./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.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 42d87675 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-more-sum-array-hom.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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --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-42d8767-m [2025-04-25 03:48:19,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-25 03:48:19,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-25 03:48:19,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-25 03:48:19,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-25 03:48:19,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-25 03:48:19,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-25 03:48:19,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-25 03:48:19,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-25 03:48:19,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-25 03:48:19,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-25 03:48:19,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-25 03:48:19,279 INFO L153 SettingsManager]: * Use SBE=true [2025-04-25 03:48:19,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-25 03:48:19,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-25 03:48:19,280 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-25 03:48:19,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-25 03:48:19,281 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-25 03:48:19,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 03:48:19,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-25 03:48:19,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 03:48:19,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-25 03:48:19,283 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-25 03:48:19,284 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-25 03:48:19,284 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 -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a 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 [2025-04-25 03:48:19,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-25 03:48:19,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-25 03:48:19,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-25 03:48:19,538 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-25 03:48:19,538 INFO L274 PluginConnector]: CDTParser initialized [2025-04-25 03:48:19,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2025-04-25 03:48:20,855 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7d6aed08e/e41ce92bd83b477983cad8285826badc/FLAG12306ce0e [2025-04-25 03:48:21,065 INFO L389 CDTParser]: Found 1 translation units. [2025-04-25 03:48:21,065 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2025-04-25 03:48:21,070 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7d6aed08e/e41ce92bd83b477983cad8285826badc/FLAG12306ce0e [2025-04-25 03:48:21,905 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7d6aed08e/e41ce92bd83b477983cad8285826badc [2025-04-25 03:48:21,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-25 03:48:21,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-25 03:48:21,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-25 03:48:21,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-25 03:48:21,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-25 03:48:21,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.04 03:48:21" (1/1) ... [2025-04-25 03:48:21,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52625719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:21, skipping insertion in model container [2025-04-25 03:48:21,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.04 03:48:21" (1/1) ... [2025-04-25 03:48:21,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-25 03:48:22,105 WARN L116 LibraryModelHandler]: 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-more-sum-array-hom.wvr.c[2435,2448] [2025-04-25 03:48:22,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-25 03:48:22,131 INFO L200 MainTranslator]: Completed pre-run [2025-04-25 03:48:22,163 WARN L116 LibraryModelHandler]: 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-more-sum-array-hom.wvr.c[2435,2448] [2025-04-25 03:48:22,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-25 03:48:22,182 INFO L204 MainTranslator]: Completed translation [2025-04-25 03:48:22,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22 WrapperNode [2025-04-25 03:48:22,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-25 03:48:22,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-25 03:48:22,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-25 03:48:22,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-25 03:48:22,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,221 INFO L138 Inliner]: procedures = 24, calls = 19, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 84 [2025-04-25 03:48:22,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-25 03:48:22,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-25 03:48:22,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-25 03:48:22,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-25 03:48:22,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,237 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-25 03:48:22,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-25 03:48:22,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-25 03:48:22,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-25 03:48:22,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (1/1) ... [2025-04-25 03:48:22,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 03:48:22,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 03:48:22,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-25 03:48:22,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-25 03:48:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-25 03:48:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-25 03:48:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-25 03:48:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-25 03:48:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-25 03:48:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-25 03:48:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-25 03:48:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-25 03:48:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-25 03:48:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-25 03:48:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-25 03:48:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-25 03:48:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-25 03:48:22,309 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-25 03:48:22,377 INFO L234 CfgBuilder]: Building ICFG [2025-04-25 03:48:22,378 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-25 03:48:22,528 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-25 03:48:22,528 INFO L283 CfgBuilder]: Performing block encoding [2025-04-25 03:48:22,683 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-25 03:48:22,684 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-25 03:48:22,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 03:48:22 BoogieIcfgContainer [2025-04-25 03:48:22,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-25 03:48:22,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-25 03:48:22,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-25 03:48:22,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-25 03:48:22,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.04 03:48:21" (1/3) ... [2025-04-25 03:48:22,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29044ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.04 03:48:22, skipping insertion in model container [2025-04-25 03:48:22,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 03:48:22" (2/3) ... [2025-04-25 03:48:22,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29044ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.04 03:48:22, skipping insertion in model container [2025-04-25 03:48:22,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 03:48:22" (3/3) ... [2025-04-25 03:48:22,692 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2025-04-25 03:48:22,701 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-25 03:48:22,704 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-sum-array-hom.wvr.c that has 4 procedures, 24 locations, 24 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-25 03:48:22,704 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-25 03:48:22,746 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-25 03:48:22,788 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-25 03:48:22,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-25 03:48:22,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 03:48:22,792 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) [2025-04-25 03:48:22,794 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 [2025-04-25 03:48:22,867 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-25 03:48:22,877 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-25 03:48:22,885 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;@14a89947, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-25 03:48:22,886 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-25 03:48:22,943 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)] === [2025-04-25 03:48:22,948 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 03:48:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 573931357, now seen corresponding path program 1 times [2025-04-25 03:48:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 03:48:22,954 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920044710] [2025-04-25 03:48:22,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 03:48:22,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 03:48:23,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-25 03:48:23,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-25 03:48:23,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 03:48:23,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 03:48:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 03:48:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 03:48:23,303 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920044710] [2025-04-25 03:48:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920044710] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 03:48:23,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 03:48:23,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-25 03:48:23,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927575081] [2025-04-25 03:48:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 03:48:23,308 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-25 03:48:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 03:48:23,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-25 03:48:23,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-25 03:48:23,324 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 03:48:23,325 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 03:48:23,326 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) 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) [2025-04-25 03:48:23,326 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 03:48:23,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-25 03:48:23,396 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-25 03:48:23,397 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)] === [2025-04-25 03:48:23,397 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 03:48:23,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1038109440, now seen corresponding path program 1 times [2025-04-25 03:48:23,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 03:48:23,398 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141686688] [2025-04-25 03:48:23,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 03:48:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 03:48:23,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-25 03:48:23,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-25 03:48:23,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 03:48:23,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 03:48:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 03:48:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 03:48:23,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141686688] [2025-04-25 03:48:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141686688] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-25 03:48:23,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476959531] [2025-04-25 03:48:23,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 03:48:23,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-25 03:48:23,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 03:48:23,645 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) [2025-04-25 03:48:23,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-25 03:48:23,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-25 03:48:23,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-25 03:48:23,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 03:48:23,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 03:48:23,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-25 03:48:23,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-25 03:48:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 03:48:23,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-25 03:48:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 03:48:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476959531] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-25 03:48:24,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-25 03:48:24,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-04-25 03:48:24,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689854686] [2025-04-25 03:48:24,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-25 03:48:24,021 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-25 03:48:24,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 03:48:24,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-25 03:48:24,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-25 03:48:24,023 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 03:48:24,023 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 03:48:24,023 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 16 states have internal predecessors, (45), 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) [2025-04-25 03:48:24,023 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-25 03:48:24,024 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 03:48:24,161 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-25 03:48:24,162 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-25 03:48:24,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-25 03:48:24,362 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-04-25 03:48:24,362 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)] === [2025-04-25 03:48:24,363 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 03:48:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash 528233405, now seen corresponding path program 2 times [2025-04-25 03:48:24,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 03:48:24,363 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482087265] [2025-04-25 03:48:24,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-25 03:48:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 03:48:24,371 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-25 03:48:24,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 24 statements. [2025-04-25 03:48:24,380 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-25 03:48:24,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 03:48:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-25 03:48:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 03:48:24,489 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482087265] [2025-04-25 03:48:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482087265] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 03:48:24,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 03:48:24,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-25 03:48:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432920466] [2025-04-25 03:48:24,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 03:48:24,489 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-25 03:48:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 03:48:24,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-25 03:48:24,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-25 03:48:24,491 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 03:48:24,491 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 03:48:24,491 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2025-04-25 03:48:24,491 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-25 03:48:24,491 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-25 03:48:24,491 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 03:48:24,597 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-25 03:48:24,597 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-25 03:48:24,598 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-25 03:48:24,598 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-25 03:48:24,598 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)] === [2025-04-25 03:48:24,598 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 03:48:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1089000873, now seen corresponding path program 3 times [2025-04-25 03:48:24,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 03:48:24,599 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116785553] [2025-04-25 03:48:24,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-25 03:48:24,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 03:48:24,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-04-25 03:48:24,666 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-25 03:48:24,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-25 03:48:24,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 03:48:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 03:48:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 03:48:25,555 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116785553] [2025-04-25 03:48:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116785553] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-25 03:48:25,555 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771079926] [2025-04-25 03:48:25,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-25 03:48:25,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-25 03:48:25,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 03:48:25,559 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) [2025-04-25 03:48:25,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-25 03:48:25,600 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-04-25 03:48:25,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-25 03:48:25,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-25 03:48:25,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 03:48:25,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-25 03:48:25,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-25 03:48:25,729 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 [2025-04-25 03:48:26,187 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-25 03:48:26,187 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2025-04-25 03:48:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 03:48:26,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-25 03:48:26,837 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 64 treesize of output 56 [2025-04-25 03:48:26,867 INFO L325 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2025-04-25 03:48:26,868 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 242 treesize of output 194 [2025-04-25 03:48:31,861 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:31,941 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:32,152 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:32,218 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:32,351 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:32,479 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:32,634 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:35,017 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:35,137 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:48:56,124 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:49:05,113 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:49:05,202 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:49:07,336 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:49:09,753 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:49:48,016 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:49:48,867 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-25 03:50:04,624 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:50:12,711 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:51:23,906 WARN L286 SmtUtils]: Spent 14.83s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:52:26,319 WARN L286 SmtUtils]: Spent 12.77s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:52:39,376 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:52:51,048 WARN L286 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:53:01,657 WARN L286 SmtUtils]: Spent 6.46s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:53:10,329 WARN L286 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:53:39,558 WARN L286 SmtUtils]: Spent 6.98s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:54:00,426 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:54:56,814 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:55:11,308 WARN L286 SmtUtils]: Spent 11.91s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-04-25 03:55:28,173 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 726] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)