./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-threaded-sum-3.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-threaded-sum-3.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 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 --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 05:38:21,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-20 05:38:21,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-03-20 05:38:21,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-20 05:38:21,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-20 05:38:21,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-20 05:38:21,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-20 05:38:21,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-20 05:38:21,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-20 05:38:21,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-20 05:38:21,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * Use SBE=true [2025-03-20 05:38:21,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-20 05:38:21,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-20 05:38:21,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-20 05:38:21,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-20 05:38:21,319 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-20 05:38:21,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-20 05:38:21,319 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-20 05:38:21,319 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-20 05:38:21,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-20 05:38:21,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-20 05:38:21,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-20 05:38:21,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-20 05:38:21,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 05:38:21,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-20 05:38:21,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-20 05:38:21,320 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-20 05:38:21,321 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-20 05:38:21,321 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 -> 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 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 05:38:21,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-20 05:38:21,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-20 05:38:21,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-20 05:38:21,563 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-20 05:38:21,564 INFO L274 PluginConnector]: CDTParser initialized [2025-03-20 05:38:21,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2025-03-20 05:38:22,806 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/aac794734/264610896445456382f851a6f8d4cdac/FLAGd43cb0d1a [2025-03-20 05:38:22,970 INFO L389 CDTParser]: Found 1 translation units. [2025-03-20 05:38:22,971 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2025-03-20 05:38:22,977 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/aac794734/264610896445456382f851a6f8d4cdac/FLAGd43cb0d1a [2025-03-20 05:38:23,807 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/aac794734/264610896445456382f851a6f8d4cdac [2025-03-20 05:38:23,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-20 05:38:23,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-20 05:38:23,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-20 05:38:23,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-20 05:38:23,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-20 05:38:23,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:23,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ddef5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23, skipping insertion in model container [2025-03-20 05:38:23,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:23,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-20 05:38:23,955 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-threaded-sum-3.wvr.c[2996,3009] [2025-03-20 05:38:23,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 05:38:23,965 INFO L200 MainTranslator]: Completed pre-run [2025-03-20 05:38:23,989 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-threaded-sum-3.wvr.c[2996,3009] [2025-03-20 05:38:23,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 05:38:23,999 INFO L204 MainTranslator]: Completed translation [2025-03-20 05:38:24,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23 WrapperNode [2025-03-20 05:38:24,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-20 05:38:24,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-20 05:38:24,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-20 05:38:24,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-20 05:38:24,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,024 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2025-03-20 05:38:24,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-20 05:38:24,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-20 05:38:24,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-20 05:38:24,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-20 05:38:24,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,039 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-20 05:38:24,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-20 05:38:24,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-20 05:38:24,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-20 05:38:24,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (1/1) ... [2025-03-20 05:38:24,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 05:38:24,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 05:38:24,075 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 05:38:24,078 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 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-20 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-20 05:38:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-20 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-20 05:38:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-20 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-20 05:38:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-20 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-20 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-20 05:38:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-20 05:38:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-20 05:38:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-20 05:38:24,098 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 05:38:24,157 INFO L234 CfgBuilder]: Building ICFG [2025-03-20 05:38:24,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-20 05:38:24,299 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-20 05:38:24,299 INFO L283 CfgBuilder]: Performing block encoding [2025-03-20 05:38:24,438 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-20 05:38:24,438 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-20 05:38:24,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:38:24 BoogieIcfgContainer [2025-03-20 05:38:24,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-20 05:38:24,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-20 05:38:24,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-20 05:38:24,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-20 05:38:24,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:38:23" (1/3) ... [2025-03-20 05:38:24,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6451f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:38:24, skipping insertion in model container [2025-03-20 05:38:24,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:38:23" (2/3) ... [2025-03-20 05:38:24,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6451f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:38:24, skipping insertion in model container [2025-03-20 05:38:24,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:38:24" (3/3) ... [2025-03-20 05:38:24,447 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2025-03-20 05:38:24,456 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-20 05:38:24,458 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-threaded-sum-3.wvr.c that has 4 procedures, 33 locations, 32 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-20 05:38:24,458 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-20 05:38:24,509 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-20 05:38:24,538 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 05:38:24,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-20 05:38:24,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 05:38:24,540 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 05:38:24,542 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 05:38:24,589 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-20 05:38:24,595 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-03-20 05:38:24,602 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;@4ef0bbda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 05:38:24,602 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-20 05:38:25,499 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-20 05:38:25,502 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 05:38:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1529218507, now seen corresponding path program 1 times [2025-03-20 05:38:25,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 05:38:25,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384724345] [2025-03-20 05:38:25,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 05:38:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 05:38:25,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-20 05:38:25,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-20 05:38:25,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 05:38:25,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 05:38:27,450 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 05:38:27,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 05:38:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384724345] [2025-03-20 05:38:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384724345] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 05:38:27,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 05:38:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-20 05:38:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159098083] [2025-03-20 05:38:27,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 05:38:27,457 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-20 05:38:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 05:38:27,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-20 05:38:27,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-03-20 05:38:27,474 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:38:27,475 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 05:38:27,477 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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 05:38:27,477 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:38:28,286 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-20 05:38:28,286 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-20 05:38:28,286 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-20 05:38:28,287 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 05:38:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1924259576, now seen corresponding path program 2 times [2025-03-20 05:38:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 05:38:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314945781] [2025-03-20 05:38:28,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 05:38:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 05:38:28,296 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-20 05:38:28,304 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 68 statements. [2025-03-20 05:38:28,304 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-20 05:38:28,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 05:38:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-20 05:38:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 05:38:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314945781] [2025-03-20 05:38:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314945781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 05:38:28,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 05:38:28,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-20 05:38:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458025961] [2025-03-20 05:38:28,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 05:38:28,483 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-20 05:38:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 05:38:28,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-20 05:38:28,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-20 05:38:28,483 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:38:28,483 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 05:38:28,484 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 05:38:28,484 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-03-20 05:38:28,484 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:38:28,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-20 05:38:28,561 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 05:38:28,561 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-20 05:38:28,561 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-20 05:38:28,561 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 05:38:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1765631898, now seen corresponding path program 3 times [2025-03-20 05:38:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 05:38:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852574394] [2025-03-20 05:38:28,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-20 05:38:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 05:38:28,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 4 equivalence classes. [2025-03-20 05:38:28,593 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 43 of 73 statements. [2025-03-20 05:38:28,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-20 05:38:28,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 05:38:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-20 05:38:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 05:38:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852574394] [2025-03-20 05:38:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852574394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 05:38:29,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 05:38:29,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-20 05:38:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430523610] [2025-03-20 05:38:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 05:38:29,412 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-20 05:38:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 05:38:29,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-20 05:38:29,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-20 05:38:29,413 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:38:29,413 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 05:38:29,414 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-20 05:38:29,414 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-03-20 05:38:29,414 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 05:38:29,414 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:38:30,408 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-20 05:38:30,408 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-20 05:38:30,409 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-20 05:38:30,409 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-20 05:38:30,409 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-20 05:38:30,409 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 05:38:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1897315968, now seen corresponding path program 4 times [2025-03-20 05:38:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 05:38:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243721535] [2025-03-20 05:38:30,410 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-20 05:38:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 05:38:30,424 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 118 statements into 2 equivalence classes. [2025-03-20 05:38:31,061 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-03-20 05:38:31,062 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-20 05:38:31,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 05:42:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 156 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 05:42:22,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 05:42:22,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243721535] [2025-03-20 05:42:22,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243721535] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 05:42:22,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503142094] [2025-03-20 05:42:22,491 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-20 05:42:22,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 05:42:22,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 05:42:22,494 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 05:42:22,496 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 05:42:22,537 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 118 statements into 2 equivalence classes. [2025-03-20 05:42:22,839 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-03-20 05:42:22,839 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-20 05:42:22,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 05:42:22,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-03-20 05:42:22,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 05:45:13,842 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-20 05:45:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 05:45:15,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 05:48:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 05:48:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503142094] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 05:48:12,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 05:48:12,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 49, 48] total 146 [2025-03-20 05:48:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221674678] [2025-03-20 05:48:12,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 05:48:12,254 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2025-03-20 05:48:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 05:48:12,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2025-03-20 05:48:12,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3034, Invalid=18353, Unknown=75, NotChecked=0, Total=21462 [2025-03-20 05:48:12,262 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:48:12,262 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 05:48:12,263 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.360544217687075) internal successors, (347), 146 states have internal predecessors, (347), 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 05:48:12,263 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-03-20 05:48:12,263 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-20 05:48:12,263 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2025-03-20 05:48:12,263 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 05:48:16,696 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:48:23,057 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 338 DAG size of output: 256 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 05:48:31,389 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:48:41,601 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:48:43,697 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:48:52,013 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:48:54,104 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:49:01,348 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:49:12,599 WARN L286 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 328 DAG size of output: 317 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 05:49:20,152 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:49:27,306 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:49:34,906 WARN L286 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 331 DAG size of output: 292 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-20 05:49:36,923 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:49:56,147 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:50:17,950 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:50:22,034 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:50:27,440 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:50:31,181 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:50:37,992 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:50:40,213 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:51:07,480 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-20 05:51:11,581 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15