./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:02:06,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:02:06,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:02:06,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:02:06,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:02:06,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:02:06,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:02:06,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:02:06,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:02:06,458 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:02:06,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:02:06,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:02:06,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:02:06,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:02:06,475 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:02:06,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:02:06,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:02:06,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:02:06,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:02:06,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:02:06,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:02:06,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:02:06,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:02:06,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:02:06,481 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:02:06,481 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:02:06,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:02:06,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:02:06,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:02:06,483 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:02:06,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:02:06,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:02:06,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:02:06,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:02:06,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:06,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:02:06,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:02:06,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:02:06,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:02:06,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:02:06,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:02:06,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:02:06,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:02:06,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:02:06,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-15 00:02:06,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:02:06,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:02:06,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:02:06,815 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:02:06,816 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:02:06,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-15 00:02:08,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:02:08,525 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:02:08,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-15 00:02:08,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2991425a6/3f886d11a61e4d4eafe782a1aec264ce/FLAG2d380b47d [2024-10-15 00:02:08,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2991425a6/3f886d11a61e4d4eafe782a1aec264ce [2024-10-15 00:02:08,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:02:08,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:02:08,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:08,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:02:08,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:02:08,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399d9523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08, skipping insertion in model container [2024-10-15 00:02:08,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,595 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:02:08,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:08,791 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:02:08,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:08,852 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:02:08,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08 WrapperNode [2024-10-15 00:02:08,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:08,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:08,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:02:08,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:02:08,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,924 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 332 [2024-10-15 00:02:08,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:08,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:02:08,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:02:08,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:02:08,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,987 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-15 00:02:08,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:08,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:09,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:09,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:09,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:09,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:09,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:02:09,049 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:02:09,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:02:09,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:02:09,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (1/1) ... [2024-10-15 00:02:09,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:09,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:02:09,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:02:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:02:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:02:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:02:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:02:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:02:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:02:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:02:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:02:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:02:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:02:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:02:09,173 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:02:09,282 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:02:09,284 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:02:09,808 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:02:09,809 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:02:10,242 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:02:10,243 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-15 00:02:10,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:10 BoogieIcfgContainer [2024-10-15 00:02:10,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:02:10,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:02:10,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:02:10,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:02:10,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:02:08" (1/3) ... [2024-10-15 00:02:10,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b7b9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:10, skipping insertion in model container [2024-10-15 00:02:10,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:08" (2/3) ... [2024-10-15 00:02:10,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b7b9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:10, skipping insertion in model container [2024-10-15 00:02:10,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:10" (3/3) ... [2024-10-15 00:02:10,255 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-10-15 00:02:10,273 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:02:10,273 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-10-15 00:02:10,273 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:02:10,404 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:02:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2024-10-15 00:02:10,509 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2024-10-15 00:02:10,509 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:02:10,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 11/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-10-15 00:02:10,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2024-10-15 00:02:10,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2024-10-15 00:02:10,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:02:10,548 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;@66b4ca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:02:10,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-10-15 00:02:10,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:02:10,552 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:02:10,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:02:10,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:10,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:02:10,554 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:10,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:10,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1091473, now seen corresponding path program 1 times [2024-10-15 00:02:10,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503528609] [2024-10-15 00:02:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:10,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:10,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:10,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503528609] [2024-10-15 00:02:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503528609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:10,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:10,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188392456] [2024-10-15 00:02:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:10,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:10,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:10,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-15 00:02:10,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:10,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:10,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-15 00:02:10,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:13,531 INFO L124 PetriNetUnfolderBase]: 10484/18132 cut-off events. [2024-10-15 00:02:13,531 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2024-10-15 00:02:13,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33028 conditions, 18132 events. 10484/18132 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148660 event pairs, 8602 based on Foata normal form. 941/12136 useless extension candidates. Maximal degree in co-relation 31779. Up to 14417 conditions per place. [2024-10-15 00:02:13,689 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 57 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-10-15 00:02:13,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 323 flow [2024-10-15 00:02:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-15 00:02:13,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-10-15 00:02:13,705 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 193 transitions. [2024-10-15 00:02:13,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 323 flow [2024-10-15 00:02:13,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:02:13,718 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 234 flow [2024-10-15 00:02:13,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-10-15 00:02:13,723 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-10-15 00:02:13,724 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 234 flow [2024-10-15 00:02:13,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:13,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:13,724 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:02:13,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:02:13,725 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:13,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1842604543, now seen corresponding path program 1 times [2024-10-15 00:02:13,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:13,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004972915] [2024-10-15 00:02:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:13,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004972915] [2024-10-15 00:02:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004972915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:13,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237679560] [2024-10-15 00:02:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:13,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:13,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:13,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:13,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:02:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:13,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:13,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:14,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:14,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237679560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:14,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:14,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:02:14,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378523877] [2024-10-15 00:02:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:14,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:14,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-15 00:02:14,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:14,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:14,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-15 00:02:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:16,206 INFO L124 PetriNetUnfolderBase]: 10484/18130 cut-off events. [2024-10-15 00:02:16,207 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-10-15 00:02:16,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32877 conditions, 18130 events. 10484/18130 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148872 event pairs, 8602 based on Foata normal form. 2/11198 useless extension candidates. Maximal degree in co-relation 32827. Up to 14407 conditions per place. [2024-10-15 00:02:16,301 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 50 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-10-15 00:02:16,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 350 flow [2024-10-15 00:02:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-10-15 00:02:16,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-10-15 00:02:16,306 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 234 flow. Second operand 6 states and 238 transitions. [2024-10-15 00:02:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 350 flow [2024-10-15 00:02:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:02:16,310 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 250 flow [2024-10-15 00:02:16,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-15 00:02:16,311 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2024-10-15 00:02:16,311 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 250 flow [2024-10-15 00:02:16,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:16,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:16,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:02:16,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:16,516 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 [2024-10-15 00:02:16,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:16,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:16,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1286164917, now seen corresponding path program 1 times [2024-10-15 00:02:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5555663] [2024-10-15 00:02:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:16,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5555663] [2024-10-15 00:02:16,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5555663] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897641411] [2024-10-15 00:02:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:16,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:16,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:02:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:16,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:16,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:16,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:16,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897641411] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:16,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:02:16,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947886291] [2024-10-15 00:02:16,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:16,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:16,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-15 00:02:16,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:16,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:16,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-15 00:02:16,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:18,851 INFO L124 PetriNetUnfolderBase]: 10490/18154 cut-off events. [2024-10-15 00:02:18,851 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-15 00:02:18,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32971 conditions, 18154 events. 10490/18154 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149062 event pairs, 8602 based on Foata normal form. 6/11225 useless extension candidates. Maximal degree in co-relation 32829. Up to 14418 conditions per place. [2024-10-15 00:02:18,973 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-10-15 00:02:18,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 524 flow [2024-10-15 00:02:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-10-15 00:02:18,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2024-10-15 00:02:18,976 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 250 flow. Second operand 10 states and 376 transitions. [2024-10-15 00:02:18,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 524 flow [2024-10-15 00:02:18,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 466 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-15 00:02:18,981 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 390 flow [2024-10-15 00:02:18,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-10-15 00:02:18,982 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-10-15 00:02:18,982 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 390 flow [2024-10-15 00:02:18,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:18,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:18,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:19,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:02:19,187 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 [2024-10-15 00:02:19,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:19,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2007898327, now seen corresponding path program 1 times [2024-10-15 00:02:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760049815] [2024-10-15 00:02:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:19,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:19,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760049815] [2024-10-15 00:02:19,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760049815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:19,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:19,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:19,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559569882] [2024-10-15 00:02:19,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:19,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:19,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-10-15 00:02:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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) [2024-10-15 00:02:19,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:19,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-10-15 00:02:19,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:20,662 INFO L124 PetriNetUnfolderBase]: 10490/18170 cut-off events. [2024-10-15 00:02:20,663 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-10-15 00:02:20,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33040 conditions, 18170 events. 10490/18170 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149066 event pairs, 8602 based on Foata normal form. 4/11241 useless extension candidates. Maximal degree in co-relation 32947. Up to 14433 conditions per place. [2024-10-15 00:02:20,835 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 84 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-10-15 00:02:20,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 643 flow [2024-10-15 00:02:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:02:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:02:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-10-15 00:02:20,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-10-15 00:02:20,838 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 390 flow. Second operand 5 states and 228 transitions. [2024-10-15 00:02:20,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 643 flow [2024-10-15 00:02:20,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:20,846 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 396 flow [2024-10-15 00:02:20,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-15 00:02:20,850 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2024-10-15 00:02:20,850 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 396 flow [2024-10-15 00:02:20,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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) [2024-10-15 00:02:20,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:20,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:20,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:02:20,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:20,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash -329465447, now seen corresponding path program 1 times [2024-10-15 00:02:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:20,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696683097] [2024-10-15 00:02:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:20,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696683097] [2024-10-15 00:02:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696683097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-15 00:02:21,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263612097] [2024-10-15 00:02:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:21,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:21,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:21,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-15 00:02:21,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2024-10-15 00:02:21,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:21,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:21,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2024-10-15 00:02:21,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:23,642 INFO L124 PetriNetUnfolderBase]: 17375/29213 cut-off events. [2024-10-15 00:02:23,642 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2024-10-15 00:02:23,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53835 conditions, 29213 events. 17375/29213 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 241275 event pairs, 12164 based on Foata normal form. 0/18959 useless extension candidates. Maximal degree in co-relation 53750. Up to 15572 conditions per place. [2024-10-15 00:02:23,870 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 171 selfloop transitions, 12 changer transitions 0/210 dead transitions. [2024-10-15 00:02:23,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 980 flow [2024-10-15 00:02:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-10-15 00:02:23,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-10-15 00:02:23,872 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 396 flow. Second operand 6 states and 354 transitions. [2024-10-15 00:02:23,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 980 flow [2024-10-15 00:02:23,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 210 transitions, 976 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:23,878 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 443 flow [2024-10-15 00:02:23,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-10-15 00:02:23,882 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-10-15 00:02:23,882 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 443 flow [2024-10-15 00:02:23,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:23,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:23,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:23,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:02:23,883 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1623494332, now seen corresponding path program 1 times [2024-10-15 00:02:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:23,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660367463] [2024-10-15 00:02:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660367463] [2024-10-15 00:02:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660367463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:23,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500505412] [2024-10-15 00:02:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:23,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:23,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-10-15 00:02:23,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 111 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:23,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:23,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-10-15 00:02:23,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:28,174 INFO L124 PetriNetUnfolderBase]: 31437/51477 cut-off events. [2024-10-15 00:02:28,174 INFO L125 PetriNetUnfolderBase]: For 6035/6451 co-relation queries the response was YES. [2024-10-15 00:02:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102654 conditions, 51477 events. 31437/51477 cut-off events. For 6035/6451 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 430220 event pairs, 17008 based on Foata normal form. 1044/35531 useless extension candidates. Maximal degree in co-relation 102557. Up to 26896 conditions per place. [2024-10-15 00:02:28,636 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-10-15 00:02:28,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 945 flow [2024-10-15 00:02:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-10-15 00:02:28,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-10-15 00:02:28,638 INFO L175 Difference]: Start difference. First operand has 108 places, 111 transitions, 443 flow. Second operand 4 states and 256 transitions. [2024-10-15 00:02:28,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 945 flow [2024-10-15 00:02:28,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 188 transitions, 929 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:28,673 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 470 flow [2024-10-15 00:02:28,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-10-15 00:02:28,674 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 19 predicate places. [2024-10-15 00:02:28,674 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 470 flow [2024-10-15 00:02:28,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:28,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:28,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:28,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:02:28,675 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:28,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977136, now seen corresponding path program 1 times [2024-10-15 00:02:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:28,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193546977] [2024-10-15 00:02:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:28,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:28,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193546977] [2024-10-15 00:02:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193546977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:28,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:28,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:02:28,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718921668] [2024-10-15 00:02:28,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:28,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:28,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:28,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-10-15 00:02:28,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:28,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:28,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-10-15 00:02:28,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:35,334 INFO L124 PetriNetUnfolderBase]: 44277/74188 cut-off events. [2024-10-15 00:02:35,334 INFO L125 PetriNetUnfolderBase]: For 26446/28463 co-relation queries the response was YES. [2024-10-15 00:02:35,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156664 conditions, 74188 events. 44277/74188 cut-off events. For 26446/28463 co-relation queries the response was YES. Maximal size of possible extension queue 2602. Compared 668413 event pairs, 13958 based on Foata normal form. 937/51487 useless extension candidates. Maximal degree in co-relation 156566. Up to 39187 conditions per place. [2024-10-15 00:02:35,898 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 128 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-10-15 00:02:35,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 877 flow [2024-10-15 00:02:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-10-15 00:02:35,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-10-15 00:02:35,900 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 470 flow. Second operand 3 states and 195 transitions. [2024-10-15 00:02:35,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 877 flow [2024-10-15 00:02:35,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:35,927 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 492 flow [2024-10-15 00:02:35,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2024-10-15 00:02:35,928 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2024-10-15 00:02:35,929 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 492 flow [2024-10-15 00:02:35,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:35,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:35,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:35,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:02:35,930 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:35,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977132, now seen corresponding path program 1 times [2024-10-15 00:02:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10561636] [2024-10-15 00:02:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:36,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10561636] [2024-10-15 00:02:36,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10561636] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444560105] [2024-10-15 00:02:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:36,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:36,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:36,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:36,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:02:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:36,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:02:36,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:36,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:36,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444560105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:36,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:36,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-15 00:02:36,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192198351] [2024-10-15 00:02:36,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:36,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 00:02:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 00:02:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-10-15 00:02:36,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-15 00:02:36,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 492 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-15 00:02:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:44,712 INFO L124 PetriNetUnfolderBase]: 54138/91002 cut-off events. [2024-10-15 00:02:44,712 INFO L125 PetriNetUnfolderBase]: For 32550/34026 co-relation queries the response was YES. [2024-10-15 00:02:45,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200359 conditions, 91002 events. 54138/91002 cut-off events. For 32550/34026 co-relation queries the response was YES. Maximal size of possible extension queue 3045. Compared 839518 event pairs, 39554 based on Foata normal form. 1188/68022 useless extension candidates. Maximal degree in co-relation 200227. Up to 60456 conditions per place. [2024-10-15 00:02:45,567 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 150 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-10-15 00:02:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 1297 flow [2024-10-15 00:02:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 00:02:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-15 00:02:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2024-10-15 00:02:45,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050235478806907 [2024-10-15 00:02:45,570 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 492 flow. Second operand 13 states and 516 transitions. [2024-10-15 00:02:45,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 1297 flow [2024-10-15 00:02:45,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:45,621 INFO L231 Difference]: Finished difference. Result has 128 places, 137 transitions, 755 flow [2024-10-15 00:02:45,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=755, PETRI_PLACES=128, PETRI_TRANSITIONS=137} [2024-10-15 00:02:45,622 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 36 predicate places. [2024-10-15 00:02:45,622 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 137 transitions, 755 flow [2024-10-15 00:02:45,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:45,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:45,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:45,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:02:45,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:45,824 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-15 00:02:45,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -377384081, now seen corresponding path program 1 times [2024-10-15 00:02:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489103430] [2024-10-15 00:02:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:45,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:46,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489103430] [2024-10-15 00:02:46,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489103430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:46,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966300999] [2024-10-15 00:02:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:46,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:46,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:46,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:46,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:02:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:46,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:02:46,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:46,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-10-15 00:02:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:46,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:46,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-10-15 00:02:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966300999] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:46,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:46,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-15 00:02:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655653076] [2024-10-15 00:02:46,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:46,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 00:02:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:46,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 00:02:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-15 00:02:46,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 98 [2024-10-15 00:02:46,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 137 transitions, 755 flow. Second operand has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:46,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:46,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 98 [2024-10-15 00:02:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand