./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-three-array-sum.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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:54:02,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:54:02,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:54:02,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:54:02,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:54:02,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:54:02,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:54:02,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:54:02,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:54:02,922 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:54:02,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:54:02,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:54:02,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:54:02,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:54:02,924 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:54:02,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:54:02,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:54:02,925 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:54:02,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:54:02,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:54:02,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:54:02,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:54:02,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:54:02,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:54:02,927 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:54:02,928 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:54:02,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:54:02,928 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:54:02,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:54:02,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:54:02,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:54:02,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:54:02,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:54:02,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:54:02,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:54:02,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:54:02,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:54:02,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:54:02,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:54:02,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:54:02,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:54:02,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:54:02,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-22 13:54:03,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:54:03,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:54:03,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:54:03,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:54:03,181 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:54:03,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-22 13:54:04,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:54:04,686 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:54:04,688 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-22 13:54:04,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58e69490f/b513eb816e344f5ba6fbe7ac3785cbe8/FLAGaa2365e32 [2024-11-22 13:54:04,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58e69490f/b513eb816e344f5ba6fbe7ac3785cbe8 [2024-11-22 13:54:04,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:54:04,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:54:04,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:54:04,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:54:04,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:54:04,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:04" (1/1) ... [2024-11-22 13:54:04,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212f6a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:04, skipping insertion in model container [2024-11-22 13:54:04,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:04" (1/1) ... [2024-11-22 13:54:04,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:54:04,958 WARN L250 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-three-array-sum.wvr.c[2730,2743] [2024-11-22 13:54:04,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:54:04,972 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:54:05,007 WARN L250 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-three-array-sum.wvr.c[2730,2743] [2024-11-22 13:54:05,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:54:05,024 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:54:05,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05 WrapperNode [2024-11-22 13:54:05,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:54:05,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:54:05,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:54:05,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:54:05,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,064 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 138 [2024-11-22 13:54:05,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:54:05,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:54:05,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:54:05,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:54:05,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,090 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-22 13:54:05,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:54:05,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:54:05,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:54:05,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:54:05,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (1/1) ... [2024-11-22 13:54:05,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:54:05,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:05,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:54:05,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:54:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:54:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:54:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:54:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:54:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:54:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:54:05,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:54:05,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:54:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:54:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:54:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:54:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:54:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:54:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:54:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:54:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:54:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:54:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:54:05,207 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:54:05,303 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:54:05,305 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:54:05,529 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:54:05,531 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:54:05,756 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:54:05,756 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:54:05,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:05 BoogieIcfgContainer [2024-11-22 13:54:05,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:54:05,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:54:05,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:54:05,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:54:05,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:54:04" (1/3) ... [2024-11-22 13:54:05,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5d2746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:05, skipping insertion in model container [2024-11-22 13:54:05,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:05" (2/3) ... [2024-11-22 13:54:05,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5d2746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:05, skipping insertion in model container [2024-11-22 13:54:05,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:05" (3/3) ... [2024-11-22 13:54:05,766 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-22 13:54:05,779 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:54:05,779 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:54:05,779 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:54:05,828 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:54:05,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2024-11-22 13:54:05,897 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-22 13:54:05,898 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:54:05,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-22 13:54:05,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2024-11-22 13:54:05,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2024-11-22 13:54:05,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:54:05,931 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;@5a8f642b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:54:05,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:54:05,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:54:05,943 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2024-11-22 13:54:05,943 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:54:05,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:05,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:05,944 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)] === [2024-11-22 13:54:05,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1514226813, now seen corresponding path program 1 times [2024-11-22 13:54:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:05,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107144092] [2024-11-22 13:54:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107144092] [2024-11-22 13:54:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107144092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:54:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76895305] [2024-11-22 13:54:06,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:06,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:54:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:54:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:54:06,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-22 13:54:06,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:06,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:06,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-22 13:54:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:06,880 INFO L124 PetriNetUnfolderBase]: 638/1043 cut-off events. [2024-11-22 13:54:06,880 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-22 13:54:06,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1043 events. 638/1043 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4669 event pairs, 172 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 1709. Up to 535 conditions per place. [2024-11-22 13:54:06,895 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 42 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-11-22 13:54:06,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 231 flow [2024-11-22 13:54:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:54:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:54:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-22 13:54:06,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-11-22 13:54:06,909 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 77 transitions. [2024-11-22 13:54:06,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 231 flow [2024-11-22 13:54:06,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:54:06,920 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 95 flow [2024-11-22 13:54:06,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2024-11-22 13:54:06,924 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-22 13:54:06,926 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 95 flow [2024-11-22 13:54:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:06,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:06,926 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] [2024-11-22 13:54:06,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:54:06,927 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)] === [2024-11-22 13:54:06,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1402878651, now seen corresponding path program 1 times [2024-11-22 13:54:06,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:06,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366682284] [2024-11-22 13:54:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366682284] [2024-11-22 13:54:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366682284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:07,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:07,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:54:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745192474] [2024-11-22 13:54:07,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:07,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:07,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:07,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-22 13:54:07,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:07,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:07,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-22 13:54:07,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:07,337 INFO L124 PetriNetUnfolderBase]: 1070/1919 cut-off events. [2024-11-22 13:54:07,338 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-11-22 13:54:07,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1919 events. 1070/1919 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10684 event pairs, 566 based on Foata normal form. 58/1855 useless extension candidates. Maximal degree in co-relation 1545. Up to 815 conditions per place. [2024-11-22 13:54:07,347 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-11-22 13:54:07,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 371 flow [2024-11-22 13:54:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:54:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:54:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-22 13:54:07,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-22 13:54:07,350 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 95 flow. Second operand 6 states and 136 transitions. [2024-11-22 13:54:07,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 371 flow [2024-11-22 13:54:07,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 86 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:54:07,352 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 196 flow [2024-11-22 13:54:07,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2024-11-22 13:54:07,353 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-22 13:54:07,353 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 196 flow [2024-11-22 13:54:07,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:07,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:07,353 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] [2024-11-22 13:54:07,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:54:07,354 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)] === [2024-11-22 13:54:07,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:07,354 INFO L85 PathProgramCache]: Analyzing trace with hash 680298853, now seen corresponding path program 1 times [2024-11-22 13:54:07,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:07,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091873389] [2024-11-22 13:54:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:07,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:07,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091873389] [2024-11-22 13:54:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091873389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281374039] [2024-11-22 13:54:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:07,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:07,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:54:07,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:54:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:07,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:54:07,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:07,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281374039] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:07,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:54:07,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:54:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782885073] [2024-11-22 13:54:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:07,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:07,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:07,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-22 13:54:07,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:07,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:07,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-22 13:54:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:08,088 INFO L124 PetriNetUnfolderBase]: 2124/3584 cut-off events. [2024-11-22 13:54:08,089 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2024-11-22 13:54:08,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3584 events. 2124/3584 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20538 event pairs, 780 based on Foata normal form. 0/3217 useless extension candidates. Maximal degree in co-relation 3477. Up to 1155 conditions per place. [2024-11-22 13:54:08,110 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 85 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-11-22 13:54:08,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 556 flow [2024-11-22 13:54:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:54:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:54:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-22 13:54:08,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683760683760684 [2024-11-22 13:54:08,116 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 196 flow. Second operand 6 states and 133 transitions. [2024-11-22 13:54:08,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 556 flow [2024-11-22 13:54:08,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:54:08,122 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 260 flow [2024-11-22 13:54:08,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2024-11-22 13:54:08,122 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-22 13:54:08,122 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 260 flow [2024-11-22 13:54:08,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:08,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:08,123 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] [2024-11-22 13:54:08,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:54:08,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:08,329 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)] === [2024-11-22 13:54:08,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1279354192, now seen corresponding path program 1 times [2024-11-22 13:54:08,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:08,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232080739] [2024-11-22 13:54:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:54:08,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232080739] [2024-11-22 13:54:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232080739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:54:08,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:54:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:54:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472201907] [2024-11-22 13:54:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:08,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:54:08,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-22 13:54:08,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:08,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:08,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-22 13:54:08,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:08,649 INFO L124 PetriNetUnfolderBase]: 1372/2233 cut-off events. [2024-11-22 13:54:08,650 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2024-11-22 13:54:08,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2233 events. 1372/2233 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10893 event pairs, 793 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 3741. Up to 1248 conditions per place. [2024-11-22 13:54:08,659 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 28 selfloop transitions, 6 changer transitions 37/78 dead transitions. [2024-11-22 13:54:08,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 458 flow [2024-11-22 13:54:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:54:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:54:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-22 13:54:08,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-11-22 13:54:08,660 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 260 flow. Second operand 6 states and 120 transitions. [2024-11-22 13:54:08,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 458 flow [2024-11-22 13:54:08,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:54:08,664 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 179 flow [2024-11-22 13:54:08,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-11-22 13:54:08,664 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-22 13:54:08,665 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 179 flow [2024-11-22 13:54:08,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:08,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:08,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:08,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:54:08,665 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)] === [2024-11-22 13:54:08,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:08,666 INFO L85 PathProgramCache]: Analyzing trace with hash -463702353, now seen corresponding path program 1 times [2024-11-22 13:54:08,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:08,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372950123] [2024-11-22 13:54:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:08,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:08,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372950123] [2024-11-22 13:54:08,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372950123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:08,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239839811] [2024-11-22 13:54:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:08,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:08,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:08,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:54:08,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:54:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:08,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:54:08,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:08,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:08,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239839811] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:08,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:54:08,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:54:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394232131] [2024-11-22 13:54:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:08,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:08,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-22 13:54:08,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:08,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:08,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-22 13:54:08,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:09,066 INFO L124 PetriNetUnfolderBase]: 910/1560 cut-off events. [2024-11-22 13:54:09,066 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-11-22 13:54:09,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1560 events. 910/1560 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7687 event pairs, 290 based on Foata normal form. 72/1536 useless extension candidates. Maximal degree in co-relation 3901. Up to 647 conditions per place. [2024-11-22 13:54:09,073 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-22 13:54:09,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 321 flow [2024-11-22 13:54:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-22 13:54:09,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-11-22 13:54:09,075 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 179 flow. Second operand 5 states and 87 transitions. [2024-11-22 13:54:09,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 321 flow [2024-11-22 13:54:09,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 262 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-22 13:54:09,078 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 155 flow [2024-11-22 13:54:09,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-22 13:54:09,079 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2024-11-22 13:54:09,079 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 155 flow [2024-11-22 13:54:09,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:09,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:09,079 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, 1, 1, 1, 1, 1] [2024-11-22 13:54:09,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:54:09,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:09,281 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)] === [2024-11-22 13:54:09,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash -327834966, now seen corresponding path program 1 times [2024-11-22 13:54:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029904446] [2024-11-22 13:54:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:54:09,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029904446] [2024-11-22 13:54:09,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029904446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899467727] [2024-11-22 13:54:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:09,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:09,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:09,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:54:09,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:54:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:09,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:54:09,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:54:09,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:54:09,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899467727] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:09,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:54:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:54:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491421780] [2024-11-22 13:54:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:54:09,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:54:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:54:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:54:09,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-22 13:54:09,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:09,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:09,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-22 13:54:09,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:09,614 INFO L124 PetriNetUnfolderBase]: 686/1207 cut-off events. [2024-11-22 13:54:09,615 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-11-22 13:54:09,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1207 events. 686/1207 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5626 event pairs, 328 based on Foata normal form. 62/1200 useless extension candidates. Maximal degree in co-relation 2900. Up to 708 conditions per place. [2024-11-22 13:54:09,621 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-22 13:54:09,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 307 flow [2024-11-22 13:54:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:54:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:54:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-22 13:54:09,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-11-22 13:54:09,622 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 155 flow. Second operand 5 states and 94 transitions. [2024-11-22 13:54:09,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 307 flow [2024-11-22 13:54:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 299 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:09,624 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 170 flow [2024-11-22 13:54:09,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-22 13:54:09,624 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-11-22 13:54:09,624 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 170 flow [2024-11-22 13:54:09,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:09,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:09,625 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, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:09,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:54:09,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:09,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:54:09,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1503818552, now seen corresponding path program 1 times [2024-11-22 13:54:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:09,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602505735] [2024-11-22 13:54:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602505735] [2024-11-22 13:54:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602505735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493193572] [2024-11-22 13:54:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:54:10,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:10,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:10,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:54:10,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:54:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:54:10,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 13:54:10,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:11,182 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2024-11-22 13:54:11,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2024-11-22 13:54:12,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:54:12,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 499 [2024-11-22 13:54:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:17,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:37,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:54:37,582 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 38 treesize of output 83 [2024-11-22 13:54:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:38,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493193572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:54:38,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:54:38,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 26 [2024-11-22 13:54:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751639239] [2024-11-22 13:54:38,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:54:38,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 13:54:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:54:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 13:54:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=589, Unknown=3, NotChecked=0, Total=702 [2024-11-22 13:54:42,334 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] [2024-11-22 13:54:46,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:54:50,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:54:50,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-22 13:54:50,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 170 flow. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:50,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:54:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-22 13:54:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:54:52,850 INFO L124 PetriNetUnfolderBase]: 2493/3878 cut-off events. [2024-11-22 13:54:52,851 INFO L125 PetriNetUnfolderBase]: For 3708/3724 co-relation queries the response was YES. [2024-11-22 13:54:52,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 3878 events. 2493/3878 cut-off events. For 3708/3724 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19130 event pairs, 72 based on Foata normal form. 1/3754 useless extension candidates. Maximal degree in co-relation 10595. Up to 1636 conditions per place. [2024-11-22 13:54:52,879 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 160 selfloop transitions, 47 changer transitions 1/212 dead transitions. [2024-11-22 13:54:52,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 212 transitions, 1207 flow [2024-11-22 13:54:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 13:54:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 13:54:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 323 transitions. [2024-11-22 13:54:52,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601139601139601 [2024-11-22 13:54:52,882 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 170 flow. Second operand 18 states and 323 transitions. [2024-11-22 13:54:52,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 212 transitions, 1207 flow [2024-11-22 13:54:52,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 212 transitions, 1187 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-22 13:54:52,888 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 562 flow [2024-11-22 13:54:52,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=562, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2024-11-22 13:54:52,888 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-11-22 13:54:52,888 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 562 flow [2024-11-22 13:54:52,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:54:52,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:54:52,889 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, 1, 1, 1, 1, 1, 1] [2024-11-22 13:54:52,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:54:53,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:53,094 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:54:53,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:54:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash -100629604, now seen corresponding path program 2 times [2024-11-22 13:54:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:54:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24620667] [2024-11-22 13:54:53,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:54:53,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:53,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:54,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:54:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24620667] [2024-11-22 13:54:54,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24620667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:54:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976906672] [2024-11-22 13:54:54,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:54:54,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:54:54,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:54:54,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:54:54,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:54:54,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:54:54,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:54:54,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-22 13:54:54,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:54:54,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-22 13:54:54,650 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-22 13:54:54,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-22 13:54:54,722 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-22 13:54:54,723 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 16 treesize of output 18 [2024-11-22 13:54:55,136 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 13:54:55,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-22 13:54:55,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:54:55,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-22 13:54:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:54:55,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:54:56,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:54:56,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 316 treesize of output 296 [2024-11-22 13:54:56,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 59 treesize of output 57 [2024-11-22 13:54:56,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:54:56,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 382 treesize of output 334 [2024-11-22 13:55:02,782 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:02,949 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:04,232 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:04,342 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:04,490 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-22 13:55:04,616 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-22 13:55:04,699 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:04,942 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:05,125 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:05,262 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:05,312 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-22 13:55:05,369 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-22 13:55:05,565 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.