./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:33:36,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:33:36,689 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:33:36,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:33:36,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:33:36,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:33:36,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:33:36,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:33:36,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:33:36,721 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:33:36,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:33:36,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:33:36,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:33:36,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:33:36,723 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:33:36,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:33:36,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:33:36,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:33:36,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:33:36,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:33:36,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:33:36,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:33:36,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:33:36,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:33:36,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:33:36,727 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:33:36,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:33:36,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:33:36,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:33:36,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:33:36,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:33:36,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:33:36,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:36,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:33:36,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:33:36,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:33:36,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:33:36,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:33:36,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:33:36,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:33:36,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:33:36,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:33:36,731 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-10-11 14:33:37,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:33:37,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:33:37,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:33:37,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:33:37,057 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:33:37,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-10-11 14:33:38,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:33:38,738 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:33:38,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2024-10-11 14:33:38,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c7a919862/e6249fb115904686b427ba5358276d89/FLAG0fecc063c [2024-10-11 14:33:38,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c7a919862/e6249fb115904686b427ba5358276d89 [2024-10-11 14:33:38,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:33:38,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:33:38,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:38,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:33:38,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:33:38,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:38" (1/1) ... [2024-10-11 14:33:38,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52137bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:38, skipping insertion in model container [2024-10-11 14:33:38,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:38" (1/1) ... [2024-10-11 14:33:38,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:33:39,014 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-10-11 14:33:39,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:39,030 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:33:39,048 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-10-11 14:33:39,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:39,068 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:33:39,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39 WrapperNode [2024-10-11 14:33:39,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:39,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:39,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:33:39,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:33:39,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,104 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2024-10-11 14:33:39,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:39,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:33:39,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:33:39,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:33:39,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,138 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 14:33:39,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:33:39,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:33:39,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:33:39,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:33:39,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (1/1) ... [2024-10-11 14:33:39,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:39,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:39,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:33:39,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:33:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:33:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:33:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:33:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:33:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:33:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:33:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:33:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:33:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:33:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:33:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:33:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:33:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:33:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:33:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:33:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:33:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:33:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:33:39,279 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:33:39,414 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:33:39,417 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:33:39,658 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:33:39,658 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:33:39,858 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:33:39,858 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 14:33:39,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:39 BoogieIcfgContainer [2024-10-11 14:33:39,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:33:39,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:33:39,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:33:39,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:33:39,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:38" (1/3) ... [2024-10-11 14:33:39,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6312788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:39, skipping insertion in model container [2024-10-11 14:33:39,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:39" (2/3) ... [2024-10-11 14:33:39,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6312788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:39, skipping insertion in model container [2024-10-11 14:33:39,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:39" (3/3) ... [2024-10-11 14:33:39,869 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-10-11 14:33:39,888 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:33:39,888 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:33:39,889 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:33:39,938 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:33:39,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 83 flow [2024-10-11 14:33:40,001 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-10-11 14:33:40,002 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:40,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 3/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-10-11 14:33:40,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 83 flow [2024-10-11 14:33:40,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 72 flow [2024-10-11 14:33:40,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:33:40,031 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;@24a49dd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:33:40,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:33:40,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:33:40,047 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2024-10-11 14:33:40,047 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:40,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:40,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:40,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:40,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1755584056, now seen corresponding path program 1 times [2024-10-11 14:33:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:40,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996330660] [2024-10-11 14:33:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:40,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:40,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996330660] [2024-10-11 14:33:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996330660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:40,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:33:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149428233] [2024-10-11 14:33:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:40,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:40,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-10-11 14:33:40,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-10-11 14:33:40,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:40,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-10-11 14:33:40,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:40,795 INFO L124 PetriNetUnfolderBase]: 317/538 cut-off events. [2024-10-11 14:33:40,795 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-11 14:33:40,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 538 events. 317/538 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2321 event pairs, 143 based on Foata normal form. 26/538 useless extension candidates. Maximal degree in co-relation 1001. Up to 331 conditions per place. [2024-10-11 14:33:40,805 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-10-11 14:33:40,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 166 flow [2024-10-11 14:33:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:33:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:33:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-11 14:33:40,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-10-11 14:33:40,821 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 72 flow. Second operand 4 states and 66 transitions. [2024-10-11 14:33:40,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 166 flow [2024-10-11 14:33:40,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:33:40,833 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 74 flow [2024-10-11 14:33:40,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-10-11 14:33:40,841 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-10-11 14:33:40,842 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 74 flow [2024-10-11 14:33:40,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-10-11 14:33:40,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:40,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:40,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:33:40,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:40,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash 282767181, now seen corresponding path program 1 times [2024-10-11 14:33:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899250810] [2024-10-11 14:33:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899250810] [2024-10-11 14:33:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899250810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:41,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:41,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:33:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472256451] [2024-10-11 14:33:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:41,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:41,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:41,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-10-11 14:33:41,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-11 14:33:41,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:41,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-10-11 14:33:41,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:41,241 INFO L124 PetriNetUnfolderBase]: 465/792 cut-off events. [2024-10-11 14:33:41,242 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-11 14:33:41,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 792 events. 465/792 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3737 event pairs, 201 based on Foata normal form. 38/801 useless extension candidates. Maximal degree in co-relation 274. Up to 485 conditions per place. [2024-10-11 14:33:41,253 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-10-11 14:33:41,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 184 flow [2024-10-11 14:33:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:33:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:33:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-11 14:33:41,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-10-11 14:33:41,257 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 4 states and 67 transitions. [2024-10-11 14:33:41,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 184 flow [2024-10-11 14:33:41,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:41,261 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 84 flow [2024-10-11 14:33:41,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-11 14:33:41,262 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-10-11 14:33:41,263 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 84 flow [2024-10-11 14:33:41,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-11 14:33:41,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:41,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:41,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:33:41,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:41,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1129487865, now seen corresponding path program 1 times [2024-10-11 14:33:41,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:41,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260899391] [2024-10-11 14:33:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:41,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:33:41,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260899391] [2024-10-11 14:33:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260899391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:41,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271548195] [2024-10-11 14:33:41,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:41,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:33:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:33:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:33:41,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-10-11 14:33:41,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-11 14:33:41,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:41,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-10-11 14:33:41,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:41,565 INFO L124 PetriNetUnfolderBase]: 465/789 cut-off events. [2024-10-11 14:33:41,565 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-10-11 14:33:41,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 789 events. 465/789 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3751 event pairs, 388 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 457. Up to 712 conditions per place. [2024-10-11 14:33:41,571 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 23 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-10-11 14:33:41,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 136 flow [2024-10-11 14:33:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:33:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:33:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-10-11 14:33:41,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-10-11 14:33:41,573 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 84 flow. Second operand 3 states and 48 transitions. [2024-10-11 14:33:41,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 136 flow [2024-10-11 14:33:41,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:41,575 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 92 flow [2024-10-11 14:33:41,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-10-11 14:33:41,576 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2024-10-11 14:33:41,576 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 92 flow [2024-10-11 14:33:41,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-11 14:33:41,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:41,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:41,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:33:41,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:41,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1450538109, now seen corresponding path program 1 times [2024-10-11 14:33:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636404443] [2024-10-11 14:33:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:41,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636404443] [2024-10-11 14:33:42,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636404443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:42,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761052533] [2024-10-11 14:33:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:42,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:42,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:42,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:33:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:42,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 14:33:42,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:42,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 14:33:42,358 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 15 treesize of output 7 [2024-10-11 14:33:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:42,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:42,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761052533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:42,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:42,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-10-11 14:33:42,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982383287] [2024-10-11 14:33:42,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:42,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:33:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:33:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:33:42,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-10-11 14:33:42,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 92 flow. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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) [2024-10-11 14:33:42,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:42,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-10-11 14:33:42,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:43,507 INFO L124 PetriNetUnfolderBase]: 1150/1846 cut-off events. [2024-10-11 14:33:43,507 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-10-11 14:33:43,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4327 conditions, 1846 events. 1150/1846 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9230 event pairs, 78 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 4314. Up to 481 conditions per place. [2024-10-11 14:33:43,513 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2024-10-11 14:33:43,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 140 transitions, 691 flow [2024-10-11 14:33:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:33:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:33:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 243 transitions. [2024-10-11 14:33:43,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4899193548387097 [2024-10-11 14:33:43,515 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 92 flow. Second operand 16 states and 243 transitions. [2024-10-11 14:33:43,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 140 transitions, 691 flow [2024-10-11 14:33:43,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 140 transitions, 687 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:33:43,519 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-10-11 14:33:43,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-10-11 14:33:43,519 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2024-10-11 14:33:43,520 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-10-11 14:33:43,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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) [2024-10-11 14:33:43,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-11 14:33:43,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-11 14:33:43,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-11 14:33:43,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-11 14:33:43,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:33:43,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:43,725 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-11 14:33:43,729 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:33:43,729 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:33:43,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:43 BasicIcfg [2024-10-11 14:33:43,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:33:43,735 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:33:43,735 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:33:43,735 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:33:43,736 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:39" (3/4) ... [2024-10-11 14:33:43,737 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:33:43,741 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-11 14:33:43,741 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-11 14:33:43,743 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-11 14:33:43,750 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-10-11 14:33:43,751 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-11 14:33:43,751 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-11 14:33:43,751 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 14:33:43,853 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:33:43,853 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:33:43,853 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:33:43,854 INFO L158 Benchmark]: Toolchain (without parser) took 5090.95ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 46.8MB in the beginning and 86.7MB in the end (delta: -39.9MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,854 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:33:43,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.67ms. Allocated memory is still 153.1MB. Free memory was 126.1MB in the beginning and 114.6MB in the end (delta: 11.5MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 153.1MB. Free memory was 114.6MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,856 INFO L158 Benchmark]: Boogie Preprocessor took 55.46ms. Allocated memory is still 153.1MB. Free memory was 112.5MB in the beginning and 110.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,860 INFO L158 Benchmark]: RCFGBuilder took 697.27ms. Allocated memory is still 153.1MB. Free memory was 110.4MB in the beginning and 73.8MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,861 INFO L158 Benchmark]: TraceAbstraction took 3873.67ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 73.8MB in the beginning and 92.3MB in the end (delta: -18.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,861 INFO L158 Benchmark]: Witness Printer took 118.71ms. Allocated memory is still 184.5MB. Free memory was 92.3MB in the beginning and 86.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-11 14:33:43,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.67ms. Allocated memory is still 153.1MB. Free memory was 126.1MB in the beginning and 114.6MB in the end (delta: 11.5MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 153.1MB. Free memory was 114.6MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.46ms. Allocated memory is still 153.1MB. Free memory was 112.5MB in the beginning and 110.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 697.27ms. Allocated memory is still 153.1MB. Free memory was 110.4MB in the beginning and 73.8MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3873.67ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 73.8MB in the beginning and 92.3MB in the end (delta: -18.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Witness Printer took 118.71ms. Allocated memory is still 184.5MB. Free memory was 92.3MB in the beginning and 86.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 46 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 671 IncrementalHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 671 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 SizeOfPredicates, 11 NumberOfNonLiveVariables, 181 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:33:43,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE