./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:44:29,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:44:29,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:44:29,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:44:29,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:44:29,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:44:29,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:44:29,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:44:29,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:44:29,558 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:44:29,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:44:29,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:44:29,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:44:29,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:44:29,559 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:44:29,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:44:29,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:44:29,561 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:44:29,561 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:44:29,561 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:44:29,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:44:29,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:44:29,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:44:29,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:44:29,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:44:29,562 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/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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2025-03-14 00:44:29,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:44:29,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:44:29,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:44:29,797 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:44:29,797 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:44:29,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2025-03-14 00:44:31,014 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91943774c/67b11211cb1e4b34b20a6cd305a48e46/FLAG3e89b6bfb [2025-03-14 00:44:31,271 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:44:31,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2025-03-14 00:44:31,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91943774c/67b11211cb1e4b34b20a6cd305a48e46/FLAG3e89b6bfb [2025-03-14 00:44:31,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91943774c/67b11211cb1e4b34b20a6cd305a48e46 [2025-03-14 00:44:31,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:44:31,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:44:31,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:44:31,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:44:31,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:44:31,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:44:31" (1/1) ... [2025-03-14 00:44:31,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f322d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:31, skipping insertion in model container [2025-03-14 00:44:31,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:44:31" (1/1) ... [2025-03-14 00:44:31,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:44:31,864 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2025-03-14 00:44:31,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:44:31,912 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:44:31,949 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2025-03-14 00:44:31,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:44:32,038 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:44:32,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32 WrapperNode [2025-03-14 00:44:32,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:44:32,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:44:32,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:44:32,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:44:32,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,116 INFO L138 Inliner]: procedures = 277, calls = 430, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 539 [2025-03-14 00:44:32,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:44:32,117 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:44:32,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:44:32,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:44:32,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,156 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2025-03-14 00:44:32,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,172 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:44:32,191 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:44:32,191 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:44:32,191 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:44:32,193 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (1/1) ... [2025-03-14 00:44:32,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:44:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:32,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 00:44:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 00:44:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-14 00:44:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-14 00:44:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-14 00:44:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-14 00:44:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-14 00:44:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-14 00:44:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:44:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:44:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 00:44:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-14 00:44:32,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:44:32,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:44:32,242 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:44:32,339 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:44:32,341 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:44:32,954 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2025-03-14 00:44:32,954 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem37#1; [2025-03-14 00:44:32,954 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret36#1; [2025-03-14 00:44:32,955 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:44:32,956 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:44:32,956 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:44:36,218 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:44:36,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:44:36 BoogieIcfgContainer [2025-03-14 00:44:36,220 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:44:36,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:44:36,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:44:36,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:44:36,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:44:31" (1/3) ... [2025-03-14 00:44:36,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24466cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:44:36, skipping insertion in model container [2025-03-14 00:44:36,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:32" (2/3) ... [2025-03-14 00:44:36,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24466cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:44:36, skipping insertion in model container [2025-03-14 00:44:36,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:44:36" (3/3) ... [2025-03-14 00:44:36,228 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2025-03-14 00:44:36,241 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:44:36,243 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 30 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-14 00:44:36,243 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:44:36,296 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-14 00:44:36,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 82 flow [2025-03-14 00:44:36,360 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2025-03-14 00:44:36,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 00:44:36,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 5/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2025-03-14 00:44:36,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 82 flow [2025-03-14 00:44:36,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 69 flow [2025-03-14 00:44:36,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:44:36,389 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;@250e650a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:44:36,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-14 00:44:36,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:44:36,405 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-03-14 00:44:36,405 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 00:44:36,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:36,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:36,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:36,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash -591730256, now seen corresponding path program 1 times [2025-03-14 00:44:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134743008] [2025-03-14 00:44:36,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:36,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-14 00:44:36,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-14 00:44:36,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:36,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:36,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:36,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134743008] [2025-03-14 00:44:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134743008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:44:36,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:44:36,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:44:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962348813] [2025-03-14 00:44:36,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:44:36,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 00:44:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:36,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 00:44:36,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 00:44:37,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-03-14 00:44:37,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-03-14 00:44:37,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:37,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-03-14 00:44:37,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:37,218 INFO L124 PetriNetUnfolderBase]: 307/564 cut-off events. [2025-03-14 00:44:37,220 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-03-14 00:44:37,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 564 events. 307/564 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2467 event pairs, 53 based on Foata normal form. 40/558 useless extension candidates. Maximal degree in co-relation 1043. Up to 358 conditions per place. [2025-03-14 00:44:37,228 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 3 changer transitions 2/52 dead transitions. [2025-03-14 00:44:37,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 214 flow [2025-03-14 00:44:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 00:44:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 00:44:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-03-14 00:44:37,241 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2025-03-14 00:44:37,242 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 4 states and 83 transitions. [2025-03-14 00:44:37,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 214 flow [2025-03-14 00:44:37,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 52 transitions, 205 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 00:44:37,251 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 82 flow [2025-03-14 00:44:37,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2025-03-14 00:44:37,256 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2025-03-14 00:44:37,256 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 82 flow [2025-03-14 00:44:37,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-03-14 00:44:37,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:37,257 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:37,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:44:37,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:37,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:37,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2097533675, now seen corresponding path program 1 times [2025-03-14 00:44:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:37,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894362716] [2025-03-14 00:44:37,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:37,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 00:44:37,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 00:44:37,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:37,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894362716] [2025-03-14 00:44:37,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894362716] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:37,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971761285] [2025-03-14 00:44:37,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:37,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:37,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:37,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:44:37,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 00:44:37,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 00:44:37,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 00:44:37,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:37,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:37,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-14 00:44:37,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:44:38,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:38,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:44:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971761285] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:44:38,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:44:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-14 00:44:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051623586] [2025-03-14 00:44:38,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:44:38,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-14 00:44:38,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:38,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-14 00:44:38,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-14 00:44:38,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:44:38,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 82 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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) [2025-03-14 00:44:38,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:38,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:44:38,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:38,730 INFO L124 PetriNetUnfolderBase]: 1257/2332 cut-off events. [2025-03-14 00:44:38,730 INFO L125 PetriNetUnfolderBase]: For 297/299 co-relation queries the response was YES. [2025-03-14 00:44:38,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 2332 events. 1257/2332 cut-off events. For 297/299 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12417 event pairs, 153 based on Foata normal form. 48/2272 useless extension candidates. Maximal degree in co-relation 4362. Up to 365 conditions per place. [2025-03-14 00:44:38,750 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 163 selfloop transitions, 32 changer transitions 4/204 dead transitions. [2025-03-14 00:44:38,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 204 transitions, 900 flow [2025-03-14 00:44:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-14 00:44:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-14 00:44:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 313 transitions. [2025-03-14 00:44:38,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6137254901960785 [2025-03-14 00:44:38,754 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 82 flow. Second operand 15 states and 313 transitions. [2025-03-14 00:44:38,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 204 transitions, 900 flow [2025-03-14 00:44:38,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 204 transitions, 896 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 00:44:38,760 INFO L231 Difference]: Finished difference. Result has 54 places, 66 transitions, 329 flow [2025-03-14 00:44:38,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=54, PETRI_TRANSITIONS=66} [2025-03-14 00:44:38,762 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2025-03-14 00:44:38,762 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 66 transitions, 329 flow [2025-03-14 00:44:38,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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) [2025-03-14 00:44:38,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:38,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:38,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 00:44:38,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:38,963 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:38,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -728456380, now seen corresponding path program 1 times [2025-03-14 00:44:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785432288] [2025-03-14 00:44:38,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:38,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-14 00:44:38,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-14 00:44:38,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:38,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785432288] [2025-03-14 00:44:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785432288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:44:39,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:44:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:44:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726023188] [2025-03-14 00:44:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:44:39,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:44:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:39,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:44:39,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:44:39,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-03-14 00:44:39,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 66 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-14 00:44:39,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:39,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-03-14 00:44:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:39,318 INFO L124 PetriNetUnfolderBase]: 669/1351 cut-off events. [2025-03-14 00:44:39,318 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2025-03-14 00:44:39,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 1351 events. 669/1351 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6861 event pairs, 231 based on Foata normal form. 66/1398 useless extension candidates. Maximal degree in co-relation 2914. Up to 634 conditions per place. [2025-03-14 00:44:39,329 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 43 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2025-03-14 00:44:39,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 339 flow [2025-03-14 00:44:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:44:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:44:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-03-14 00:44:39,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2025-03-14 00:44:39,330 INFO L175 Difference]: Start difference. First operand has 54 places, 66 transitions, 329 flow. Second operand 3 states and 58 transitions. [2025-03-14 00:44:39,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 339 flow [2025-03-14 00:44:39,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 307 flow, removed 16 selfloop flow, removed 3 redundant places. [2025-03-14 00:44:39,338 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 198 flow [2025-03-14 00:44:39,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2025-03-14 00:44:39,339 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2025-03-14 00:44:39,340 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 198 flow [2025-03-14 00:44:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-14 00:44:39,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:39,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:39,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:44:39,340 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:39,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1583035145, now seen corresponding path program 1 times [2025-03-14 00:44:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:39,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628242004] [2025-03-14 00:44:39,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:39,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-14 00:44:39,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-14 00:44:39,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:39,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:40,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:40,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628242004] [2025-03-14 00:44:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628242004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:44:40,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:44:40,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:44:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384468634] [2025-03-14 00:44:40,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:44:40,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:44:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:40,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:44:40,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:44:40,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2025-03-14 00:44:40,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-03-14 00:44:40,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:40,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2025-03-14 00:44:40,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:40,569 INFO L124 PetriNetUnfolderBase]: 833/1677 cut-off events. [2025-03-14 00:44:40,569 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2025-03-14 00:44:40,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 1677 events. 833/1677 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8757 event pairs, 255 based on Foata normal form. 0/1652 useless extension candidates. Maximal degree in co-relation 3447. Up to 977 conditions per place. [2025-03-14 00:44:40,578 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 58 selfloop transitions, 7 changer transitions 5/82 dead transitions. [2025-03-14 00:44:40,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 438 flow [2025-03-14 00:44:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 00:44:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 00:44:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2025-03-14 00:44:40,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2025-03-14 00:44:40,580 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 198 flow. Second operand 5 states and 96 transitions. [2025-03-14 00:44:40,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 438 flow [2025-03-14 00:44:40,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 00:44:40,584 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 251 flow [2025-03-14 00:44:40,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2025-03-14 00:44:40,584 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2025-03-14 00:44:40,584 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 251 flow [2025-03-14 00:44:40,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-03-14 00:44:40,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:40,585 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:40,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:44:40,585 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash -612990826, now seen corresponding path program 1 times [2025-03-14 00:44:40,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:40,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332986592] [2025-03-14 00:44:40,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:40,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 00:44:40,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 00:44:40,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:40,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:41,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332986592] [2025-03-14 00:44:41,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332986592] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412727023] [2025-03-14 00:44:41,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:41,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:41,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:44:41,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 00:44:41,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 00:44:41,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 00:44:41,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:41,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:41,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-14 00:44:41,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:44:41,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:41,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2025-03-14 00:44:41,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2025-03-14 00:44:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:41,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:44:42,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2025-03-14 00:44:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:42,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412727023] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:44:42,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:44:42,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-14 00:44:42,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417085388] [2025-03-14 00:44:42,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:44:42,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 00:44:42,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:42,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 00:44:42,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2025-03-14 00:44:42,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:44:42,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 251 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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) [2025-03-14 00:44:42,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:42,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:44:42,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:43,430 INFO L124 PetriNetUnfolderBase]: 2541/5000 cut-off events. [2025-03-14 00:44:43,431 INFO L125 PetriNetUnfolderBase]: For 2193/2193 co-relation queries the response was YES. [2025-03-14 00:44:43,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 5000 events. 2541/5000 cut-off events. For 2193/2193 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 31322 event pairs, 382 based on Foata normal form. 0/4895 useless extension candidates. Maximal degree in co-relation 10190. Up to 818 conditions per place. [2025-03-14 00:44:43,462 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 287 selfloop transitions, 79 changer transitions 38/409 dead transitions. [2025-03-14 00:44:43,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 409 transitions, 2189 flow [2025-03-14 00:44:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-14 00:44:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-14 00:44:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 621 transitions. [2025-03-14 00:44:43,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53719723183391 [2025-03-14 00:44:43,465 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 251 flow. Second operand 34 states and 621 transitions. [2025-03-14 00:44:43,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 409 transitions, 2189 flow [2025-03-14 00:44:43,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 409 transitions, 2181 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-14 00:44:43,482 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 750 flow [2025-03-14 00:44:43,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=750, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2025-03-14 00:44:43,483 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2025-03-14 00:44:43,483 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 750 flow [2025-03-14 00:44:43,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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) [2025-03-14 00:44:43,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:43,484 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:43,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 00:44:43,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:43,685 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:43,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1459006495, now seen corresponding path program 1 times [2025-03-14 00:44:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:43,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628445524] [2025-03-14 00:44:43,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:43,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:43,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 00:44:43,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 00:44:43,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:43,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628445524] [2025-03-14 00:44:43,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628445524] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675043577] [2025-03-14 00:44:43,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:43,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:43,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:43,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:44:43,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 00:44:43,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 00:44:44,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 00:44:44,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:44,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:44,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 00:44:44,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:44:44,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:44,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:44,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:44:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 00:44:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675043577] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:44,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 00:44:44,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2025-03-14 00:44:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594904230] [2025-03-14 00:44:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:44:44,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:44:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:44,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:44:44,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-14 00:44:44,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:44:44,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 750 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-14 00:44:44,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:44,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:44:44,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:44,932 INFO L124 PetriNetUnfolderBase]: 2948/5856 cut-off events. [2025-03-14 00:44:44,932 INFO L125 PetriNetUnfolderBase]: For 5365/5365 co-relation queries the response was YES. [2025-03-14 00:44:44,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13939 conditions, 5856 events. 2948/5856 cut-off events. For 5365/5365 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 38723 event pairs, 840 based on Foata normal form. 24/5838 useless extension candidates. Maximal degree in co-relation 13539. Up to 1924 conditions per place. [2025-03-14 00:44:44,961 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 87 selfloop transitions, 73 changer transitions 2/167 dead transitions. [2025-03-14 00:44:44,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 1285 flow [2025-03-14 00:44:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:44:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:44:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2025-03-14 00:44:44,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2025-03-14 00:44:44,962 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 750 flow. Second operand 6 states and 112 transitions. [2025-03-14 00:44:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 1285 flow [2025-03-14 00:44:44,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 167 transitions, 1223 flow, removed 31 selfloop flow, removed 0 redundant places. [2025-03-14 00:44:44,980 INFO L231 Difference]: Finished difference. Result has 101 places, 130 transitions, 1005 flow [2025-03-14 00:44:44,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1005, PETRI_PLACES=101, PETRI_TRANSITIONS=130} [2025-03-14 00:44:44,981 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2025-03-14 00:44:44,981 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 130 transitions, 1005 flow [2025-03-14 00:44:44,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-14 00:44:44,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:44,982 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:44,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-14 00:44:45,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:45,182 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:45,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2128265606, now seen corresponding path program 1 times [2025-03-14 00:44:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:45,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293023269] [2025-03-14 00:44:45,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:45,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-14 00:44:45,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 00:44:45,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:45,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:45,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293023269] [2025-03-14 00:44:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293023269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286602934] [2025-03-14 00:44:45,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:45,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:45,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:45,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:44:45,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 00:44:46,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-14 00:44:46,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 00:44:46,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:46,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:46,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-14 00:44:46,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:44:46,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-14 00:44:46,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2025-03-14 00:44:46,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2025-03-14 00:44:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:46,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:44:46,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 00:44:46,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14 [2025-03-14 00:44:46,820 INFO L349 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2025-03-14 00:44:46,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 65 [2025-03-14 00:44:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:46,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286602934] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:44:46,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:44:46,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-14 00:44:46,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713937399] [2025-03-14 00:44:46,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:44:46,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-14 00:44:46,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:46,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-14 00:44:46,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2025-03-14 00:44:46,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:44:46,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 130 transitions, 1005 flow. Second operand has 17 states, 17 states have (on average 11.058823529411764) internal successors, (188), 17 states have internal predecessors, (188), 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) [2025-03-14 00:44:46,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:46,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:44:46,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:49,419 INFO L124 PetriNetUnfolderBase]: 5814/11472 cut-off events. [2025-03-14 00:44:49,419 INFO L125 PetriNetUnfolderBase]: For 16875/16875 co-relation queries the response was YES. [2025-03-14 00:44:49,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28587 conditions, 11472 events. 5814/11472 cut-off events. For 16875/16875 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 79577 event pairs, 909 based on Foata normal form. 91/11521 useless extension candidates. Maximal degree in co-relation 27752. Up to 1910 conditions per place. [2025-03-14 00:44:49,508 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 293 selfloop transitions, 187 changer transitions 54/539 dead transitions. [2025-03-14 00:44:49,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 539 transitions, 3930 flow [2025-03-14 00:44:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-14 00:44:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-14 00:44:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 616 transitions. [2025-03-14 00:44:49,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532871972318339 [2025-03-14 00:44:49,511 INFO L175 Difference]: Start difference. First operand has 101 places, 130 transitions, 1005 flow. Second operand 34 states and 616 transitions. [2025-03-14 00:44:49,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 539 transitions, 3930 flow [2025-03-14 00:44:49,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 539 transitions, 3820 flow, removed 32 selfloop flow, removed 1 redundant places. [2025-03-14 00:44:49,571 INFO L231 Difference]: Finished difference. Result has 142 places, 237 transitions, 2367 flow [2025-03-14 00:44:49,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2367, PETRI_PLACES=142, PETRI_TRANSITIONS=237} [2025-03-14 00:44:49,574 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2025-03-14 00:44:49,574 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 237 transitions, 2367 flow [2025-03-14 00:44:49,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.058823529411764) internal successors, (188), 17 states have internal predecessors, (188), 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) [2025-03-14 00:44:49,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:49,575 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-14 00:44:49,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-14 00:44:49,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:49,775 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:49,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash 272416028, now seen corresponding path program 2 times [2025-03-14 00:44:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:49,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710074359] [2025-03-14 00:44:49,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:44:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:49,796 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-03-14 00:44:49,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-03-14 00:44:49,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:44:49,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:50,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:50,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710074359] [2025-03-14 00:44:50,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710074359] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:50,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033940383] [2025-03-14 00:44:50,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:44:50,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:50,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:50,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:44:50,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 00:44:50,137 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-03-14 00:44:50,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-03-14 00:44:50,229 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:44:50,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:50,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-14 00:44:50,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:44:50,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:50,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:50,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:50,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:44:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:50,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:44:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033940383] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:44:50,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:44:50,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 27 [2025-03-14 00:44:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052568847] [2025-03-14 00:44:50,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:44:50,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-14 00:44:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:50,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-14 00:44:50,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2025-03-14 00:44:50,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:44:50,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 237 transitions, 2367 flow. Second operand has 28 states, 28 states have (on average 9.785714285714286) internal successors, (274), 28 states have internal predecessors, (274), 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) [2025-03-14 00:44:50,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:50,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:44:50,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:54,056 INFO L124 PetriNetUnfolderBase]: 13105/25616 cut-off events. [2025-03-14 00:44:54,056 INFO L125 PetriNetUnfolderBase]: For 66523/66523 co-relation queries the response was YES. [2025-03-14 00:44:54,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70341 conditions, 25616 events. 13105/25616 cut-off events. For 66523/66523 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 198728 event pairs, 2468 based on Foata normal form. 320/25929 useless extension candidates. Maximal degree in co-relation 68391. Up to 4248 conditions per place. [2025-03-14 00:44:54,285 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 577 selfloop transitions, 467 changer transitions 20/1069 dead transitions. [2025-03-14 00:44:54,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1069 transitions, 9780 flow [2025-03-14 00:44:54,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-03-14 00:44:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2025-03-14 00:44:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1074 transitions. [2025-03-14 00:44:54,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2025-03-14 00:44:54,290 INFO L175 Difference]: Start difference. First operand has 142 places, 237 transitions, 2367 flow. Second operand 60 states and 1074 transitions. [2025-03-14 00:44:54,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1069 transitions, 9780 flow [2025-03-14 00:44:54,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1069 transitions, 9488 flow, removed 139 selfloop flow, removed 5 redundant places. [2025-03-14 00:44:54,612 INFO L231 Difference]: Finished difference. Result has 212 places, 554 transitions, 6757 flow [2025-03-14 00:44:54,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=6757, PETRI_PLACES=212, PETRI_TRANSITIONS=554} [2025-03-14 00:44:54,613 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2025-03-14 00:44:54,613 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 554 transitions, 6757 flow [2025-03-14 00:44:54,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.785714285714286) internal successors, (274), 28 states have internal predecessors, (274), 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) [2025-03-14 00:44:54,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:54,613 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:54,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-14 00:44:54,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:54,814 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:44:54,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2116565717, now seen corresponding path program 2 times [2025-03-14 00:44:54,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:54,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346812940] [2025-03-14 00:44:54,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:44:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:54,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-14 00:44:54,874 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-14 00:44:54,875 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:44:54,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:56,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:56,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346812940] [2025-03-14 00:44:56,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346812940] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:44:56,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086842893] [2025-03-14 00:44:56,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:44:56,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:44:56,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:56,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:44:56,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 00:44:56,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-14 00:44:56,190 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-14 00:44:56,190 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:44:56,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:56,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-14 00:44:56,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:44:56,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-14 00:44:56,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2025-03-14 00:44:56,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2025-03-14 00:44:56,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2025-03-14 00:44:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:56,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:44:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:56,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086842893] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:44:56,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:44:56,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2025-03-14 00:44:56,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354812577] [2025-03-14 00:44:56,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:44:56,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-14 00:44:56,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:56,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-14 00:44:57,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2025-03-14 00:44:57,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:44:57,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 554 transitions, 6757 flow. Second operand has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 28 states have internal predecessors, (295), 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) [2025-03-14 00:44:57,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:57,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:44:57,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:06,687 INFO L124 PetriNetUnfolderBase]: 30735/59551 cut-off events. [2025-03-14 00:45:06,687 INFO L125 PetriNetUnfolderBase]: For 244562/244562 co-relation queries the response was YES. [2025-03-14 00:45:07,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179038 conditions, 59551 events. 30735/59551 cut-off events. For 244562/244562 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 520750 event pairs, 5014 based on Foata normal form. 483/60027 useless extension candidates. Maximal degree in co-relation 176887. Up to 9984 conditions per place. [2025-03-14 00:45:07,442 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 661 selfloop transitions, 1137 changer transitions 30/1833 dead transitions. [2025-03-14 00:45:07,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1833 transitions, 22870 flow [2025-03-14 00:45:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-14 00:45:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-14 00:45:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 805 transitions. [2025-03-14 00:45:07,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5261437908496732 [2025-03-14 00:45:07,444 INFO L175 Difference]: Start difference. First operand has 212 places, 554 transitions, 6757 flow. Second operand 45 states and 805 transitions. [2025-03-14 00:45:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1833 transitions, 22870 flow [2025-03-14 00:45:09,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1833 transitions, 20964 flow, removed 903 selfloop flow, removed 3 redundant places. [2025-03-14 00:45:09,908 INFO L231 Difference]: Finished difference. Result has 264 places, 1356 transitions, 19352 flow [2025-03-14 00:45:09,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5172, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=19352, PETRI_PLACES=264, PETRI_TRANSITIONS=1356} [2025-03-14 00:45:09,909 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2025-03-14 00:45:09,909 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 1356 transitions, 19352 flow [2025-03-14 00:45:09,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 28 states have internal predecessors, (295), 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) [2025-03-14 00:45:09,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:09,910 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:09,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-14 00:45:10,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:45:10,110 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:45:10,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1356256342, now seen corresponding path program 1 times [2025-03-14 00:45:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:10,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103400802] [2025-03-14 00:45:10,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:45:10,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:10,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-14 00:45:10,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-14 00:45:10,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:45:10,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 00:45:10,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:10,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103400802] [2025-03-14 00:45:10,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103400802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:45:10,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800452245] [2025-03-14 00:45:10,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:45:10,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:45:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:45:10,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 00:45:10,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 00:45:10,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-14 00:45:10,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-14 00:45:10,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:45:10,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:10,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-14 00:45:10,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:45:10,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:45:10,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:45:11,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:45:11,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:45:11,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-14 00:45:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:11,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:45:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-14 00:45:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800452245] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:45:11,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:45:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 23 [2025-03-14 00:45:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350733085] [2025-03-14 00:45:11,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:45:11,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-14 00:45:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:11,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-14 00:45:11,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2025-03-14 00:45:11,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-14 00:45:11,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 1356 transitions, 19352 flow. Second operand has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 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) [2025-03-14 00:45:11,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:11,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-14 00:45:11,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:35,097 INFO L124 PetriNetUnfolderBase]: 54389/105465 cut-off events. [2025-03-14 00:45:35,097 INFO L125 PetriNetUnfolderBase]: For 767191/767191 co-relation queries the response was YES. [2025-03-14 00:45:36,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347653 conditions, 105465 events. 54389/105465 cut-off events. For 767191/767191 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 945185 event pairs, 6582 based on Foata normal form. 603/106025 useless extension candidates. Maximal degree in co-relation 345464. Up to 17577 conditions per place. [2025-03-14 00:45:37,260 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 788 selfloop transitions, 2245 changer transitions 26/3064 dead transitions. [2025-03-14 00:45:37,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 3064 transitions, 44077 flow [2025-03-14 00:45:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-03-14 00:45:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2025-03-14 00:45:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1142 transitions. [2025-03-14 00:45:37,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5167420814479639 [2025-03-14 00:45:37,262 INFO L175 Difference]: Start difference. First operand has 264 places, 1356 transitions, 19352 flow. Second operand 65 states and 1142 transitions. [2025-03-14 00:45:37,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 3064 transitions, 44077 flow [2025-03-14 00:45:56,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 3064 transitions, 42855 flow, removed 296 selfloop flow, removed 4 redundant places. [2025-03-14 00:45:56,256 INFO L231 Difference]: Finished difference. Result has 338 places, 2475 transitions, 39921 flow [2025-03-14 00:45:56,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=18799, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=39921, PETRI_PLACES=338, PETRI_TRANSITIONS=2475} [2025-03-14 00:45:56,257 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 306 predicate places. [2025-03-14 00:45:56,257 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 2475 transitions, 39921 flow [2025-03-14 00:45:56,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 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) [2025-03-14 00:45:56,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:56,258 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:56,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-14 00:45:56,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:45:56,458 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:45:56,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1202566564, now seen corresponding path program 3 times [2025-03-14 00:45:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:56,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479806454] [2025-03-14 00:45:56,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:45:56,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:56,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 4 equivalence classes. [2025-03-14 00:45:56,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 00:45:56,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-14 00:45:56,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat