./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-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:40:09,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:40:09,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:40:09,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:40:09,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:40:09,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:40:09,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:40:09,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:40:09,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:40:09,816 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:40:09,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:40:09,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:40:09,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:40:09,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:40:09,820 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:40:09,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:40:09,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:40:09,821 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:40:09,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:40:09,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:40:09,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:40:09,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:40:09,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:40:09,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:40:09,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:40:09,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:40:09,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:40:09,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:40:09,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:40:09,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:40:09,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:40:09,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:40:09,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:40:09,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:40:09,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:40:09,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:40:09,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:40:09,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:40:09,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:40:09,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:40:09,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:40:09,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:40:09,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-10-14 14:40:10,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:40:10,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:40:10,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:40:10,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:40:10,111 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:40:10,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-14 14:40:11,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:40:11,724 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:40:11,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-14 14:40:11,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d0d87993/0a876e8bf6d4407d857ff1932b95bd28/FLAG56fb664cc [2024-10-14 14:40:11,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d0d87993/0a876e8bf6d4407d857ff1932b95bd28 [2024-10-14 14:40:11,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:40:11,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:40:11,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:40:11,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:40:11,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:40:11,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:40:11" (1/1) ... [2024-10-14 14:40:11,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679b2d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:11, skipping insertion in model container [2024-10-14 14:40:11,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:40:11" (1/1) ... [2024-10-14 14:40:11,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:40:11,987 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-array-sum2.wvr.c[2638,2651] [2024-10-14 14:40:11,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:40:12,008 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:40:12,030 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-array-sum2.wvr.c[2638,2651] [2024-10-14 14:40:12,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:40:12,051 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:40:12,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12 WrapperNode [2024-10-14 14:40:12,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:40:12,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:40:12,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:40:12,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:40:12,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,115 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 264 [2024-10-14 14:40:12,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:40:12,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:40:12,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:40:12,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:40:12,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,180 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-14 14:40:12,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,209 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:40:12,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:40:12,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:40:12,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:40:12,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (1/1) ... [2024-10-14 14:40:12,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:40:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:12,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 14:40:12,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 14:40:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:40:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:40:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:40:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:40:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:40:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:40:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:40:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:40:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:40:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:40:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:40:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:40:12,305 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:40:12,407 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:40:12,409 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:40:12,845 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:40:12,845 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:40:13,187 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:40:13,188 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-14 14:40:13,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:40:13 BoogieIcfgContainer [2024-10-14 14:40:13,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:40:13,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:40:13,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:40:13,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:40:13,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:40:11" (1/3) ... [2024-10-14 14:40:13,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c304b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:40:13, skipping insertion in model container [2024-10-14 14:40:13,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:12" (2/3) ... [2024-10-14 14:40:13,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c304b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:40:13, skipping insertion in model container [2024-10-14 14:40:13,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:40:13" (3/3) ... [2024-10-14 14:40:13,200 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-10-14 14:40:13,218 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:40:13,219 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:40:13,219 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:40:13,277 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 14:40:13,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 91 flow [2024-10-14 14:40:13,348 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-14 14:40:13,348 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:40:13,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 5/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-14 14:40:13,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 91 flow [2024-10-14 14:40:13,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 31 transitions, 80 flow [2024-10-14 14:40:13,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:40:13,375 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;@7f6715ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:40:13,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:40:13,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:40:13,392 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-10-14 14:40:13,392 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:40:13,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:13,393 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] [2024-10-14 14:40:13,394 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)] === [2024-10-14 14:40:13,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1493741134, now seen corresponding path program 1 times [2024-10-14 14:40:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:13,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293461172] [2024-10-14 14:40:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293461172] [2024-10-14 14:40:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293461172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:13,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:13,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:40:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949551446] [2024-10-14 14:40:13,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:13,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:40:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:13,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:40:13,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:40:13,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-14 14:40:13,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 14:40:13,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:13,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-14 14:40:13,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:14,270 INFO L124 PetriNetUnfolderBase]: 431/669 cut-off events. [2024-10-14 14:40:14,271 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-14 14:40:14,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 669 events. 431/669 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2569 event pairs, 306 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 1201. Up to 625 conditions per place. [2024-10-14 14:40:14,284 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 4 changer transitions 1/34 dead transitions. [2024-10-14 14:40:14,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 146 flow [2024-10-14 14:40:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:40:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:40:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-10-14 14:40:14,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-10-14 14:40:14,301 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 4 states and 61 transitions. [2024-10-14 14:40:14,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 146 flow [2024-10-14 14:40:14,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 14:40:14,308 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 94 flow [2024-10-14 14:40:14,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-14 14:40:14,314 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-10-14 14:40:14,314 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 94 flow [2024-10-14 14:40:14,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 14:40:14,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:14,315 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] [2024-10-14 14:40:14,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:40:14,316 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)] === [2024-10-14 14:40:14,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash -431074273, now seen corresponding path program 1 times [2024-10-14 14:40:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463775806] [2024-10-14 14:40:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:40:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463775806] [2024-10-14 14:40:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463775806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:40:14,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435740751] [2024-10-14 14:40:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:14,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:14,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:14,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:40:14,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:40:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:14,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 14:40:14,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:40:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:40:14,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:40:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:40:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435740751] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:40:14,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:40:14,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-10-14 14:40:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529882393] [2024-10-14 14:40:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:14,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:40:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:40:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 14:40:14,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-14 14:40:14,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2024-10-14 14:40:14,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:14,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-14 14:40:14,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:15,059 INFO L124 PetriNetUnfolderBase]: 627/935 cut-off events. [2024-10-14 14:40:15,060 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-14 14:40:15,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 935 events. 627/935 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3689 event pairs, 219 based on Foata normal form. 0/890 useless extension candidates. Maximal degree in co-relation 1866. Up to 462 conditions per place. [2024-10-14 14:40:15,069 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 39 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-10-14 14:40:15,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 212 flow [2024-10-14 14:40:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:40:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:40:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-10-14 14:40:15,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-10-14 14:40:15,073 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 94 flow. Second operand 5 states and 74 transitions. [2024-10-14 14:40:15,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 212 flow [2024-10-14 14:40:15,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 204 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:15,077 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 109 flow [2024-10-14 14:40:15,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-14 14:40:15,080 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-14 14:40:15,080 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 109 flow [2024-10-14 14:40:15,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2024-10-14 14:40:15,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:15,080 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] [2024-10-14 14:40:15,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 14:40:15,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:15,285 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)] === [2024-10-14 14:40:15,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:15,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1711154332, now seen corresponding path program 1 times [2024-10-14 14:40:15,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:15,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150383038] [2024-10-14 14:40:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:15,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:40:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150383038] [2024-10-14 14:40:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150383038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:15,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:15,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:40:15,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648898136] [2024-10-14 14:40:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:15,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:40:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:40:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:40:15,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-14 14:40:15,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 14:40:15,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:15,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-14 14:40:15,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:15,604 INFO L124 PetriNetUnfolderBase]: 747/1095 cut-off events. [2024-10-14 14:40:15,605 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-10-14 14:40:15,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 1095 events. 747/1095 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4093 event pairs, 296 based on Foata normal form. 0/1040 useless extension candidates. Maximal degree in co-relation 2499. Up to 559 conditions per place. [2024-10-14 14:40:15,614 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-14 14:40:15,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 229 flow [2024-10-14 14:40:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:40:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:40:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-10-14 14:40:15,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-10-14 14:40:15,617 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 109 flow. Second operand 4 states and 65 transitions. [2024-10-14 14:40:15,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 229 flow [2024-10-14 14:40:15,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 221 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:15,621 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 124 flow [2024-10-14 14:40:15,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-10-14 14:40:15,623 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-10-14 14:40:15,623 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 124 flow [2024-10-14 14:40:15,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 14:40:15,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:15,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:15,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:40:15,625 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)] === [2024-10-14 14:40:15,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash 505817667, now seen corresponding path program 1 times [2024-10-14 14:40:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194331235] [2024-10-14 14:40:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:17,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194331235] [2024-10-14 14:40:17,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194331235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:40:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425995772] [2024-10-14 14:40:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:17,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:17,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:40:17,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:40:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:17,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-14 14:40:17,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:40:17,347 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 [2024-10-14 14:40:17,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:17,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-10-14 14:40:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:17,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:40:17,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:17,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-10-14 14:40:18,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:18,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 182 [2024-10-14 14:40:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425995772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:40:19,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:40:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-10-14 14:40:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781692392] [2024-10-14 14:40:19,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:40:19,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 14:40:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 14:40:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-10-14 14:40:19,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-14 14:40:19,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 124 flow. Second operand has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 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) [2024-10-14 14:40:19,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:19,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-14 14:40:19,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:20,978 INFO L124 PetriNetUnfolderBase]: 2093/3170 cut-off events. [2024-10-14 14:40:20,978 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-10-14 14:40:20,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7942 conditions, 3170 events. 2093/3170 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15122 event pairs, 105 based on Foata normal form. 2/3169 useless extension candidates. Maximal degree in co-relation 4295. Up to 1479 conditions per place. [2024-10-14 14:40:21,000 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 142 selfloop transitions, 50 changer transitions 2/198 dead transitions. [2024-10-14 14:40:21,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 198 transitions, 1020 flow [2024-10-14 14:40:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 14:40:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-14 14:40:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 312 transitions. [2024-10-14 14:40:21,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-10-14 14:40:21,005 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 124 flow. Second operand 20 states and 312 transitions. [2024-10-14 14:40:21,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 198 transitions, 1020 flow [2024-10-14 14:40:21,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 198 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:21,014 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 445 flow [2024-10-14 14:40:21,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=445, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2024-10-14 14:40:21,016 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-10-14 14:40:21,016 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 445 flow [2024-10-14 14:40:21,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 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) [2024-10-14 14:40:21,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:21,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:21,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 14:40:21,218 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,SelfDestructingSolverStorable3 [2024-10-14 14:40:21,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:40:21,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:21,219 INFO L85 PathProgramCache]: Analyzing trace with hash -345259615, now seen corresponding path program 2 times [2024-10-14 14:40:21,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:21,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423397861] [2024-10-14 14:40:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:21,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:22,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423397861] [2024-10-14 14:40:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423397861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:40:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563931483] [2024-10-14 14:40:22,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:40:22,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:22,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:22,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:40:22,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:40:22,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:40:22,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:40:22,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-14 14:40:22,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:40:22,470 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 [2024-10-14 14:40:22,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:22,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-10-14 14:40:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:22,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:40:22,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:22,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-10-14 14:40:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:40:23,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2024-10-14 14:40:23,355 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-10-14 14:40:23,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 139 [2024-10-14 14:40:23,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:23,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 283 treesize of output 243 [2024-10-14 14:40:23,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:23,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 134 [2024-10-14 14:40:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563931483] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:40:23,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:40:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2024-10-14 14:40:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384685539] [2024-10-14 14:40:23,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:40:23,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 14:40:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 14:40:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-10-14 14:40:23,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-14 14:40:23,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 445 flow. Second operand has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 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) [2024-10-14 14:40:23,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:23,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-14 14:40:23,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:25,302 INFO L124 PetriNetUnfolderBase]: 2621/3922 cut-off events. [2024-10-14 14:40:25,303 INFO L125 PetriNetUnfolderBase]: For 4966/4966 co-relation queries the response was YES. [2024-10-14 14:40:25,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 3922 events. 2621/3922 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19196 event pairs, 321 based on Foata normal form. 1/3919 useless extension candidates. Maximal degree in co-relation 8014. Up to 2806 conditions per place. [2024-10-14 14:40:25,387 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 138 selfloop transitions, 58 changer transitions 1/201 dead transitions. [2024-10-14 14:40:25,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 201 transitions, 1313 flow [2024-10-14 14:40:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 14:40:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-14 14:40:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 275 transitions. [2024-10-14 14:40:25,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-14 14:40:25,394 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 445 flow. Second operand 20 states and 275 transitions. [2024-10-14 14:40:25,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 201 transitions, 1313 flow [2024-10-14 14:40:25,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 201 transitions, 1285 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:25,418 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 872 flow [2024-10-14 14:40:25,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=872, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2024-10-14 14:40:25,421 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2024-10-14 14:40:25,422 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 872 flow [2024-10-14 14:40:25,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 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) [2024-10-14 14:40:25,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:25,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:25,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 14:40:25,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:25,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:40:25,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1290033085, now seen corresponding path program 3 times [2024-10-14 14:40:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796561850] [2024-10-14 14:40:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:26,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796561850] [2024-10-14 14:40:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796561850] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:40:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773972213] [2024-10-14 14:40:26,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:40:26,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:26,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:40:26,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:40:26,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 14:40:26,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:40:26,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-14 14:40:26,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:40:26,855 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 [2024-10-14 14:40:27,192 INFO L349 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2024-10-14 14:40:27,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2024-10-14 14:40:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:27,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:40:27,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:27,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-10-14 14:40:27,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:27,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 243 [2024-10-14 14:40:27,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:40:27,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 142 [2024-10-14 14:40:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:28,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773972213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:40:28,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:40:28,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-10-14 14:40:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752426965] [2024-10-14 14:40:28,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:40:28,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 14:40:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 14:40:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-10-14 14:40:28,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-10-14 14:40:28,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 872 flow. Second operand has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 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) [2024-10-14 14:40:28,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:28,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-10-14 14:40:28,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:32,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:40:36,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:40:40,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:40:44,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:40:48,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:40:52,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:40:56,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:00,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:04,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:08,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:12,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:16,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:20,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:24,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:28,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:32,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:36,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:40,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:44,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 14:41:46,554 INFO L124 PetriNetUnfolderBase]: 5007/7210 cut-off events. [2024-10-14 14:41:46,554 INFO L125 PetriNetUnfolderBase]: For 14525/14534 co-relation queries the response was YES. [2024-10-14 14:41:46,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25670 conditions, 7210 events. 5007/7210 cut-off events. For 14525/14534 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 36255 event pairs, 414 based on Foata normal form. 10/7219 useless extension candidates. Maximal degree in co-relation 21564. Up to 3565 conditions per place. [2024-10-14 14:41:46,602 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 218 selfloop transitions, 141 changer transitions 4/365 dead transitions. [2024-10-14 14:41:46,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 365 transitions, 2727 flow [2024-10-14 14:41:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 14:41:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-14 14:41:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 427 transitions. [2024-10-14 14:41:46,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-10-14 14:41:46,605 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 872 flow. Second operand 30 states and 427 transitions. [2024-10-14 14:41:46,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 365 transitions, 2727 flow [2024-10-14 14:41:46,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 365 transitions, 2676 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-14 14:41:46,658 INFO L231 Difference]: Finished difference. Result has 128 places, 202 transitions, 1893 flow [2024-10-14 14:41:46,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1893, PETRI_PLACES=128, PETRI_TRANSITIONS=202} [2024-10-14 14:41:46,661 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 92 predicate places. [2024-10-14 14:41:46,661 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 202 transitions, 1893 flow [2024-10-14 14:41:46,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 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) [2024-10-14 14:41:46,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:41:46,662 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:41:46,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0