./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6f232940 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-20 04:09:47,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-20 04:09:47,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-03-20 04:09:47,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-20 04:09:47,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-20 04:09:47,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-20 04:09:47,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-20 04:09:47,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-20 04:09:47,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-20 04:09:47,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-20 04:09:47,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-20 04:09:47,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-20 04:09:47,425 INFO L153 SettingsManager]: * Use SBE=true [2025-03-20 04:09:47,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-20 04:09:47,426 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-20 04:09:47,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 04:09:47,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-20 04:09:47,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-20 04:09:47,428 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-20 04:09:47,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-20 04:09:47,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-20 04:09:47,428 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-20 04:09:47,428 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-20 04:09:47,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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 -> GemCutter 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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> PERSISTENT_SETS [2025-03-20 04:09:47,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-20 04:09:47,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-20 04:09:47,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-20 04:09:47,696 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-20 04:09:47,698 INFO L274 PluginConnector]: CDTParser initialized [2025-03-20 04:09:47,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-03-20 04:09:49,059 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a46a70947/660e1461b17b4580849abf842dd55c94/FLAG928585277 [2025-03-20 04:09:49,227 INFO L389 CDTParser]: Found 1 translation units. [2025-03-20 04:09:49,228 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-03-20 04:09:49,235 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a46a70947/660e1461b17b4580849abf842dd55c94/FLAG928585277 [2025-03-20 04:09:50,210 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a46a70947/660e1461b17b4580849abf842dd55c94 [2025-03-20 04:09:50,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-20 04:09:50,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-20 04:09:50,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-20 04:09:50,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-20 04:09:50,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-20 04:09:50,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51508932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50, skipping insertion in model container [2025-03-20 04:09:50,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-20 04:09:50,354 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2025-03-20 04:09:50,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 04:09:50,368 INFO L200 MainTranslator]: Completed pre-run [2025-03-20 04:09:50,399 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2025-03-20 04:09:50,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 04:09:50,415 INFO L204 MainTranslator]: Completed translation [2025-03-20 04:09:50,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50 WrapperNode [2025-03-20 04:09:50,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-20 04:09:50,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-20 04:09:50,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-20 04:09:50,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-20 04:09:50,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,439 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 179 [2025-03-20 04:09:50,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-20 04:09:50,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-20 04:09:50,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-20 04:09:50,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-20 04:09:50,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,450 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-20 04:09:50,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-20 04:09:50,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-20 04:09:50,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-20 04:09:50,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (1/1) ... [2025-03-20 04:09:50,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 04:09:50,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:09:50,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-20 04:09:50,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-20 04:09:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-20 04:09:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-20 04:09:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-20 04:09:50,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-20 04:09:50,506 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-20 04:09:50,563 INFO L234 CfgBuilder]: Building ICFG [2025-03-20 04:09:50,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-20 04:09:50,808 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-20 04:09:50,808 INFO L283 CfgBuilder]: Performing block encoding [2025-03-20 04:09:51,020 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-20 04:09:51,020 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-20 04:09:51,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:09:51 BoogieIcfgContainer [2025-03-20 04:09:51,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-20 04:09:51,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-20 04:09:51,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-20 04:09:51,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-20 04:09:51,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 04:09:50" (1/3) ... [2025-03-20 04:09:51,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623389eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:09:51, skipping insertion in model container [2025-03-20 04:09:51,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:09:50" (2/3) ... [2025-03-20 04:09:51,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623389eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:09:51, skipping insertion in model container [2025-03-20 04:09:51,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:09:51" (3/3) ... [2025-03-20 04:09:51,029 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2025-03-20 04:09:51,040 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-20 04:09:51,042 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 23 locations, 24 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-20 04:09:51,042 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-20 04:09:51,079 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-20 04:09:51,108 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 04:09:51,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-20 04:09:51,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:09:51,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-03-20 04:09:51,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-03-20 04:09:51,178 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-20 04:09:51,184 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-03-20 04:09:51,189 INFO L340 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=PARTIAL_ORDER_FA, 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;@402e9104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 04:09:51,189 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-20 04:09:51,390 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:09:51,393 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:09:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash -88766969, now seen corresponding path program 1 times [2025-03-20 04:09:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:09:51,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264955815] [2025-03-20 04:09:51,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:09:51,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:09:51,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-20 04:09:51,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-20 04:09:51,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:09:51,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 04:09:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:09:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264955815] [2025-03-20 04:09:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264955815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 04:09:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 04:09:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-20 04:09:51,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810478808] [2025-03-20 04:09:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 04:09:51,809 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-20 04:09:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:09:51,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-20 04:09:51,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-20 04:09:51,821 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:51,822 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:09:51,823 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-03-20 04:09:51,823 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:51,874 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:51,875 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-20 04:09:51,875 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:09:51,875 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:09:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 653317711, now seen corresponding path program 1 times [2025-03-20 04:09:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:09:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674829115] [2025-03-20 04:09:51,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:09:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:09:51,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-20 04:09:51,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-20 04:09:51,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:09:51,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:09:52,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:09:52,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674829115] [2025-03-20 04:09:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674829115] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 04:09:52,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 04:09:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-20 04:09:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224955458] [2025-03-20 04:09:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 04:09:52,035 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-20 04:09:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:09:52,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-20 04:09:52,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-20 04:09:52,037 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:52,038 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:09:52,038 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2025-03-20 04:09:52,038 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,038 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:52,084 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,084 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,084 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-20 04:09:52,084 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:09:52,085 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:09:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash -467312351, now seen corresponding path program 1 times [2025-03-20 04:09:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:09:52,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358423912] [2025-03-20 04:09:52,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:09:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:09:52,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-20 04:09:52,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-20 04:09:52,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:09:52,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:09:52,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:09:52,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358423912] [2025-03-20 04:09:52,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358423912] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:09:52,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794729737] [2025-03-20 04:09:52,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:09:52,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:09:52,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:09:52,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:09:52,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-20 04:09:52,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-20 04:09:52,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-20 04:09:52,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:09:52,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:52,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-20 04:09:52,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:09:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:09:52,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:09:52,567 INFO L354 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 36 treesize of output 12 [2025-03-20 04:09:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:09:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794729737] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:09:52,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 04:09:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2025-03-20 04:09:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116642515] [2025-03-20 04:09:52,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 04:09:52,613 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-20 04:09:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:09:52,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-20 04:09:52,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-20 04:09:52,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:52,614 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:09:52,614 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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) [2025-03-20 04:09:52,614 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,614 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,614 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:52,737 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,737 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:52,737 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:09:52,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-20 04:09:52,938 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-20 04:09:52,938 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:09:52,938 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:09:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1002568045, now seen corresponding path program 2 times [2025-03-20 04:09:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:09:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751210858] [2025-03-20 04:09:52,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 04:09:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:09:52,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-20 04:09:52,974 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-20 04:09:52,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-20 04:09:52,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-20 04:09:53,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:09:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751210858] [2025-03-20 04:09:53,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751210858] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:09:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801598043] [2025-03-20 04:09:53,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 04:09:53,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:09:53,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:09:53,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:09:53,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-20 04:09:53,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-20 04:09:53,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-20 04:09:53,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-20 04:09:53,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:53,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-20 04:09:53,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:09:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-20 04:09:53,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:09:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-20 04:09:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801598043] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:09:53,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 04:09:53,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2025-03-20 04:09:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216211468] [2025-03-20 04:09:53,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 04:09:53,503 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-20 04:09:53,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:09:53,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-20 04:09:53,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-03-20 04:09:53,503 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:53,503 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:09:53,503 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 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) [2025-03-20 04:09:53,503 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:53,503 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:53,503 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:09:53,504 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:53,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:53,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:53,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:09:53,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-20 04:09:53,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-20 04:09:54,059 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:09:54,059 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:09:54,060 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:09:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 601319543, now seen corresponding path program 3 times [2025-03-20 04:09:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:09:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700240883] [2025-03-20 04:09:54,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-20 04:09:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:09:54,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 40 statements into 3 equivalence classes. [2025-03-20 04:09:54,138 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-20 04:09:54,138 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-20 04:09:54,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-20 04:09:54,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:09:54,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700240883] [2025-03-20 04:09:54,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700240883] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:09:54,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262794383] [2025-03-20 04:09:54,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-20 04:09:54,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:09:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:09:54,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:09:54,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-20 04:09:54,375 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 40 statements into 3 equivalence classes. [2025-03-20 04:09:54,403 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-20 04:09:54,403 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-20 04:09:54,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:54,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-20 04:09:54,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:09:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-20 04:09:54,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:09:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-20 04:09:54,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262794383] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:09:54,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 04:09:54,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2025-03-20 04:09:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297285752] [2025-03-20 04:09:54,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 04:09:54,644 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-20 04:09:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:09:54,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-20 04:09:54,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-03-20 04:09:54,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:54,645 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:09:54,645 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-20 04:09:54,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:54,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:54,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:09:54,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2025-03-20 04:09:54,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:09:54,961 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:54,961 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:09:54,961 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:09:54,961 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-20 04:09:54,961 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-20 04:09:54,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-20 04:09:55,166 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:09:55,166 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:09:55,166 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:09:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1358424987, now seen corresponding path program 4 times [2025-03-20 04:09:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:09:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333513610] [2025-03-20 04:09:55,166 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-20 04:09:55,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:09:55,178 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-20 04:09:55,265 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-20 04:09:55,265 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-20 04:09:55,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 04:09:59,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:09:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333513610] [2025-03-20 04:09:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333513610] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:09:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482483502] [2025-03-20 04:09:59,113 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-20 04:09:59,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:09:59,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:09:59,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:09:59,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-20 04:09:59,178 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-20 04:09:59,212 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-20 04:09:59,212 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-20 04:09:59,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:09:59,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-20 04:09:59,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:09:59,925 INFO L325 Elim1Store]: treesize reduction 179, result has 16.0 percent of original size [2025-03-20 04:09:59,925 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 111 treesize of output 71 [2025-03-20 04:09:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-20 04:09:59,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:10:00,657 INFO L325 Elim1Store]: treesize reduction 235, result has 21.9 percent of original size [2025-03-20 04:10:00,658 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 307 treesize of output 140 [2025-03-20 04:10:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-20 04:10:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482483502] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:10:00,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 04:10:00,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 11] total 37 [2025-03-20 04:10:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938997522] [2025-03-20 04:10:00,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 04:10:00,756 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-20 04:10:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:10:00,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-20 04:10:00,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2025-03-20 04:10:00,757 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:10:00,757 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:10:00,758 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 37 states have internal predecessors, (122), 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) [2025-03-20 04:10:00,758 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:00,758 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:00,758 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:10:00,758 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2025-03-20 04:10:00,758 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-03-20 04:10:00,758 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:10:01,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:01,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:01,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:10:01,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-20 04:10:01,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-20 04:10:01,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-20 04:10:01,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-20 04:10:02,059 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-20 04:10:02,060 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:10:02,060 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:10:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1081053108, now seen corresponding path program 5 times [2025-03-20 04:10:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:10:02,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087564055] [2025-03-20 04:10:02,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-20 04:10:02,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:10:02,072 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 4 equivalence classes. [2025-03-20 04:10:02,107 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 53 of 53 statements. [2025-03-20 04:10:02,108 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-20 04:10:02,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:10:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-20 04:10:02,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:10:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087564055] [2025-03-20 04:10:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087564055] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:10:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548590446] [2025-03-20 04:10:02,250 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-20 04:10:02,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:10:02,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:10:02,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:10:02,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-20 04:10:02,309 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 4 equivalence classes. [2025-03-20 04:10:02,390 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 53 of 53 statements. [2025-03-20 04:10:02,390 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-20 04:10:02,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:10:02,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-20 04:10:02,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:10:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-20 04:10:02,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:10:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-20 04:10:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548590446] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:10:02,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 04:10:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 9] total 21 [2025-03-20 04:10:02,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485283827] [2025-03-20 04:10:02,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 04:10:02,630 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-20 04:10:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:10:02,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-20 04:10:02,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-03-20 04:10:02,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:10:02,630 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:10:02,631 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-03-20 04:10:02,631 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-20 04:10:02,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-20 04:10:02,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-20 04:10:03,122 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:10:03,122 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:10:03,122 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:10:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1754373603, now seen corresponding path program 6 times [2025-03-20 04:10:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:10:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182650306] [2025-03-20 04:10:03,122 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-20 04:10:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:10:03,136 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 77 statements into 8 equivalence classes. [2025-03-20 04:10:03,297 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 77 of 77 statements. [2025-03-20 04:10:03,297 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-03-20 04:10:03,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:10:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 10 proven. 113 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2025-03-20 04:10:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:10:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182650306] [2025-03-20 04:10:03,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182650306] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:10:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595695636] [2025-03-20 04:10:03,578 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-20 04:10:03,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:10:03,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:10:03,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:10:03,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-20 04:10:03,649 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 77 statements into 8 equivalence classes. [2025-03-20 04:10:03,779 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 77 of 77 statements. [2025-03-20 04:10:03,779 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-03-20 04:10:03,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:10:03,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-20 04:10:03,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:10:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 198 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-20 04:10:04,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:10:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 11 proven. 78 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2025-03-20 04:10:04,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595695636] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:10:04,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 04:10:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23, 10] total 33 [2025-03-20 04:10:04,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845246641] [2025-03-20 04:10:04,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 04:10:04,276 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-20 04:10:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 04:10:04,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-20 04:10:04,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2025-03-20 04:10:04,277 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:10:04,277 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:10:04,277 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 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) [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-03-20 04:10:04,277 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-20 04:10:05,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-20 04:10:05,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-20 04:10:05,444 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-20 04:10:05,445 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:10:05,445 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:10:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash -621984308, now seen corresponding path program 7 times [2025-03-20 04:10:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 04:10:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264326651] [2025-03-20 04:10:05,445 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-20 04:10:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 04:10:05,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-20 04:10:05,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-20 04:10:05,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:10:05,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:10:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 21 proven. 319 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-03-20 04:10:17,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 04:10:17,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264326651] [2025-03-20 04:10:17,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264326651] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 04:10:17,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985610514] [2025-03-20 04:10:17,301 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-20 04:10:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:10:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:10:17,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:10:17,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-20 04:10:17,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-20 04:10:17,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-20 04:10:17,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:10:17,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:10:17,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-03-20 04:10:17,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:11:03,365 INFO L325 Elim1Store]: treesize reduction 923, result has 7.0 percent of original size [2025-03-20 04:11:03,365 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 22 new quantified variables, introduced 91 case distinctions, treesize of input 214 treesize of output 143 [2025-03-20 04:11:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 79 proven. 193 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2025-03-20 04:11:03,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:15:39,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2025-03-20 04:15:39,653 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2025-03-20 04:15:39,653 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-03-20 04:15:39,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-20 04:15:39,854 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:39,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-03-20 04:15:39,860 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:910) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:784) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:372) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:321) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:554) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isCounterexampleFeasible(PartialOrderCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 48 more [2025-03-20 04:15:39,867 INFO L158 Benchmark]: Toolchain (without parser) took 349654.33ms. Allocated memory was 83.9MB in the beginning and 276.8MB in the end (delta: 192.9MB). Free memory was 59.3MB in the beginning and 105.8MB in the end (delta: -46.4MB). Peak memory consumption was 142.3MB. Max. memory is 16.1GB. [2025-03-20 04:15:39,867 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-20 04:15:39,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.17ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 44.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-20 04:15:39,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.28ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 42.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-20 04:15:39,868 INFO L158 Benchmark]: Boogie Preprocessor took 16.84ms. Allocated memory is still 83.9MB. Free memory was 42.7MB in the beginning and 41.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-20 04:15:39,868 INFO L158 Benchmark]: RCFGBuilder took 563.99ms. Allocated memory is still 83.9MB. Free memory was 41.2MB in the beginning and 27.8MB in the end (delta: 13.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2025-03-20 04:15:39,868 INFO L158 Benchmark]: TraceAbstraction took 348843.71ms. Allocated memory was 83.9MB in the beginning and 276.8MB in the end (delta: 192.9MB). Free memory was 27.2MB in the beginning and 105.8MB in the end (delta: -78.5MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2025-03-20 04:15:39,871 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.17ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 44.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.28ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 42.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.84ms. Allocated memory is still 83.9MB. Free memory was 42.7MB in the beginning and 41.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 563.99ms. Allocated memory is still 83.9MB. Free memory was 41.2MB in the beginning and 27.8MB in the end (delta: 13.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 348843.71ms. Allocated memory was 83.9MB in the beginning and 276.8MB in the end (delta: 192.9MB). Free memory was 27.2MB in the beginning and 105.8MB in the end (delta: -78.5MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-20 04:15:41,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-20 04:15:41,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-03-20 04:15:41,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-20 04:15:41,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-20 04:15:41,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-20 04:15:41,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-20 04:15:41,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-20 04:15:41,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-20 04:15:41,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-20 04:15:41,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-20 04:15:41,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * Use SBE=true [2025-03-20 04:15:41,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-20 04:15:41,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-20 04:15:41,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-20 04:15:41,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 04:15:41,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-20 04:15:41,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-20 04:15:41,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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 -> GemCutter 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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> PERSISTENT_SETS [2025-03-20 04:15:41,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-20 04:15:41,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-20 04:15:41,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-20 04:15:41,663 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-20 04:15:41,663 INFO L274 PluginConnector]: CDTParser initialized [2025-03-20 04:15:41,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-03-20 04:15:42,962 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/357bea52d/b5193ea9b9884064b56869e758e61ac0/FLAG31c2bed0c [2025-03-20 04:15:43,104 INFO L389 CDTParser]: Found 1 translation units. [2025-03-20 04:15:43,105 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-03-20 04:15:43,111 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/357bea52d/b5193ea9b9884064b56869e758e61ac0/FLAG31c2bed0c [2025-03-20 04:15:44,163 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/357bea52d/b5193ea9b9884064b56869e758e61ac0 [2025-03-20 04:15:44,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-20 04:15:44,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-20 04:15:44,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-20 04:15:44,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-20 04:15:44,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-20 04:15:44,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dca70dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44, skipping insertion in model container [2025-03-20 04:15:44,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-20 04:15:44,307 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2025-03-20 04:15:44,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 04:15:44,321 INFO L200 MainTranslator]: Completed pre-run [2025-03-20 04:15:44,348 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2025-03-20 04:15:44,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 04:15:44,365 INFO L204 MainTranslator]: Completed translation [2025-03-20 04:15:44,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44 WrapperNode [2025-03-20 04:15:44,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-20 04:15:44,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-20 04:15:44,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-20 04:15:44,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-20 04:15:44,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,398 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 174 [2025-03-20 04:15:44,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-20 04:15:44,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-20 04:15:44,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-20 04:15:44,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-20 04:15:44,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,426 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-20 04:15:44,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-20 04:15:44,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-20 04:15:44,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-20 04:15:44,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (1/1) ... [2025-03-20 04:15:44,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 04:15:44,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:44,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-20 04:15:44,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-20 04:15:44,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-20 04:15:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-20 04:15:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-20 04:15:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-20 04:15:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-20 04:15:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-03-20 04:15:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-20 04:15:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-20 04:15:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-20 04:15:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-03-20 04:15:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-20 04:15:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-20 04:15:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-03-20 04:15:44,502 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-20 04:15:44,595 INFO L234 CfgBuilder]: Building ICFG [2025-03-20 04:15:44,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-20 04:15:44,886 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-20 04:15:44,886 INFO L283 CfgBuilder]: Performing block encoding [2025-03-20 04:15:45,103 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-20 04:15:45,103 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-20 04:15:45,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:15:45 BoogieIcfgContainer [2025-03-20 04:15:45,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-20 04:15:45,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-20 04:15:45,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-20 04:15:45,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-20 04:15:45,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 04:15:44" (1/3) ... [2025-03-20 04:15:45,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c46c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:15:45, skipping insertion in model container [2025-03-20 04:15:45,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 04:15:44" (2/3) ... [2025-03-20 04:15:45,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c46c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 04:15:45, skipping insertion in model container [2025-03-20 04:15:45,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 04:15:45" (3/3) ... [2025-03-20 04:15:45,112 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2025-03-20 04:15:45,123 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-20 04:15:45,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 23 locations, 24 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-20 04:15:45,124 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-20 04:15:45,163 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-20 04:15:45,194 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 04:15:45,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-20 04:15:45,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:45,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-03-20 04:15:45,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-03-20 04:15:45,252 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-20 04:15:45,258 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-03-20 04:15:45,263 INFO L340 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=PARTIAL_ORDER_FA, 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;@5d6d3b53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 04:15:45,263 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-20 04:15:46,535 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:46,538 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2022240893, now seen corresponding path program 1 times [2025-03-20 04:15:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:46,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286284209] [2025-03-20 04:15:46,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:15:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:46,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:46,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-20 04:15:46,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-20 04:15:46,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-20 04:15:46,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:15:46,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:46,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-20 04:15:46,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 04:15:46,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-20 04:15:46,707 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286284209] [2025-03-20 04:15:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286284209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 04:15:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 04:15:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-20 04:15:46,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661929917] [2025-03-20 04:15:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 04:15:46,714 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-20 04:15:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:46,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-20 04:15:46,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-20 04:15:46,726 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:46,727 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:46,728 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-03-20 04:15:46,728 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:46,787 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:46,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-20 04:15:46,987 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:46,988 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:46,988 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1670051983, now seen corresponding path program 1 times [2025-03-20 04:15:46,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:46,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387531821] [2025-03-20 04:15:46,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:15:46,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:46,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:46,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:46,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-20 04:15:47,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-20 04:15:47,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-20 04:15:47,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:15:47,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:47,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-20 04:15:47,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:15:47,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-20 04:15:47,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387531821] [2025-03-20 04:15:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387531821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 04:15:47,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 04:15:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-20 04:15:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885681231] [2025-03-20 04:15:47,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 04:15:47,123 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-20 04:15:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:47,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-20 04:15:47,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-20 04:15:47,123 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:47,123 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:47,124 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2025-03-20 04:15:47,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:47,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:47,181 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:47,181 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:47,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-20 04:15:47,386 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:47,386 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:47,386 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash 986678999, now seen corresponding path program 1 times [2025-03-20 04:15:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:47,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363926637] [2025-03-20 04:15:47,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 04:15:47,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:47,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:47,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:47,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-20 04:15:47,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-20 04:15:47,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-20 04:15:47,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:15:47,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:47,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-20 04:15:47,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:47,517 INFO L354 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 [2025-03-20 04:15:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:15:47,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:15:48,035 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-20 04:15:48,035 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 250 [2025-03-20 04:15:48,064 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 74 [2025-03-20 04:15:48,326 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-20 04:15:48,326 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 372 treesize of output 330 [2025-03-20 04:15:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-20 04:15:50,077 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363926637] [2025-03-20 04:15:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363926637] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:15:50,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:15:50,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-20 04:15:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076764522] [2025-03-20 04:15:50,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:15:50,078 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-20 04:15:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:50,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-20 04:15:50,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-20 04:15:50,078 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:50,078 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:50,079 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 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) [2025-03-20 04:15:50,079 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:50,079 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:50,079 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:50,317 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:50,317 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:50,318 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:50,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-20 04:15:50,518 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:50,518 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:50,518 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1062092921, now seen corresponding path program 2 times [2025-03-20 04:15:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:50,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486595237] [2025-03-20 04:15:50,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 04:15:50,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:50,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:50,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-20 04:15:50,566 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-20 04:15:50,592 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-20 04:15:50,592 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-20 04:15:50,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:50,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-20 04:15:50,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-20 04:15:50,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:15:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-20 04:15:50,793 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:50,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486595237] [2025-03-20 04:15:50,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486595237] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:15:50,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:15:50,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-03-20 04:15:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761112910] [2025-03-20 04:15:50,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:15:50,793 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-20 04:15:50,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:50,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-20 04:15:50,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-03-20 04:15:50,794 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:50,794 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:50,794 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2025-03-20 04:15:50,794 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:50,794 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:50,794 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:50,794 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:51,218 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:51,218 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:51,219 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:51,219 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:15:51,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-20 04:15:51,419 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:51,423 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:51,423 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1228109149, now seen corresponding path program 3 times [2025-03-20 04:15:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:51,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303516388] [2025-03-20 04:15:51,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-20 04:15:51,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:51,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:51,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:51,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-20 04:15:51,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 4 equivalence classes. [2025-03-20 04:15:51,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 42 statements. [2025-03-20 04:15:51,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-20 04:15:51,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:51,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-20 04:15:51,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:51,714 INFO L325 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2025-03-20 04:15:51,714 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2025-03-20 04:15:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-20 04:15:51,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:15:51,802 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-20 04:15:51,802 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2025-03-20 04:15:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-20 04:15:51,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303516388] [2025-03-20 04:15:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303516388] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:15:51,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:15:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-20 04:15:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058407912] [2025-03-20 04:15:51,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:15:51,917 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-20 04:15:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:51,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-20 04:15:51,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-20 04:15:51,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:51,917 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:51,917 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-20 04:15:51,917 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:51,917 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:51,917 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:51,917 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:15:51,917 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:52,109 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:52,109 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:52,109 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:52,109 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:15:52,113 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:52,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-20 04:15:52,313 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:52,313 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:52,313 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1194236975, now seen corresponding path program 4 times [2025-03-20 04:15:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671179976] [2025-03-20 04:15:52,314 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-20 04:15:52,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:52,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:52,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-20 04:15:52,363 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-03-20 04:15:52,392 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 43 statements. [2025-03-20 04:15:52,392 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-20 04:15:52,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:52,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-20 04:15:52,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:15:52,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:15:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:15:52,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:52,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671179976] [2025-03-20 04:15:52,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671179976] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:15:52,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:15:52,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2025-03-20 04:15:52,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802376490] [2025-03-20 04:15:52,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:15:52,878 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-20 04:15:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:52,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-20 04:15:52,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2025-03-20 04:15:52,879 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:52,879 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:52,879 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 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) [2025-03-20 04:15:52,879 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:52,879 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:52,879 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:52,879 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:15:52,879 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:52,879 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:53,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:53,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:53,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:53,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:15:53,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:53,958 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:15:53,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-20 04:15:54,158 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:54,158 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:15:54,159 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:15:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -875961283, now seen corresponding path program 5 times [2025-03-20 04:15:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:15:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925124853] [2025-03-20 04:15:54,159 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-20 04:15:54,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:15:54,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:15:54,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:15:54,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-20 04:15:54,219 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 8 equivalence classes. [2025-03-20 04:15:54,486 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 67 of 67 statements. [2025-03-20 04:15:54,486 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-03-20 04:15:54,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:15:54,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-20 04:15:54,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:15:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:15:54,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:15:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:15:55,696 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:15:55,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925124853] [2025-03-20 04:15:55,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925124853] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:15:55,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:15:55,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2025-03-20 04:15:55,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895319991] [2025-03-20 04:15:55,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:15:55,697 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-20 04:15:55,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:15:55,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-20 04:15:55,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2025-03-20 04:15:55,698 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:15:55,698 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:15:55,698 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.9210526315789473) internal successors, (111), 38 states have internal predecessors, (111), 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) [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:15:55,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:16:00,523 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:00,523 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:00,524 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:00,524 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:16:00,524 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:00,524 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:16:00,524 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-20 04:16:00,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-20 04:16:00,724 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:16:00,725 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:16:00,725 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:16:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1067997461, now seen corresponding path program 6 times [2025-03-20 04:16:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:16:00,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333513610] [2025-03-20 04:16:00,725 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-20 04:16:00,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:16:00,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:16:00,728 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:16:00,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-20 04:16:00,796 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 16 equivalence classes. [2025-03-20 04:16:01,092 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 115 of 115 statements. [2025-03-20 04:16:01,092 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-20 04:16:01,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:16:01,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-20 04:16:01,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:16:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 645 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:16:01,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:16:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 645 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:16:04,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:16:04,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333513610] [2025-03-20 04:16:04,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333513610] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:16:04,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:16:04,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2025-03-20 04:16:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679288560] [2025-03-20 04:16:04,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:16:04,881 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-20 04:16:04,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:16:04,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-20 04:16:04,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=902, Invalid=3928, Unknown=0, NotChecked=0, Total=4830 [2025-03-20 04:16:04,883 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:16:04,883 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:16:04,884 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.9571428571428573) internal successors, (207), 70 states have internal predecessors, (207), 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) [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2025-03-20 04:16:04,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:16:31,950 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:31,950 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:31,951 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:31,951 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:16:31,951 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:31,951 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:16:31,951 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-20 04:16:31,951 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-03-20 04:16:31,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-20 04:16:32,151 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:16:32,152 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:16:32,152 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:16:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash 124457669, now seen corresponding path program 7 times [2025-03-20 04:16:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:16:32,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781911436] [2025-03-20 04:16:32,153 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-20 04:16:32,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:16:32,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:16:32,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:16:32,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-20 04:16:32,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 211 statements into 1 equivalence classes. [2025-03-20 04:16:32,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 211 of 211 statements. [2025-03-20 04:16:32,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 04:16:32,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:16:32,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-20 04:16:32,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:16:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 0 proven. 2821 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:16:35,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:16:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 0 proven. 2821 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:16:45,641 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:16:45,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781911436] [2025-03-20 04:16:45,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781911436] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:16:45,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:16:45,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 134 [2025-03-20 04:16:45,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979074052] [2025-03-20 04:16:45,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:16:45,641 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2025-03-20 04:16:45,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:16:45,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2025-03-20 04:16:45,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3318, Invalid=14504, Unknown=0, NotChecked=0, Total=17822 [2025-03-20 04:16:45,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:16:45,646 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:16:45,646 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.9776119402985075) internal successors, (399), 134 states have internal predecessors, (399), 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) [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 97 states. [2025-03-20 04:16:45,646 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-03-20 04:20:04,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2025-03-20 04:20:04,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-20 04:20:05,119 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:20:05,120 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-20 04:20:05,120 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 04:20:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 965199397, now seen corresponding path program 8 times [2025-03-20 04:20:05,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-20 04:20:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506185811] [2025-03-20 04:20:05,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 04:20:05,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 04:20:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 04:20:05,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 04:20:05,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-20 04:20:05,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 403 statements into 2 equivalence classes. [2025-03-20 04:20:05,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 403 of 403 statements. [2025-03-20 04:20:05,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-20 04:20:05,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 04:20:05,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 131 conjuncts are in the unsatisfiable core [2025-03-20 04:20:05,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 04:20:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11788 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:20:15,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 04:20:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11788 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-20 04:20:56,885 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-20 04:20:56,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506185811] [2025-03-20 04:20:56,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506185811] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 04:20:56,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-20 04:20:56,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 262 [2025-03-20 04:20:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560072972] [2025-03-20 04:20:56,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-20 04:20:56,885 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 262 states [2025-03-20 04:20:56,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-20 04:20:56,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 262 interpolants. [2025-03-20 04:20:56,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12758, Invalid=55624, Unknown=0, NotChecked=0, Total=68382 [2025-03-20 04:20:56,896 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:20:56,896 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 04:20:56,896 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 262 states, 262 states have (on average 2.9885496183206106) internal successors, (783), 262 states have internal predecessors, (783), 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) [2025-03-20 04:20:56,896 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 97 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 193 states. [2025-03-20 04:20:56,897 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 04:21:10,419 WARN L286 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 04:22:44,968 WARN L286 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 508 DAG size of output: 446 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 04:22:54,200 WARN L286 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 508 DAG size of output: 446 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 04:23:17,641 WARN L286 SmtUtils]: Spent 11.81s on a formula simplification that was a NOOP. DAG size: 439 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 04:23:58,675 WARN L286 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 438 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15