./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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-more-buffer-mult2.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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:07:24,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:07:24,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:07:24,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:07:24,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:07:24,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:07:24,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:07:24,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:07:24,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:07:24,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:07:24,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:07:24,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:07:24,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:07:24,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:07:24,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:07:24,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:07:24,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:07:24,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:07:24,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:07:24,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:07:24,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:07:24,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:07:24,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:07:24,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:07:24,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:07:24,736 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:07:24,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:07:24,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:07:24,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:07:24,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:07:24,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:07:24,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:07:24,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:07:24,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:07:24,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:24,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:07:24,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:07:24,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:07:24,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:07:24,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:07:24,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:07:24,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:07:24,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:07:24,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:07:24,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2024-11-19 14:07:25,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:07:25,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:07:25,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:07:25,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:07:25,031 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:07:25,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-11-19 14:07:26,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:07:26,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:07:26,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-11-19 14:07:26,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c518e9c/dfff0c797c0949fba54e6eea932b5084/FLAG3913e977d [2024-11-19 14:07:26,801 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c518e9c/dfff0c797c0949fba54e6eea932b5084 [2024-11-19 14:07:26,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:07:26,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:07:26,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:26,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:07:26,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:07:26,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:26" (1/1) ... [2024-11-19 14:07:26,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3dea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:26, skipping insertion in model container [2024-11-19 14:07:26,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:26" (1/1) ... [2024-11-19 14:07:26,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:07:27,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:27,132 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:07:27,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:27,185 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:07:27,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27 WrapperNode [2024-11-19 14:07:27,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:27,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:27,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:07:27,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:07:27,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,236 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 340 [2024-11-19 14:07:27,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:27,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:07:27,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:07:27,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:07:27,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,286 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 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]. [2024-11-19 14:07:27,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:07:27,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:07:27,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:07:27,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:07:27,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (1/1) ... [2024-11-19 14:07:27,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:27,353 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) [2024-11-19 14:07:27,356 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 [2024-11-19 14:07:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:07:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:07:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:07:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:07:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:07:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:07:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:07:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:07:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:07:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:07:27,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:07:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 14:07:27,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 14:07:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:07:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:07:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:07:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:07:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:07:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:07:27,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:07:27,417 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:07:27,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:07:27,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:07:28,095 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:07:28,095 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:07:28,610 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:07:28,611 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:07:28,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:28 BoogieIcfgContainer [2024-11-19 14:07:28,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:07:28,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:07:28,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:07:28,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:07:28,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:07:26" (1/3) ... [2024-11-19 14:07:28,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f58a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:28, skipping insertion in model container [2024-11-19 14:07:28,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:27" (2/3) ... [2024-11-19 14:07:28,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f58a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:28, skipping insertion in model container [2024-11-19 14:07:28,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:28" (3/3) ... [2024-11-19 14:07:28,621 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-11-19 14:07:28,636 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:07:28,637 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-19 14:07:28,637 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:07:28,767 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 14:07:28,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 188 flow [2024-11-19 14:07:28,881 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2024-11-19 14:07:28,882 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:07:28,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 76 events. 6/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 253 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-19 14:07:28,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 80 transitions, 188 flow [2024-11-19 14:07:28,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2024-11-19 14:07:28,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:07:28,910 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;@2ea0de47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:07:28,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-19 14:07:28,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:07:28,916 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:07:28,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:07:28,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:28,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:07:28,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:28,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1061841, now seen corresponding path program 1 times [2024-11-19 14:07:28,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:28,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481489582] [2024-11-19 14:07:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481489582] [2024-11-19 14:07:29,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481489582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:29,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:29,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16343377] [2024-11-19 14:07:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:29,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:29,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:29,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-11-19 14:07:29,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-19 14:07:29,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:29,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-11-19 14:07:29,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:34,458 INFO L124 PetriNetUnfolderBase]: 22241/31179 cut-off events. [2024-11-19 14:07:34,459 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-19 14:07:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62066 conditions, 31179 events. 22241/31179 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 253769 event pairs, 21798 based on Foata normal form. 2/12997 useless extension candidates. Maximal degree in co-relation 57340. Up to 29415 conditions per place. [2024-11-19 14:07:34,764 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 47 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-19 14:07:34,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 273 flow [2024-11-19 14:07:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-19 14:07:34,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-11-19 14:07:34,779 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 169 flow. Second operand 4 states and 154 transitions. [2024-11-19 14:07:34,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 273 flow [2024-11-19 14:07:34,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:34,870 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 200 flow [2024-11-19 14:07:34,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-19 14:07:34,875 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-11-19 14:07:34,877 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 200 flow [2024-11-19 14:07:34,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-19 14:07:34,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:34,878 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:07:34,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:07:34,879 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:34,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:34,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1569597922, now seen corresponding path program 1 times [2024-11-19 14:07:34,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:34,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696814620] [2024-11-19 14:07:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:35,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696814620] [2024-11-19 14:07:35,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696814620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64726780] [2024-11-19 14:07:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:35,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:35,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:35,048 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) [2024-11-19 14:07:35,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:07:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:35,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:35,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:35,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64726780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:35,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:35,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:07:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796932520] [2024-11-19 14:07:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:35,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:35,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-11-19 14:07:35,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-19 14:07:35,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:35,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-11-19 14:07:35,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:39,207 INFO L124 PetriNetUnfolderBase]: 22241/31177 cut-off events. [2024-11-19 14:07:39,207 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-19 14:07:39,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61444 conditions, 31177 events. 22241/31177 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 253409 event pairs, 21798 based on Foata normal form. 2/12998 useless extension candidates. Maximal degree in co-relation 61394. Up to 29405 conditions per place. [2024-11-19 14:07:39,491 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 40 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-11-19 14:07:39,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 296 flow [2024-11-19 14:07:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-19 14:07:39,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-11-19 14:07:39,497 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 200 flow. Second operand 6 states and 186 transitions. [2024-11-19 14:07:39,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 296 flow [2024-11-19 14:07:39,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:07:39,501 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 216 flow [2024-11-19 14:07:39,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-11-19 14:07:39,502 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-11-19 14:07:39,503 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 216 flow [2024-11-19 14:07:39,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-19 14:07:39,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:39,504 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:07:39,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:07:39,705 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 [2024-11-19 14:07:39,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:39,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1412896397, now seen corresponding path program 1 times [2024-11-19 14:07:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353724034] [2024-11-19 14:07:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353724034] [2024-11-19 14:07:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353724034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055908877] [2024-11-19 14:07:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:39,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:39,819 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) [2024-11-19 14:07:39,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:39,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:39,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:39,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055908877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:40,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:07:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140795105] [2024-11-19 14:07:40,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:40,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:40,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2024-11-19 14:07:40,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-19 14:07:40,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:40,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2024-11-19 14:07:40,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:43,463 INFO L124 PetriNetUnfolderBase]: 22247/31201 cut-off events. [2024-11-19 14:07:43,464 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-19 14:07:43,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61538 conditions, 31201 events. 22247/31201 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 253816 event pairs, 21798 based on Foata normal form. 6/13025 useless extension candidates. Maximal degree in co-relation 61396. Up to 29416 conditions per place. [2024-11-19 14:07:43,669 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 45 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-11-19 14:07:43,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 470 flow [2024-11-19 14:07:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-11-19 14:07:43,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-11-19 14:07:43,674 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 216 flow. Second operand 10 states and 296 transitions. [2024-11-19 14:07:43,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 470 flow [2024-11-19 14:07:43,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 412 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:43,679 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 356 flow [2024-11-19 14:07:43,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-11-19 14:07:43,680 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-11-19 14:07:43,680 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 356 flow [2024-11-19 14:07:43,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-19 14:07:43,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:43,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:43,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:07:43,885 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 [2024-11-19 14:07:43,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:43,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1163156695, now seen corresponding path program 1 times [2024-11-19 14:07:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455385734] [2024-11-19 14:07:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:43,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455385734] [2024-11-19 14:07:43,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455385734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:43,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:43,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:07:43,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076789105] [2024-11-19 14:07:43,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:43,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:43,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-19 14:07:43,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:43,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:43,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-19 14:07:43,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:48,458 INFO L124 PetriNetUnfolderBase]: 31828/45389 cut-off events. [2024-11-19 14:07:48,458 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-19 14:07:48,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88736 conditions, 45389 events. 31828/45389 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 5241. Compared 375444 event pairs, 11046 based on Foata normal form. 0/21285 useless extension candidates. Maximal degree in co-relation 88669. Up to 26988 conditions per place. [2024-11-19 14:07:48,769 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 100 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2024-11-19 14:07:48,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 122 transitions, 635 flow [2024-11-19 14:07:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-19 14:07:48,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-19 14:07:48,770 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 356 flow. Second operand 3 states and 158 transitions. [2024-11-19 14:07:48,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 122 transitions, 635 flow [2024-11-19 14:07:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 611 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:48,777 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 346 flow [2024-11-19 14:07:48,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-11-19 14:07:48,779 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-19 14:07:48,780 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 346 flow [2024-11-19 14:07:48,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:48,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:48,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:48,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:07:48,781 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:48,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1163156693, now seen corresponding path program 1 times [2024-11-19 14:07:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:48,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849584291] [2024-11-19 14:07:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849584291] [2024-11-19 14:07:48,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849584291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:48,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:48,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847703148] [2024-11-19 14:07:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:48,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:48,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-19 14:07:48,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-19 14:07:48,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:48,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-19 14:07:48,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:54,314 INFO L124 PetriNetUnfolderBase]: 33867/47119 cut-off events. [2024-11-19 14:07:54,314 INFO L125 PetriNetUnfolderBase]: For 2719/2719 co-relation queries the response was YES. [2024-11-19 14:07:54,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98837 conditions, 47119 events. 33867/47119 cut-off events. For 2719/2719 co-relation queries the response was YES. Maximal size of possible extension queue 5057. Compared 384214 event pairs, 32065 based on Foata normal form. 934/24523 useless extension candidates. Maximal degree in co-relation 98743. Up to 42156 conditions per place. [2024-11-19 14:07:54,625 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 106 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-11-19 14:07:54,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 723 flow [2024-11-19 14:07:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-11-19 14:07:54,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.545 [2024-11-19 14:07:54,627 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 346 flow. Second operand 5 states and 218 transitions. [2024-11-19 14:07:54,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 723 flow [2024-11-19 14:07:54,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:54,632 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 391 flow [2024-11-19 14:07:54,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-11-19 14:07:54,633 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-11-19 14:07:54,633 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 391 flow [2024-11-19 14:07:54,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-19 14:07:54,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:54,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:54,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:07:54,634 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:54,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:54,634 INFO L85 PathProgramCache]: Analyzing trace with hash 381094088, now seen corresponding path program 1 times [2024-11-19 14:07:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274524959] [2024-11-19 14:07:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:54,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:54,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274524959] [2024-11-19 14:07:54,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274524959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:54,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:54,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:07:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300996690] [2024-11-19 14:07:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:54,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:54,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-19 14:07:54,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-19 14:07:54,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:54,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-19 14:07:54,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:58,876 INFO L124 PetriNetUnfolderBase]: 29499/41129 cut-off events. [2024-11-19 14:07:58,876 INFO L125 PetriNetUnfolderBase]: For 7199/7199 co-relation queries the response was YES. [2024-11-19 14:07:59,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95166 conditions, 41129 events. 29499/41129 cut-off events. For 7199/7199 co-relation queries the response was YES. Maximal size of possible extension queue 4577. Compared 332199 event pairs, 27919 based on Foata normal form. 0/21026 useless extension candidates. Maximal degree in co-relation 95070. Up to 38893 conditions per place. [2024-11-19 14:07:59,177 INFO L140 encePairwiseOnDemand]: 78/80 looper letters, 69 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-11-19 14:07:59,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 529 flow [2024-11-19 14:07:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-19 14:07:59,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-19 14:07:59,178 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 391 flow. Second operand 3 states and 122 transitions. [2024-11-19 14:07:59,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 529 flow [2024-11-19 14:07:59,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 525 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:59,186 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 387 flow [2024-11-19 14:07:59,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2024-11-19 14:07:59,187 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-11-19 14:07:59,187 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 387 flow [2024-11-19 14:07:59,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-19 14:07:59,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:59,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:59,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:07:59,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:59,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 381094089, now seen corresponding path program 1 times [2024-11-19 14:07:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172037561] [2024-11-19 14:07:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:59,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172037561] [2024-11-19 14:07:59,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172037561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:59,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:59,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422098753] [2024-11-19 14:07:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:59,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:59,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-19 14:07:59,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-19 14:07:59,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:59,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-19 14:07:59,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand