20,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669153078] [2024-11-17 07:57:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669153078] [2024-11-17 07:57:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669153078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64085437] [2024-11-17 07:57:20,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:20,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:20,456 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) [2024-11-17 07:57:20,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 07:57:20,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:20,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:20,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:20,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:57:20,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:57:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64085437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:20,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-17 07:57:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410891427] [2024-11-17 07:57:20,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:20,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:57:20,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:57:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:57:20,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-17 07:57:20,744 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) [2024-11-17 07:57:20,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:20,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-17 07:57:20,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:25,592 INFO L124 PetriNetUnfolderBase]: 11002/28737 cut-off events. [2024-11-17 07:57:25,592 INFO L125 PetriNetUnfolderBase]: For 103644/103696 co-relation queries the response was YES. [2024-11-17 07:57:25,720 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. [2024-11-17 07:57:25,800 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 558 selfloop transitions, 205 changer transitions 0/824 dead transitions. [2024-11-17 07:57:25,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 824 transitions, 10437 flow [2024-11-17 07:57:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:57:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:57:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 691 transitions. [2024-11-17 07:57:25,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44294871794871793 [2024-11-17 07:57:25,801 INFO L175 Difference]: Start difference. First operand has 207 places, 476 transitions, 5058 flow. Second operand 15 states and 691 transitions. [2024-11-17 07:57:25,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 824 transitions, 10437 flow [2024-11-17 07:57:26,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 824 transitions, 10305 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:26,220 INFO L231 Difference]: Finished difference. Result has 217 places, 514 transitions, 5878 flow [2024-11-17 07:57:26,220 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} [2024-11-17 07:57:26,220 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 126 predicate places. [2024-11-17 07:57:26,220 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 514 transitions, 5878 flow [2024-11-17 07:57:26,221 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) [2024-11-17 07:57:26,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:26,221 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 12, 1, 1, 1, 1, 1] [2024-11-17 07:57:26,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 07:57:26,421 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 [2024-11-17 07:57:26,422 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:26,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1859574466, now seen corresponding path program 2 times [2024-11-17 07:57:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979969261] [2024-11-17 07:57:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:27,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:27,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979969261] [2024-11-17 07:57:27,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979969261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:27,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548738570] [2024-11-17 07:57:27,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:27,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:27,021 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) [2024-11-17 07:57:27,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 07:57:27,133 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:27,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:27,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:27,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-17 07:57:27,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-17 07:57:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548738570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:27,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:27,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-11-17 07:57:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216400450] [2024-11-17 07:57:27,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:27,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 07:57:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 07:57:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-17 07:57:27,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-17 07:57:27,386 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) [2024-11-17 07:57:27,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:27,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-17 07:57:27,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:32,845 INFO L124 PetriNetUnfolderBase]: 11119/29437 cut-off events. [2024-11-17 07:57:32,845 INFO L125 PetriNetUnfolderBase]: For 118310/118362 co-relation queries the response was YES. [2024-11-17 07:57:32,961 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. [2024-11-17 07:57:33,025 INFO L140 encePairwiseOnDemand]: 85/104 looper letters, 115 selfloop transitions, 449 changer transitions 0/592 dead transitions. [2024-11-17 07:57:33,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 592 transitions, 7646 flow [2024-11-17 07:57:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-17 07:57:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-17 07:57:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 2077 transitions. [2024-11-17 07:57:33,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35037112010796223 [2024-11-17 07:57:33,028 INFO L175 Difference]: Start difference. First operand has 217 places, 514 transitions, 5878 flow. Second operand 57 states and 2077 transitions. [2024-11-17 07:57:33,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 592 transitions, 7646 flow [2024-11-17 07:57:33,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 592 transitions, 7126 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-11-17 07:57:33,204 INFO L231 Difference]: Finished difference. Result has 266 places, 572 transitions, 6863 flow [2024-11-17 07:57:33,204 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} [2024-11-17 07:57:33,204 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 175 predicate places. [2024-11-17 07:57:33,204 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 572 transitions, 6863 flow [2024-11-17 07:57:33,205 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) [2024-11-17 07:57:33,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:33,205 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] [2024-11-17 07:57:33,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:33,405 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 [2024-11-17 07:57:33,405 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:33,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1535083100, now seen corresponding path program 2 times [2024-11-17 07:57:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798594337] [2024-11-17 07:57:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798594337] [2024-11-17 07:57:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798594337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956039780] [2024-11-17 07:57:33,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:33,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:33,635 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) [2024-11-17 07:57:33,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 07:57:33,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:57:33,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:33,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:57:33,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:33,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:33,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956039780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:33,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:33,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:57:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079078924] [2024-11-17 07:57:33,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:33,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 07:57:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:33,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 07:57:33,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 07:57:33,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 104 [2024-11-17 07:57:33,898 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) [2024-11-17 07:57:33,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:33,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 104 [2024-11-17 07:57:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand