./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:39:39,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:39:39,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:39:39,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:39:39,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:39:39,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:39:39,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:39:39,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:39:39,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:39:39,930 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:39:39,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:39:39,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:39:39,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:39:39,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:39:39,932 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:39:39,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:39:39,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:39:39,932 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:39:39,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:39:39,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:39:39,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:39:39,933 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:39:39,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:39:39,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:39:39,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:39:39,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:39:39,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:39:39,935 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2025-02-06 04:39:40,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:39:40,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:39:40,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:39:40,189 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:39:40,190 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:39:40,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-02-06 04:39:41,379 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4926656c/f4fad3542f324cac8a6e6fa9f1536a63/FLAG415a51dd8 [2025-02-06 04:39:41,601 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:39:41,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-02-06 04:39:41,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4926656c/f4fad3542f324cac8a6e6fa9f1536a63/FLAG415a51dd8 [2025-02-06 04:39:41,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4926656c/f4fad3542f324cac8a6e6fa9f1536a63 [2025-02-06 04:39:41,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:39:41,955 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:39:41,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:39:41,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:39:41,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:39:41,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:39:41" (1/1) ... [2025-02-06 04:39:41,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47818d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:41, skipping insertion in model container [2025-02-06 04:39:41,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:39:41" (1/1) ... [2025-02-06 04:39:41,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:39:42,089 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2025-02-06 04:39:42,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:39:42,104 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:39:42,123 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2025-02-06 04:39:42,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:39:42,140 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:39:42,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42 WrapperNode [2025-02-06 04:39:42,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:39:42,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:39:42,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:39:42,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:39:42,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,175 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 170 [2025-02-06 04:39:42,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:39:42,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:39:42,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:39:42,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:39:42,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,198 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:39:42,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,206 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:39:42,217 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:39:42,218 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:39:42,218 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:39:42,219 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (1/1) ... [2025-02-06 04:39:42,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:39:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:39:42,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:39:42,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:39:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:39:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:39:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:39:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:39:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:39:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:39:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:39:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:39:42,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:39:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:39:42,277 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:39:42,368 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:39:42,369 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:39:42,610 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:39:42,610 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:39:42,789 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:39:42,789 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:39:42,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:39:42 BoogieIcfgContainer [2025-02-06 04:39:42,790 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:39:42,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:39:42,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:39:42,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:39:42,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:39:41" (1/3) ... [2025-02-06 04:39:42,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b70607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:39:42, skipping insertion in model container [2025-02-06 04:39:42,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:39:42" (2/3) ... [2025-02-06 04:39:42,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b70607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:39:42, skipping insertion in model container [2025-02-06 04:39:42,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:39:42" (3/3) ... [2025-02-06 04:39:42,797 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2025-02-06 04:39:42,807 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:39:42,808 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-06 04:39:42,809 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:39:42,858 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:39:42,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2025-02-06 04:39:42,909 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-02-06 04:39:42,911 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:39:42,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-02-06 04:39:42,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2025-02-06 04:39:42,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2025-02-06 04:39:42,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:39:42,935 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;@2ea859b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:39:42,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:39:42,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:39:42,951 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-06 04:39:42,951 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:39:42,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:42,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:39:42,952 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)] === [2025-02-06 04:39:42,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash 798047629, now seen corresponding path program 1 times [2025-02-06 04:39:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:42,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554537007] [2025-02-06 04:39:42,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:39:42,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:43,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:39:43,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:39:43,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:39:43,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:43,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554537007] [2025-02-06 04:39:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554537007] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:43,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:39:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398441448] [2025-02-06 04:39:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:43,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:39:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:43,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:39:43,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:39:43,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-02-06 04:39:43,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-02-06 04:39:43,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:43,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-02-06 04:39:43,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:43,473 INFO L124 PetriNetUnfolderBase]: 617/956 cut-off events. [2025-02-06 04:39:43,474 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2025-02-06 04:39:43,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 956 events. 617/956 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3850 event pairs, 126 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 1717. Up to 677 conditions per place. [2025-02-06 04:39:43,484 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2025-02-06 04:39:43,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2025-02-06 04:39:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:39:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:39:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-02-06 04:39:43,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-02-06 04:39:43,495 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2025-02-06 04:39:43,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2025-02-06 04:39:43,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:39:43,501 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2025-02-06 04:39:43,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2025-02-06 04:39:43,506 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2025-02-06 04:39:43,507 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2025-02-06 04:39:43,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-02-06 04:39:43,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:43,507 INFO L206 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] [2025-02-06 04:39:43,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:39:43,508 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)] === [2025-02-06 04:39:43,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1287002738, now seen corresponding path program 1 times [2025-02-06 04:39:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938768433] [2025-02-06 04:39:43,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:39:43,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:43,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:39:43,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:39:43,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:39:43,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938768433] [2025-02-06 04:39:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938768433] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:39:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438143581] [2025-02-06 04:39:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:43,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:39:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:43,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:39:43,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:39:43,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:39:43,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 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) [2025-02-06 04:39:43,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:43,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:39:43,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:43,959 INFO L124 PetriNetUnfolderBase]: 1206/1894 cut-off events. [2025-02-06 04:39:43,960 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2025-02-06 04:39:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 1894 events. 1206/1894 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9229 event pairs, 745 based on Foata normal form. 0/1822 useless extension candidates. Maximal degree in co-relation 1088. Up to 1120 conditions per place. [2025-02-06 04:39:43,971 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 63 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-02-06 04:39:43,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 71 transitions, 334 flow [2025-02-06 04:39:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:39:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:39:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2025-02-06 04:39:43,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2025-02-06 04:39:43,972 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 5 states and 92 transitions. [2025-02-06 04:39:43,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 71 transitions, 334 flow [2025-02-06 04:39:43,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 71 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:39:43,974 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 122 flow [2025-02-06 04:39:43,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2025-02-06 04:39:43,975 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-02-06 04:39:43,975 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 122 flow [2025-02-06 04:39:43,975 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) [2025-02-06 04:39:43,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:43,976 INFO L206 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] [2025-02-06 04:39:43,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:39:43,976 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)] === [2025-02-06 04:39:43,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1391260711, now seen corresponding path program 1 times [2025-02-06 04:39:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:43,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908285582] [2025-02-06 04:39:43,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:39:43,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:43,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:39:43,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:39:43,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:39:43,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:44,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908285582] [2025-02-06 04:39:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908285582] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:44,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:44,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:39:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666647062] [2025-02-06 04:39:44,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:44,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:39:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:44,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:39:44,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:39:44,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:39:44,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 122 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) [2025-02-06 04:39:44,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:44,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:39:44,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:44,294 INFO L124 PetriNetUnfolderBase]: 1047/1641 cut-off events. [2025-02-06 04:39:44,294 INFO L125 PetriNetUnfolderBase]: For 677/755 co-relation queries the response was YES. [2025-02-06 04:39:44,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 1641 events. 1047/1641 cut-off events. For 677/755 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7555 event pairs, 686 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 2766. Up to 1133 conditions per place. [2025-02-06 04:39:44,303 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 56 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2025-02-06 04:39:44,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 326 flow [2025-02-06 04:39:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:39:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:39:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2025-02-06 04:39:44,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2025-02-06 04:39:44,304 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 122 flow. Second operand 5 states and 87 transitions. [2025-02-06 04:39:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 326 flow [2025-02-06 04:39:44,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 322 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:39:44,307 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 143 flow [2025-02-06 04:39:44,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2025-02-06 04:39:44,307 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2025-02-06 04:39:44,307 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 143 flow [2025-02-06 04:39:44,308 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) [2025-02-06 04:39:44,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:44,308 INFO L206 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] [2025-02-06 04:39:44,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:39:44,308 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)] === [2025-02-06 04:39:44,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1437167876, now seen corresponding path program 1 times [2025-02-06 04:39:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973035749] [2025-02-06 04:39:44,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:39:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:44,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:39:44,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:39:44,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:39:44,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:44,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973035749] [2025-02-06 04:39:44,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973035749] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:39:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289744323] [2025-02-06 04:39:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:44,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:39:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:44,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:39:44,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:39:44,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:39:44,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 143 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) [2025-02-06 04:39:44,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:44,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:39:44,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:44,634 INFO L124 PetriNetUnfolderBase]: 882/1337 cut-off events. [2025-02-06 04:39:44,634 INFO L125 PetriNetUnfolderBase]: For 784/921 co-relation queries the response was YES. [2025-02-06 04:39:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 1337 events. 882/1337 cut-off events. For 784/921 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5569 event pairs, 601 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 2827. Up to 1095 conditions per place. [2025-02-06 04:39:44,641 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 2 changer transitions 23/56 dead transitions. [2025-02-06 04:39:44,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 309 flow [2025-02-06 04:39:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:39:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:39:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2025-02-06 04:39:44,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2025-02-06 04:39:44,642 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 143 flow. Second operand 5 states and 81 transitions. [2025-02-06 04:39:44,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 309 flow [2025-02-06 04:39:44,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:39:44,645 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 116 flow [2025-02-06 04:39:44,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2025-02-06 04:39:44,645 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2025-02-06 04:39:44,645 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 116 flow [2025-02-06 04:39:44,645 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) [2025-02-06 04:39:44,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:44,646 INFO L206 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] [2025-02-06 04:39:44,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:39:44,646 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)] === [2025-02-06 04:39:44,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash -315886043, now seen corresponding path program 1 times [2025-02-06 04:39:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:44,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759875245] [2025-02-06 04:39:44,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:39:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:44,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:39:44,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:39:44,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:39:44,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:44,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759875245] [2025-02-06 04:39:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759875245] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:39:44,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120032283] [2025-02-06 04:39:44,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:39:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:39:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:39:44,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:39:44,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:39:44,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:39:44,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:39:44,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:39:44,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:44,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:39:44,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:39:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:44,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:39:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:39:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120032283] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:39:44,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:39:44,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-02-06 04:39:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4296161] [2025-02-06 04:39:44,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:44,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:39:44,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:44,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:39:44,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:39:44,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:39:44,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:39:44,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:44,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:39:44,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:45,285 INFO L124 PetriNetUnfolderBase]: 1468/2122 cut-off events. [2025-02-06 04:39:45,285 INFO L125 PetriNetUnfolderBase]: For 843/993 co-relation queries the response was YES. [2025-02-06 04:39:45,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 2122 events. 1468/2122 cut-off events. For 843/993 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9238 event pairs, 293 based on Foata normal form. 0/1872 useless extension candidates. Maximal degree in co-relation 5688. Up to 668 conditions per place. [2025-02-06 04:39:45,296 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 87 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2025-02-06 04:39:45,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 104 transitions, 559 flow [2025-02-06 04:39:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:39:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:39:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2025-02-06 04:39:45,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4612794612794613 [2025-02-06 04:39:45,297 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 116 flow. Second operand 9 states and 137 transitions. [2025-02-06 04:39:45,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 104 transitions, 559 flow [2025-02-06 04:39:45,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 104 transitions, 489 flow, removed 33 selfloop flow, removed 8 redundant places. [2025-02-06 04:39:45,306 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 178 flow [2025-02-06 04:39:45,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2025-02-06 04:39:45,307 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2025-02-06 04:39:45,308 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 178 flow [2025-02-06 04:39:45,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:39:45,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:45,308 INFO L206 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] [2025-02-06 04:39:45,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:39:45,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:39:45,509 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)] === [2025-02-06 04:39:45,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -842556523, now seen corresponding path program 2 times [2025-02-06 04:39:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411322986] [2025-02-06 04:39:45,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:39:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:45,517 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:45,522 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 23 statements. [2025-02-06 04:39:45,522 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:39:45,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:45,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:45,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411322986] [2025-02-06 04:39:45,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411322986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:45,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:45,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:39:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001692483] [2025-02-06 04:39:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:45,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:39:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:45,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:39:45,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:39:45,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:39:45,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2025-02-06 04:39:45,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:45,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:39:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:46,071 INFO L124 PetriNetUnfolderBase]: 3201/4657 cut-off events. [2025-02-06 04:39:46,071 INFO L125 PetriNetUnfolderBase]: For 3504/3504 co-relation queries the response was YES. [2025-02-06 04:39:46,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13142 conditions, 4657 events. 3201/4657 cut-off events. For 3504/3504 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24168 event pairs, 327 based on Foata normal form. 13/4411 useless extension candidates. Maximal degree in co-relation 13119. Up to 1405 conditions per place. [2025-02-06 04:39:46,094 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 196 selfloop transitions, 23 changer transitions 0/221 dead transitions. [2025-02-06 04:39:46,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 221 transitions, 1373 flow [2025-02-06 04:39:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:39:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:39:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2025-02-06 04:39:46,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5316804407713499 [2025-02-06 04:39:46,096 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 178 flow. Second operand 11 states and 193 transitions. [2025-02-06 04:39:46,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 221 transitions, 1373 flow [2025-02-06 04:39:46,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 221 transitions, 1370 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:39:46,107 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 405 flow [2025-02-06 04:39:46,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=405, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2025-02-06 04:39:46,108 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2025-02-06 04:39:46,108 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 405 flow [2025-02-06 04:39:46,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2025-02-06 04:39:46,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:46,108 INFO L206 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] [2025-02-06 04:39:46,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:39:46,109 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)] === [2025-02-06 04:39:46,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1637086117, now seen corresponding path program 3 times [2025-02-06 04:39:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611047314] [2025-02-06 04:39:46,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:39:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:46,115 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:46,123 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:39:46,124 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:39:46,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:46,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:46,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611047314] [2025-02-06 04:39:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611047314] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:39:46,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274935796] [2025-02-06 04:39:46,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:39:46,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:39:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:39:46,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:39:46,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:39:46,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:46,279 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:39:46,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:39:46,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:46,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:39:46,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:39:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:46,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:39:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:46,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274935796] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:39:46,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:39:46,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2025-02-06 04:39:46,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422963773] [2025-02-06 04:39:46,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:46,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:39:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:46,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:39:46,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:39:46,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:39:46,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:39:46,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:46,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:39:46,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:46,943 INFO L124 PetriNetUnfolderBase]: 4339/6263 cut-off events. [2025-02-06 04:39:46,943 INFO L125 PetriNetUnfolderBase]: For 12931/13294 co-relation queries the response was YES. [2025-02-06 04:39:46,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22272 conditions, 6263 events. 4339/6263 cut-off events. For 12931/13294 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 32858 event pairs, 759 based on Foata normal form. 184/6442 useless extension candidates. Maximal degree in co-relation 22241. Up to 1980 conditions per place. [2025-02-06 04:39:46,975 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 40 changer transitions 0/168 dead transitions. [2025-02-06 04:39:46,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 168 transitions, 1272 flow [2025-02-06 04:39:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:39:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:39:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-06 04:39:46,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-02-06 04:39:46,977 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 405 flow. Second operand 9 states and 144 transitions. [2025-02-06 04:39:46,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 168 transitions, 1272 flow [2025-02-06 04:39:47,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 168 transitions, 1260 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:39:47,021 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 681 flow [2025-02-06 04:39:47,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=681, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2025-02-06 04:39:47,022 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2025-02-06 04:39:47,023 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 681 flow [2025-02-06 04:39:47,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:39:47,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:47,023 INFO L206 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] [2025-02-06 04:39:47,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:39:47,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:39:47,224 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)] === [2025-02-06 04:39:47,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1166765793, now seen corresponding path program 4 times [2025-02-06 04:39:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913886006] [2025-02-06 04:39:47,225 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:39:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:47,233 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:47,235 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-02-06 04:39:47,235 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:39:47,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:47,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:47,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913886006] [2025-02-06 04:39:47,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913886006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:47,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:47,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:39:47,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195361851] [2025-02-06 04:39:47,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:47,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:39:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:47,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:39:47,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:39:47,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:39:47,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 681 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2025-02-06 04:39:47,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:47,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:39:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:48,513 INFO L124 PetriNetUnfolderBase]: 8944/12548 cut-off events. [2025-02-06 04:39:48,514 INFO L125 PetriNetUnfolderBase]: For 50159/50159 co-relation queries the response was YES. [2025-02-06 04:39:48,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52961 conditions, 12548 events. 8944/12548 cut-off events. For 50159/50159 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 65772 event pairs, 958 based on Foata normal form. 24/12115 useless extension candidates. Maximal degree in co-relation 52923. Up to 3364 conditions per place. [2025-02-06 04:39:48,605 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 243 selfloop transitions, 162 changer transitions 0/406 dead transitions. [2025-02-06 04:39:48,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 406 transitions, 3914 flow [2025-02-06 04:39:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 04:39:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 04:39:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 269 transitions. [2025-02-06 04:39:48,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45286195286195285 [2025-02-06 04:39:48,607 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 681 flow. Second operand 18 states and 269 transitions. [2025-02-06 04:39:48,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 406 transitions, 3914 flow [2025-02-06 04:39:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 406 transitions, 3749 flow, removed 20 selfloop flow, removed 4 redundant places. [2025-02-06 04:39:48,812 INFO L231 Difference]: Finished difference. Result has 103 places, 223 transitions, 2598 flow [2025-02-06 04:39:48,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2598, PETRI_PLACES=103, PETRI_TRANSITIONS=223} [2025-02-06 04:39:48,812 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 68 predicate places. [2025-02-06 04:39:48,813 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 223 transitions, 2598 flow [2025-02-06 04:39:48,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2025-02-06 04:39:48,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:48,813 INFO L206 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] [2025-02-06 04:39:48,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:39:48,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:39:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2122204577, now seen corresponding path program 5 times [2025-02-06 04:39:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-02-06 04:39:48,814 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:39:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:48,819 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:48,824 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:39:48,824 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:39:48,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-02-06 04:39:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365810013] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:39:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194879076] [2025-02-06 04:39:48,903 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:39:48,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:39:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:39:48,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:39:48,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:39:48,953 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:48,967 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:39:48,967 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:39:48,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:48,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:39:48,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:39:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:49,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:39:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:49,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194879076] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:39:49,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:39:49,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2025-02-06 04:39:49,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21993626] [2025-02-06 04:39:49,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:39:49,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 04:39:49,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:49,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 04:39:49,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-02-06 04:39:49,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:39:49,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 223 transitions, 2598 flow. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 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) [2025-02-06 04:39:49,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:49,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:39:49,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:51,784 INFO L124 PetriNetUnfolderBase]: 15903/22433 cut-off events. [2025-02-06 04:39:51,784 INFO L125 PetriNetUnfolderBase]: For 163556/163556 co-relation queries the response was YES. [2025-02-06 04:39:51,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115271 conditions, 22433 events. 15903/22433 cut-off events. For 163556/163556 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 129219 event pairs, 1556 based on Foata normal form. 62/22494 useless extension candidates. Maximal degree in co-relation 115218. Up to 5067 conditions per place. [2025-02-06 04:39:51,974 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 419 selfloop transitions, 413 changer transitions 1/834 dead transitions. [2025-02-06 04:39:51,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 834 transitions, 9852 flow [2025-02-06 04:39:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 04:39:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-06 04:39:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 435 transitions. [2025-02-06 04:39:51,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-02-06 04:39:51,977 INFO L175 Difference]: Start difference. First operand has 103 places, 223 transitions, 2598 flow. Second operand 30 states and 435 transitions. [2025-02-06 04:39:51,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 834 transitions, 9852 flow [2025-02-06 04:39:53,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 834 transitions, 9576 flow, removed 138 selfloop flow, removed 0 redundant places. [2025-02-06 04:39:53,577 INFO L231 Difference]: Finished difference. Result has 141 places, 509 transitions, 7194 flow [2025-02-06 04:39:53,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7194, PETRI_PLACES=141, PETRI_TRANSITIONS=509} [2025-02-06 04:39:53,578 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 106 predicate places. [2025-02-06 04:39:53,578 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 509 transitions, 7194 flow [2025-02-06 04:39:53,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 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) [2025-02-06 04:39:53,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:39:53,578 INFO L206 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] [2025-02-06 04:39:53,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 04:39:53,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:39:53,779 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:39:53,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:39:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1623356617, now seen corresponding path program 6 times [2025-02-06 04:39:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:39:53,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543686640] [2025-02-06 04:39:53,780 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:39:53,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:39:53,789 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:39:53,794 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 22 of 23 statements. [2025-02-06 04:39:53,795 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:39:53,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:39:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:39:53,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:39:53,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543686640] [2025-02-06 04:39:53,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543686640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:39:53,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:39:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:39:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133502037] [2025-02-06 04:39:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:39:53,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:39:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:39:53,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:39:53,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:39:53,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:39:53,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 509 transitions, 7194 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-02-06 04:39:53,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:39:53,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:39:53,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:39:56,974 INFO L124 PetriNetUnfolderBase]: 19750/27758 cut-off events. [2025-02-06 04:39:56,974 INFO L125 PetriNetUnfolderBase]: For 264777/264777 co-relation queries the response was YES. [2025-02-06 04:39:57,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157140 conditions, 27758 events. 19750/27758 cut-off events. For 264777/264777 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 165309 event pairs, 5136 based on Foata normal form. 16/27774 useless extension candidates. Maximal degree in co-relation 157074. Up to 17364 conditions per place. [2025-02-06 04:39:57,248 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 891 selfloop transitions, 254 changer transitions 0/1146 dead transitions. [2025-02-06 04:39:57,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1146 transitions, 17944 flow [2025-02-06 04:39:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:39:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:39:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2025-02-06 04:39:57,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2025-02-06 04:39:57,250 INFO L175 Difference]: Start difference. First operand has 141 places, 509 transitions, 7194 flow. Second operand 12 states and 210 transitions. [2025-02-06 04:39:57,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1146 transitions, 17944 flow [2025-02-06 04:40:01,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 1146 transitions, 16721 flow, removed 550 selfloop flow, removed 3 redundant places. [2025-02-06 04:40:01,040 INFO L231 Difference]: Finished difference. Result has 158 places, 708 transitions, 10697 flow [2025-02-06 04:40:01,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6733, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10697, PETRI_PLACES=158, PETRI_TRANSITIONS=708} [2025-02-06 04:40:01,040 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 123 predicate places. [2025-02-06 04:40:01,040 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 708 transitions, 10697 flow [2025-02-06 04:40:01,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-02-06 04:40:01,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:01,041 INFO L206 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] [2025-02-06 04:40:01,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:40:01,041 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:40:01,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -582138042, now seen corresponding path program 1 times [2025-02-06 04:40:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480648766] [2025-02-06 04:40:01,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:01,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:01,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:01,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:01,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:40:01,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480648766] [2025-02-06 04:40:01,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480648766] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073444720] [2025-02-06 04:40:01,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:01,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:01,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:40:01,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:40:01,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:01,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:01,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:01,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:01,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:40:01,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:40:01,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:40:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073444720] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:01,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:40:01,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2025-02-06 04:40:01,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702464887] [2025-02-06 04:40:01,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:01,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:40:01,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:01,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:40:01,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:40:01,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:40:01,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 708 transitions, 10697 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) [2025-02-06 04:40:01,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:01,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:40:01,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:04,320 INFO L124 PetriNetUnfolderBase]: 15765/22593 cut-off events. [2025-02-06 04:40:04,320 INFO L125 PetriNetUnfolderBase]: For 273879/276394 co-relation queries the response was YES. [2025-02-06 04:40:04,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133555 conditions, 22593 events. 15765/22593 cut-off events. For 273879/276394 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 142636 event pairs, 3076 based on Foata normal form. 1152/23184 useless extension candidates. Maximal degree in co-relation 133482. Up to 11223 conditions per place. [2025-02-06 04:40:04,550 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 693 selfloop transitions, 43 changer transitions 0/874 dead transitions. [2025-02-06 04:40:04,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 874 transitions, 14979 flow [2025-02-06 04:40:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:40:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:40:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-02-06 04:40:04,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-02-06 04:40:04,551 INFO L175 Difference]: Start difference. First operand has 158 places, 708 transitions, 10697 flow. Second operand 5 states and 72 transitions. [2025-02-06 04:40:04,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 874 transitions, 14979 flow [2025-02-06 04:40:06,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 874 transitions, 14773 flow, removed 90 selfloop flow, removed 1 redundant places. [2025-02-06 04:40:06,749 INFO L231 Difference]: Finished difference. Result has 161 places, 683 transitions, 10306 flow [2025-02-06 04:40:06,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10220, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10306, PETRI_PLACES=161, PETRI_TRANSITIONS=683} [2025-02-06 04:40:06,750 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 126 predicate places. [2025-02-06 04:40:06,750 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 683 transitions, 10306 flow [2025-02-06 04:40:06,750 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) [2025-02-06 04:40:06,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:06,750 INFO L206 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] [2025-02-06 04:40:06,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:40:06,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 04:40:06,951 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:40:06,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1545178559, now seen corresponding path program 7 times [2025-02-06 04:40:06,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:06,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909498700] [2025-02-06 04:40:06,951 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:40:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:06,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:06,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:06,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:06,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:07,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:07,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909498700] [2025-02-06 04:40:07,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909498700] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:07,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735967485] [2025-02-06 04:40:07,044 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:40:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:07,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:40:07,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:40:07,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:07,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:07,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:07,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:07,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:40:07,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:07,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735967485] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:40:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2025-02-06 04:40:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695226727] [2025-02-06 04:40:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:07,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:40:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:07,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:40:07,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:40:07,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:40:07,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 683 transitions, 10306 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:40:07,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:07,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:40:07,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:10,793 INFO L124 PetriNetUnfolderBase]: 18488/26249 cut-off events. [2025-02-06 04:40:10,793 INFO L125 PetriNetUnfolderBase]: For 275798/276927 co-relation queries the response was YES. [2025-02-06 04:40:10,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153807 conditions, 26249 events. 18488/26249 cut-off events. For 275798/276927 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 161818 event pairs, 2604 based on Foata normal form. 421/26513 useless extension candidates. Maximal degree in co-relation 153731. Up to 9185 conditions per place. [2025-02-06 04:40:11,001 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 636 selfloop transitions, 386 changer transitions 0/1031 dead transitions. [2025-02-06 04:40:11,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1031 transitions, 16933 flow [2025-02-06 04:40:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:40:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:40:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2025-02-06 04:40:11,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-02-06 04:40:11,002 INFO L175 Difference]: Start difference. First operand has 161 places, 683 transitions, 10306 flow. Second operand 9 states and 143 transitions. [2025-02-06 04:40:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 1031 transitions, 16933 flow [2025-02-06 04:40:14,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1031 transitions, 16831 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-06 04:40:14,377 INFO L231 Difference]: Finished difference. Result has 170 places, 809 transitions, 13831 flow [2025-02-06 04:40:14,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10250, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13831, PETRI_PLACES=170, PETRI_TRANSITIONS=809} [2025-02-06 04:40:14,378 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2025-02-06 04:40:14,378 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 809 transitions, 13831 flow [2025-02-06 04:40:14,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:40:14,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:14,379 INFO L206 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] [2025-02-06 04:40:14,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 04:40:14,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 04:40:14,579 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:40:14,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1096939565, now seen corresponding path program 8 times [2025-02-06 04:40:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:14,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-02-06 04:40:14,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:40:14,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:14,585 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:14,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 23 statements. [2025-02-06 04:40:14,589 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:40:14,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:14,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-02-06 04:40:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607324875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:40:14,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:40:14,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:40:14,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286771434] [2025-02-06 04:40:14,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:14,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:40:14,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:14,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:40:14,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:40:14,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:40:14,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 809 transitions, 13831 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-02-06 04:40:14,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:14,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:40:14,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:19,096 INFO L124 PetriNetUnfolderBase]: 21421/30001 cut-off events. [2025-02-06 04:40:19,096 INFO L125 PetriNetUnfolderBase]: For 406304/406304 co-relation queries the response was YES. [2025-02-06 04:40:19,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188380 conditions, 30001 events. 21421/30001 cut-off events. For 406304/406304 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 180247 event pairs, 2263 based on Foata normal form. 28/30029 useless extension candidates. Maximal degree in co-relation 188299. Up to 13092 conditions per place. [2025-02-06 04:40:19,589 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 1138 selfloop transitions, 337 changer transitions 0/1476 dead transitions. [2025-02-06 04:40:19,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1476 transitions, 26995 flow [2025-02-06 04:40:19,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:40:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:40:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 219 transitions. [2025-02-06 04:40:19,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2025-02-06 04:40:19,590 INFO L175 Difference]: Start difference. First operand has 170 places, 809 transitions, 13831 flow. Second operand 13 states and 219 transitions. [2025-02-06 04:40:19,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1476 transitions, 26995 flow [2025-02-06 04:40:24,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1476 transitions, 26642 flow, removed 175 selfloop flow, removed 2 redundant places. [2025-02-06 04:40:24,382 INFO L231 Difference]: Finished difference. Result has 188 places, 902 transitions, 16761 flow [2025-02-06 04:40:24,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=13696, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16761, PETRI_PLACES=188, PETRI_TRANSITIONS=902} [2025-02-06 04:40:24,383 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 153 predicate places. [2025-02-06 04:40:24,384 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 902 transitions, 16761 flow [2025-02-06 04:40:24,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-02-06 04:40:24,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:24,384 INFO L206 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] [2025-02-06 04:40:24,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:40:24,384 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:40:24,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 601447453, now seen corresponding path program 9 times [2025-02-06 04:40:24,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:24,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679607990] [2025-02-06 04:40:24,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:40:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:24,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:24,395 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:24,395 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:40:24,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679607990] [2025-02-06 04:40:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679607990] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649537126] [2025-02-06 04:40:24,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:40:24,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:24,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:40:24,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:40:24,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:24,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:24,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:40:24,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:24,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:40:24,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:24,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:24,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649537126] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:24,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:40:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2025-02-06 04:40:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312479848] [2025-02-06 04:40:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:24,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:40:24,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:24,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:40:24,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:40:24,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:40:24,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 902 transitions, 16761 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:40:24,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:24,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:40:24,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:29,939 INFO L124 PetriNetUnfolderBase]: 19115/27267 cut-off events. [2025-02-06 04:40:29,939 INFO L125 PetriNetUnfolderBase]: For 403508/404571 co-relation queries the response was YES. [2025-02-06 04:40:30,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176401 conditions, 27267 events. 19115/27267 cut-off events. For 403508/404571 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 170276 event pairs, 1929 based on Foata normal form. 402/27512 useless extension candidates. Maximal degree in co-relation 176313. Up to 11878 conditions per place. [2025-02-06 04:40:30,271 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 426 selfloop transitions, 604 changer transitions 0/1039 dead transitions. [2025-02-06 04:40:30,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1039 transitions, 20569 flow [2025-02-06 04:40:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:40:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:40:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-02-06 04:40:30,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-02-06 04:40:30,273 INFO L175 Difference]: Start difference. First operand has 188 places, 902 transitions, 16761 flow. Second operand 8 states and 123 transitions. [2025-02-06 04:40:30,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1039 transitions, 20569 flow [2025-02-06 04:40:34,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 1039 transitions, 20405 flow, removed 48 selfloop flow, removed 2 redundant places. [2025-02-06 04:40:34,604 INFO L231 Difference]: Finished difference. Result has 196 places, 947 transitions, 19556 flow [2025-02-06 04:40:34,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=16617, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19556, PETRI_PLACES=196, PETRI_TRANSITIONS=947} [2025-02-06 04:40:34,605 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 161 predicate places. [2025-02-06 04:40:34,605 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 947 transitions, 19556 flow [2025-02-06 04:40:34,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2025-02-06 04:40:34,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:34,605 INFO L206 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] [2025-02-06 04:40:34,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:40:34,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 04:40:34,805 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:40:34,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1623394721, now seen corresponding path program 10 times [2025-02-06 04:40:34,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460303842] [2025-02-06 04:40:34,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:40:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:34,810 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:34,814 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-02-06 04:40:34,814 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:40:34,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460303842] [2025-02-06 04:40:34,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460303842] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542614383] [2025-02-06 04:40:34,850 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:40:34,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:34,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:34,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:40:34,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:40:34,892 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:34,901 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-02-06 04:40:34,901 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:40:34,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:34,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:40:34,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:34,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542614383] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:40:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 12 [2025-02-06 04:40:34,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341419037] [2025-02-06 04:40:34,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:34,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:40:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:34,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:40:34,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:40:34,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:40:34,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 947 transitions, 19556 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2025-02-06 04:40:34,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:34,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:40:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:40,719 INFO L124 PetriNetUnfolderBase]: 22584/31940 cut-off events. [2025-02-06 04:40:40,720 INFO L125 PetriNetUnfolderBase]: For 559386/559386 co-relation queries the response was YES. [2025-02-06 04:40:41,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220941 conditions, 31940 events. 22584/31940 cut-off events. For 559386/559386 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 195767 event pairs, 3144 based on Foata normal form. 22/31962 useless extension candidates. Maximal degree in co-relation 220848. Up to 7529 conditions per place. [2025-02-06 04:40:41,182 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 627 selfloop transitions, 622 changer transitions 0/1250 dead transitions. [2025-02-06 04:40:41,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1250 transitions, 26826 flow [2025-02-06 04:40:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:40:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:40:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 186 transitions. [2025-02-06 04:40:41,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2025-02-06 04:40:41,184 INFO L175 Difference]: Start difference. First operand has 196 places, 947 transitions, 19556 flow. Second operand 13 states and 186 transitions. [2025-02-06 04:40:41,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1250 transitions, 26826 flow [2025-02-06 04:40:47,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1250 transitions, 26483 flow, removed 58 selfloop flow, removed 3 redundant places. [2025-02-06 04:40:47,285 INFO L231 Difference]: Finished difference. Result has 211 places, 1105 transitions, 23792 flow [2025-02-06 04:40:47,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=19290, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=469, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23792, PETRI_PLACES=211, PETRI_TRANSITIONS=1105} [2025-02-06 04:40:47,286 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 176 predicate places. [2025-02-06 04:40:47,286 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 1105 transitions, 23792 flow [2025-02-06 04:40:47,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2025-02-06 04:40:47,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:47,286 INFO L206 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] [2025-02-06 04:40:47,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 04:40:47,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:47,487 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:40:47,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1432136681, now seen corresponding path program 11 times [2025-02-06 04:40:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741519331] [2025-02-06 04:40:47,487 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:40:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:47,491 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:47,495 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:47,495 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:40:47,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741519331] [2025-02-06 04:40:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741519331] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893345406] [2025-02-06 04:40:47,541 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:40:47,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:47,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:47,543 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:40:47,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:40:47,585 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:40:47,599 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:47,599 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:40:47,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:47,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:40:47,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:47,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:47,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893345406] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:40:47,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:40:47,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-02-06 04:40:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434106769] [2025-02-06 04:40:47,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:40:47,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:40:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:47,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:40:47,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:40:47,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2025-02-06 04:40:47,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 1105 transitions, 23792 flow. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 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) [2025-02-06 04:40:47,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:47,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2025-02-06 04:40:47,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:54,626 INFO L124 PetriNetUnfolderBase]: 22700/32137 cut-off events. [2025-02-06 04:40:54,626 INFO L125 PetriNetUnfolderBase]: For 641523/641523 co-relation queries the response was YES. [2025-02-06 04:40:55,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231944 conditions, 32137 events. 22700/32137 cut-off events. For 641523/641523 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 197145 event pairs, 2039 based on Foata normal form. 69/32206 useless extension candidates. Maximal degree in co-relation 231847. Up to 7622 conditions per place. [2025-02-06 04:40:55,428 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 903 changer transitions 0/1317 dead transitions. [2025-02-06 04:40:55,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 1317 transitions, 29075 flow [2025-02-06 04:40:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 04:40:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 04:40:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 269 transitions. [2025-02-06 04:40:55,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37052341597796146 [2025-02-06 04:40:55,430 INFO L175 Difference]: Start difference. First operand has 211 places, 1105 transitions, 23792 flow. Second operand 22 states and 269 transitions. [2025-02-06 04:40:55,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 1317 transitions, 29075 flow