./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i -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 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-17 10:21:28,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-17 10:21:28,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-17 10:21:28,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-17 10:21:28,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-17 10:21:28,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-17 10:21:28,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-17 10:21:28,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-17 10:21:28,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-17 10:21:28,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-17 10:21:28,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-17 10:21:28,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-17 10:21:28,911 INFO L153 SettingsManager]: * Use SBE=true [2024-10-17 10:21:28,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-17 10:21:28,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-17 10:21:28,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-17 10:21:28,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-17 10:21:28,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-17 10:21:28,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-17 10:21:28,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-17 10:21:28,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-17 10:21:28,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-17 10:21:28,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-17 10:21:28,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-17 10:21:28,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-17 10:21:28,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-17 10:21:28,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-17 10:21:28,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-17 10:21:28,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-17 10:21:28,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-17 10:21:28,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 10:21:28,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-17 10:21:28,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-17 10:21:28,920 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-17 10:21:28,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-17 10:21:28,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-17 10:21:28,921 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-17 10:21:28,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-17 10:21:28,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-17 10:21:28,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-17 10:21:28,922 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-17 10:21:28,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> SLEEP_SET [2024-10-17 10:21:29,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-17 10:21:29,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-17 10:21:29,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-17 10:21:29,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-17 10:21:29,143 INFO L274 PluginConnector]: CDTParser initialized [2024-10-17 10:21:29,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i [2024-10-17 10:21:30,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-17 10:21:30,532 INFO L384 CDTParser]: Found 1 translation units. [2024-10-17 10:21:30,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i [2024-10-17 10:21:30,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/8a70c111a/2aa84bb0c5274ce1b883e1c3986f976d/FLAG8b84892af [2024-10-17 10:21:30,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/8a70c111a/2aa84bb0c5274ce1b883e1c3986f976d [2024-10-17 10:21:30,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-17 10:21:30,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-17 10:21:30,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-17 10:21:30,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-17 10:21:30,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-17 10:21:30,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5351ac98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30, skipping insertion in model container [2024-10-17 10:21:30,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-17 10:21:30,862 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i[30438,30451] [2024-10-17 10:21:30,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 10:21:30,876 INFO L200 MainTranslator]: Completed pre-run [2024-10-17 10:21:30,919 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i[30438,30451] [2024-10-17 10:21:30,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 10:21:30,952 INFO L204 MainTranslator]: Completed translation [2024-10-17 10:21:30,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30 WrapperNode [2024-10-17 10:21:30,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-17 10:21:30,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-17 10:21:30,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-17 10:21:30,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-17 10:21:30,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,988 INFO L138 Inliner]: procedures = 169, calls = 14, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 78 [2024-10-17 10:21:30,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-17 10:21:30,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-17 10:21:30,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-17 10:21:30,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-17 10:21:30,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:30,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:31,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:31,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:31,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:31,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:31,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-17 10:21:31,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-17 10:21:31,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-17 10:21:31,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-17 10:21:31,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (1/1) ... [2024-10-17 10:21:31,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 10:21:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:31,044 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) [2024-10-17 10:21:31,046 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 [2024-10-17 10:21:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-17 10:21:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-17 10:21:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-17 10:21:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-17 10:21:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-17 10:21:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-17 10:21:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-17 10:21:31,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-17 10:21:31,082 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-17 10:21:31,171 INFO L238 CfgBuilder]: Building ICFG [2024-10-17 10:21:31,173 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-17 10:21:31,284 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-17 10:21:31,284 INFO L287 CfgBuilder]: Performing block encoding [2024-10-17 10:21:31,347 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-17 10:21:31,347 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-17 10:21:31,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:31 BoogieIcfgContainer [2024-10-17 10:21:31,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-17 10:21:31,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-17 10:21:31,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-17 10:21:31,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-17 10:21:31,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:21:30" (1/3) ... [2024-10-17 10:21:31,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f632ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:31, skipping insertion in model container [2024-10-17 10:21:31,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:30" (2/3) ... [2024-10-17 10:21:31,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f632ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:31, skipping insertion in model container [2024-10-17 10:21:31,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:31" (3/3) ... [2024-10-17 10:21:31,358 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2024-10-17 10:21:31,371 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-17 10:21:31,371 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-17 10:21:31,371 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-17 10:21:31,401 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:21:31,458 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:31,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:31,469 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) [2024-10-17 10:21:31,474 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 [2024-10-17 10:21:31,569 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:31,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:31,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ======== [2024-10-17 10:21:31,593 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:31,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:21:31,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:31,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1884513198, now seen corresponding path program 1 times [2024-10-17 10:21:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862064725] [2024-10-17 10:21:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 10:21:31,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:31,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862064725] [2024-10-17 10:21:31,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862064725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:31,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:31,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:31,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727068490] [2024-10-17 10:21:31,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:31,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:31,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:31,995 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:31,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-17 10:21:31,996 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:32,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-17 10:21:32,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:32,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2109569641, now seen corresponding path program 1 times [2024-10-17 10:21:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344088841] [2024-10-17 10:21:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344088841] [2024-10-17 10:21:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344088841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828291752] [2024-10-17 10:21:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:32,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:32,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:32,276 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) [2024-10-17 10:21:32,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-17 10:21:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:32,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:21:32,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:32,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:32,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828291752] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:32,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:32,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:21:32,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746859394] [2024-10-17 10:21:32,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:32,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:21:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:21:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:21:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:32,516 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:32,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-10-17 10:21:32,517 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:32,517 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:32,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-17 10:21:32,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-17 10:21:32,794 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:32,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 346051652, now seen corresponding path program 2 times [2024-10-17 10:21:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797811847] [2024-10-17 10:21:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:32,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797811847] [2024-10-17 10:21:32,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797811847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:32,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694738323] [2024-10-17 10:21:32,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 10:21:32,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:32,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:32,940 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) [2024-10-17 10:21:32,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-17 10:21:32,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 10:21:32,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 10:21:32,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-17 10:21:33,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:33,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:33,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694738323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:33,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:33,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-17 10:21:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035526608] [2024-10-17 10:21:33,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:33,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:21:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:21:33,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:21:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:33,183 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:33,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-10-17 10:21:33,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:33,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:33,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-17 10:21:33,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-17 10:21:33,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:33,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:33,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash 405323273, now seen corresponding path program 3 times [2024-10-17 10:21:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:33,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465240162] [2024-10-17 10:21:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:33,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:33,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465240162] [2024-10-17 10:21:33,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465240162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011977369] [2024-10-17 10:21:33,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 10:21:33,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:33,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:33,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:21:33,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-17 10:21:33,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-17 10:21:33,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 10:21:33,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 10:21:33,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-17 10:21:33,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-17 10:21:33,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011977369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:33,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 10:21:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852470042] [2024-10-17 10:21:33,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:33,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:21:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:21:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:21:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:33,850 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:33,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 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) [2024-10-17 10:21:33,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:33,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:33,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-10-17 10:21:33,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-17 10:21:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:34,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:21:34,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-17 10:21:34,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:34,449 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 10:21:34,450 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/2) [2024-10-17 10:21:34,453 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:34,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:34,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2024-10-17 10:21:34,480 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:34,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:34,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 10:21:34,481 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:34,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 10:21:34,522 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:34,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash -390178135, now seen corresponding path program 1 times [2024-10-17 10:21:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569760559] [2024-10-17 10:21:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 10:21:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569760559] [2024-10-17 10:21:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569760559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:34,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606565515] [2024-10-17 10:21:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:34,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-17 10:21:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-17 10:21:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-17 10:21:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,535 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:34,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2024-10-17 10:21:34,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-17 10:21:34,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:34,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:34,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1297486613, now seen corresponding path program 1 times [2024-10-17 10:21:34,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:34,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068436188] [2024-10-17 10:21:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:34,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 10:21:34,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:34,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068436188] [2024-10-17 10:21:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068436188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746612476] [2024-10-17 10:21:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:34,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,592 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:34,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-17 10:21:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:34,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-17 10:21:34,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:34,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash 685935045, now seen corresponding path program 1 times [2024-10-17 10:21:34,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674230681] [2024-10-17 10:21:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:21:34,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 10:21:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:21:34,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 10:21:34,702 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 10:21:34,703 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 10:21:34,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 10:21:34,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-17 10:21:34,706 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-17 10:21:34,707 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2024-10-17 10:21:34,708 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 10:21:34,708 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-17 10:21:34,720 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:21:34,722 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:34,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:34,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:34,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:34,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2024-10-17 10:21:34,758 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:34,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:34,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 10:21:34,759 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:34,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 10:21:34,894 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:34,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash -146872257, now seen corresponding path program 1 times [2024-10-17 10:21:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066321273] [2024-10-17 10:21:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 10:21:34,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066321273] [2024-10-17 10:21:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066321273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:34,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:34,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:34,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609312410] [2024-10-17 10:21:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:34,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-17 10:21:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-17 10:21:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-17 10:21:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:34,910 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:34,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-10-17 10:21:34,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-17 10:21:35,042 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:35,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1091789237, now seen corresponding path program 1 times [2024-10-17 10:21:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647760966] [2024-10-17 10:21:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-17 10:21:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647760966] [2024-10-17 10:21:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647760966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:35,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872716397] [2024-10-17 10:21:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:35,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:35,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,089 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:35,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:21:35,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-17 10:21:35,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:35,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 885628233, now seen corresponding path program 1 times [2024-10-17 10:21:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448091724] [2024-10-17 10:21:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:35,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-17 10:21:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448091724] [2024-10-17 10:21:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448091724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:35,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:35,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-17 10:21:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840635384] [2024-10-17 10:21:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:35,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,225 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:35,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-10-17 10:21:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-17 10:21:35,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:35,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash 37139054, now seen corresponding path program 1 times [2024-10-17 10:21:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:35,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208498455] [2024-10-17 10:21:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:35,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:35,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208498455] [2024-10-17 10:21:35,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208498455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:35,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675100782] [2024-10-17 10:21:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:35,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:35,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:21:35,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-17 10:21:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:35,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:21:35,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:35,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675100782] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:35,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:21:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593857042] [2024-10-17 10:21:35,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:35,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:21:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:21:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:21:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,488 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:35,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:21:35,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 10:21:35,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-17 10:21:35,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-17 10:21:35,762 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:35,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1369173098, now seen corresponding path program 1 times [2024-10-17 10:21:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656640424] [2024-10-17 10:21:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:21:35,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 10:21:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:21:35,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 10:21:35,780 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 10:21:35,780 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 10:21:35,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 10:21:35,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-17 10:21:35,781 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-17 10:21:35,782 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/3) [2024-10-17 10:21:35,782 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 10:21:35,782 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-17 10:21:35,794 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:21:35,798 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:35,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:35,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:35,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:35,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-10-17 10:21:35,831 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:35,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:35,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork1 ======== [2024-10-17 10:21:35,832 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:35,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:21:35,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:21:35,835 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:21:35,835 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork1 was SAFE (1/4) [2024-10-17 10:21:35,837 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:35,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:35,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:35,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:35,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2024-10-17 10:21:35,869 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:35,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:35,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 10:21:35,869 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:35,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 10:21:36,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:36,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 67326709, now seen corresponding path program 1 times [2024-10-17 10:21:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442911141] [2024-10-17 10:21:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 10:21:36,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442911141] [2024-10-17 10:21:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442911141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:36,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:36,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:36,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979454476] [2024-10-17 10:21:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:36,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-17 10:21:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-17 10:21:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-17 10:21:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,078 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:36,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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) [2024-10-17 10:21:36,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-17 10:21:36,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:36,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1836380900, now seen corresponding path program 1 times [2024-10-17 10:21:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770043157] [2024-10-17 10:21:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-17 10:21:36,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770043157] [2024-10-17 10:21:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770043157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771012101] [2024-10-17 10:21:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:36,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,427 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:36,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-10-17 10:21:36,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-17 10:21:36,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:36,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash 554085214, now seen corresponding path program 1 times [2024-10-17 10:21:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:36,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256455045] [2024-10-17 10:21:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-17 10:21:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:36,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256455045] [2024-10-17 10:21:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256455045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:36,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-17 10:21:36,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234172895] [2024-10-17 10:21:36,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:36,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:36,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:36,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:36,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,569 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:36,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:21:36,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-17 10:21:36,590 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:36,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash 109243250, now seen corresponding path program 1 times [2024-10-17 10:21:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16651387] [2024-10-17 10:21:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 10:21:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:36,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16651387] [2024-10-17 10:21:36,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16651387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:36,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892832594] [2024-10-17 10:21:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:36,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:36,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:36,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:21:36,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-17 10:21:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:36,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:21:36,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 10:21:36,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 10:21:36,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892832594] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:36,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:21:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040276065] [2024-10-17 10:21:36,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:36,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:21:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:21:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:21:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,784 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:36,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-10-17 10:21:36,784 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,784 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,784 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,784 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:36,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-17 10:21:37,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-17 10:21:37,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:37,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -528085156, now seen corresponding path program 1 times [2024-10-17 10:21:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110722611] [2024-10-17 10:21:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 10:21:37,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:37,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110722611] [2024-10-17 10:21:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110722611] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:37,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214287265] [2024-10-17 10:21:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:37,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:37,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:37,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:21:37,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-17 10:21:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:37,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 10:21:37,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 10:21:37,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 10:21:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214287265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:37,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:37,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 10:21:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977568441] [2024-10-17 10:21:37,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:37,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:21:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:37,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:21:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:21:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:37,369 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:37,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-10-17 10:21:37,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:37,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:37,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:37,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:37,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:37,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-17 10:21:37,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-17 10:21:37,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:21:37,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash -872841416, now seen corresponding path program 1 times [2024-10-17 10:21:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:37,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26523862] [2024-10-17 10:21:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:21:37,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 10:21:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:21:37,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 10:21:37,731 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 10:21:37,731 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 10:21:37,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 10:21:37,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-17 10:21:37,734 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-17 10:21:37,735 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/4) [2024-10-17 10:21:37,735 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 10:21:37,735 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-17 10:21:37,752 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:21:37,754 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:37,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:37,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:37,757 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:37,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2024-10-17 10:21:37,787 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:37,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:37,788 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork1 ======== [2024-10-17 10:21:37,788 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:37,788 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:21:37,789 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:21:37,791 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:21:37,791 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of4ForFork1 was SAFE (1/5) [2024-10-17 10:21:37,794 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:37,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:37,796 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:37,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2024-10-17 10:21:37,829 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:37,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:37,830 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread4of4ForFork1 ======== [2024-10-17 10:21:37,832 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:37,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:21:37,833 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:21:37,835 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:21:37,835 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread4of4ForFork1 was SAFE (2/5) [2024-10-17 10:21:37,838 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:37,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:37,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:37,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2024-10-17 10:21:37,872 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:37,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:37,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of4ForFork1 ======== [2024-10-17 10:21:37,873 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:37,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:21:37,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:21:37,875 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:21:37,875 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread2of4ForFork1 was SAFE (3/5) [2024-10-17 10:21:37,878 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:37,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:37,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:37,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-10-17 10:21:37,916 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:37,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:37,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of4ForFork1 ======== [2024-10-17 10:21:37,917 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:37,917 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:21:38,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:38,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1937061419, now seen corresponding path program 1 times [2024-10-17 10:21:38,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:38,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25537496] [2024-10-17 10:21:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:38,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 10:21:38,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:38,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25537496] [2024-10-17 10:21:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25537496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:21:38,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:21:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:21:38,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375255987] [2024-10-17 10:21:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:21:38,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:21:38,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:38,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:21:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:21:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:38,111 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:38,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-17 10:21:38,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:38,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-17 10:21:38,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:38,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash -844406139, now seen corresponding path program 1 times [2024-10-17 10:21:38,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:38,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172964251] [2024-10-17 10:21:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:38,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172964251] [2024-10-17 10:21:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172964251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367343026] [2024-10-17 10:21:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:38,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:38,468 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:21:38,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-17 10:21:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:38,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:21:38,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:38,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:21:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367343026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:38,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:38,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:21:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647339060] [2024-10-17 10:21:38,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:38,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:21:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:21:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:21:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:38,647 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:38,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:21:38,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:38,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:38,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-17 10:21:39,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:39,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:21:39,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2059182791, now seen corresponding path program 1 times [2024-10-17 10:21:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:21:39,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809902007] [2024-10-17 10:21:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:39,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:21:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 10:21:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:21:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809902007] [2024-10-17 10:21:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809902007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:21:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708935360] [2024-10-17 10:21:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:21:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:39,157 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:21:39,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-17 10:21:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:21:39,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 10:21:39,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:21:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 10:21:39,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:21:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 10:21:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708935360] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:21:39,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:21:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 10:21:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555533998] [2024-10-17 10:21:39,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:21:39,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:21:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:21:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:21:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:21:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:39,376 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:21:39,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 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) [2024-10-17 10:21:39,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:39,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:39,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:21:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:21:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:21:59,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:21:59,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-17 10:21:59,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:21:59,863 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-17 10:21:59,865 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of4ForFork1 was SAFE (4/5) [2024-10-17 10:21:59,867 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:21:59,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:21:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:21:59,868 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:21:59,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2024-10-17 10:21:59,899 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:21:59,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:21:59,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 10:21:59,900 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:21:59,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 10:22:00,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:00,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1866864201, now seen corresponding path program 1 times [2024-10-17 10:22:00,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:00,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080973734] [2024-10-17 10:22:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 10:22:00,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080973734] [2024-10-17 10:22:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080973734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:22:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912234546] [2024-10-17 10:22:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:00,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-17 10:22:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-17 10:22:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-17 10:22:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,201 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:00,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2024-10-17 10:22:00,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-17 10:22:00,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:00,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash 900932117, now seen corresponding path program 1 times [2024-10-17 10:22:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:00,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268706992] [2024-10-17 10:22:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:00,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-17 10:22:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268706992] [2024-10-17 10:22:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268706992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:22:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318726994] [2024-10-17 10:22:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:22:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:22:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:22:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,822 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:00,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-10-17 10:22:00,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:00,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-17 10:22:00,943 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:00,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1099644713, now seen corresponding path program 1 times [2024-10-17 10:22:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856577751] [2024-10-17 10:22:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-17 10:22:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856577751] [2024-10-17 10:22:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856577751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:00,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-17 10:22:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017094271] [2024-10-17 10:22:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:00,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:22:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:22:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:22:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,986 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:00,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2024-10-17 10:22:00,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:00,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:00,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-17 10:22:01,007 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:01,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1005775587, now seen corresponding path program 1 times [2024-10-17 10:22:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069241271] [2024-10-17 10:22:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-17 10:22:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069241271] [2024-10-17 10:22:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069241271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:22:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10400338] [2024-10-17 10:22:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:01,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:01,054 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:22:01,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-17 10:22:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:01,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:22:01,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:22:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-17 10:22:01,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:22:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-17 10:22:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10400338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:22:01,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:22:01,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:22:01,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128382290] [2024-10-17 10:22:01,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:22:01,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:22:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:22:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:22:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,230 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:01,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-10-17 10:22:01,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:01,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-17 10:22:01,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:01,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:01,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:01,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1993306621, now seen corresponding path program 1 times [2024-10-17 10:22:01,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:01,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288587146] [2024-10-17 10:22:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-17 10:22:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288587146] [2024-10-17 10:22:01,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288587146] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:22:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077184919] [2024-10-17 10:22:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:01,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:01,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:22:01,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-17 10:22:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:01,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 10:22:01,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:22:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 10:22:01,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:22:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 10:22:01,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077184919] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:22:01,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:22:01,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 10:22:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951173753] [2024-10-17 10:22:01,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:22:01,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:22:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:22:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:22:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,824 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:01,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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) [2024-10-17 10:22:01,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:01,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:01,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-17 10:22:02,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-17 10:22:02,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:02,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:02,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1791857802, now seen corresponding path program 1 times [2024-10-17 10:22:02,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:02,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409696629] [2024-10-17 10:22:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:02,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:22:02,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 10:22:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:22:02,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 10:22:02,221 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 10:22:02,221 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 10:22:02,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 10:22:02,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-17 10:22:02,223 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-17 10:22:02,223 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (5/5) [2024-10-17 10:22:02,223 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 10:22:02,223 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-17 10:22:02,242 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:22:02,244 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:02,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:02,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:02,246 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:02,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2024-10-17 10:22:02,278 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:02,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:02,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of5ForFork1 ======== [2024-10-17 10:22:02,279 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:02,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:22:02,279 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:22:02,281 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:22:02,281 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread2of5ForFork1 was SAFE (1/6) [2024-10-17 10:22:02,282 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:02,285 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:02,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (23)] Waiting until timeout for monitored process [2024-10-17 10:22:02,317 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:02,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:02,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread5of5ForFork1 ======== [2024-10-17 10:22:02,318 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:02,318 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:22:02,318 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:22:02,320 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:22:02,320 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread5of5ForFork1 was SAFE (2/6) [2024-10-17 10:22:02,321 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:02,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:02,323 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:02,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2024-10-17 10:22:02,355 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:02,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:02,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 10:22:02,356 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:02,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 10:22:02,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:02,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -146269391, now seen corresponding path program 1 times [2024-10-17 10:22:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387526053] [2024-10-17 10:22:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 10:22:02,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:02,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387526053] [2024-10-17 10:22:02,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387526053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:02,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:02,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:22:02,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645254884] [2024-10-17 10:22:02,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:02,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-17 10:22:02,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-17 10:22:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-17 10:22:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:02,746 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:02,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-10-17 10:22:02,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-17 10:22:03,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:03,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2134930124, now seen corresponding path program 1 times [2024-10-17 10:22:03,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:03,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108817237] [2024-10-17 10:22:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:03,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-17 10:22:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108817237] [2024-10-17 10:22:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108817237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:22:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384266738] [2024-10-17 10:22:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:03,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:22:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:22:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:22:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,616 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:03,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-10-17 10:22:03,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:03,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-17 10:22:03,735 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:03,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1525923914, now seen corresponding path program 1 times [2024-10-17 10:22:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:03,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722839397] [2024-10-17 10:22:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:03,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-17 10:22:03,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:03,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722839397] [2024-10-17 10:22:03,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722839397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:03,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:03,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-17 10:22:03,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088852227] [2024-10-17 10:22:03,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:03,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:22:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:22:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:22:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,770 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:03,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-10-17 10:22:03,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:03,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:03,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-17 10:22:03,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:03,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1742544307, now seen corresponding path program 1 times [2024-10-17 10:22:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:03,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915167219] [2024-10-17 10:22:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-17 10:22:03,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:03,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915167219] [2024-10-17 10:22:03,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915167219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:22:03,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146286828] [2024-10-17 10:22:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:03,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:03,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:03,827 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:22:03,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-17 10:22:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:03,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:22:03,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:22:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-17 10:22:03,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:22:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-17 10:22:03,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146286828] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:22:03,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:22:03,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:22:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813328939] [2024-10-17 10:22:03,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:22:03,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:22:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:22:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:22:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,990 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:03,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:22:03,990 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:03,990 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:03,990 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:03,990 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:04,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-17 10:22:04,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:04,273 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:04,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -402101357, now seen corresponding path program 1 times [2024-10-17 10:22:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:04,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289235455] [2024-10-17 10:22:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:04,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-17 10:22:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289235455] [2024-10-17 10:22:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289235455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:22:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552884359] [2024-10-17 10:22:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:04,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:04,323 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:22:04,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-17 10:22:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:04,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 10:22:04,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:22:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-17 10:22:04,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:22:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-17 10:22:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552884359] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:22:04,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:22:04,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 10:22:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815141973] [2024-10-17 10:22:04,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:22:04,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:22:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:22:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:22:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:04,553 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:04,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:22:04,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:04,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:04,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:04,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:04,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:04,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-17 10:22:04,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-17 10:22:04,972 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 10:22:04,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2096530010, now seen corresponding path program 1 times [2024-10-17 10:22:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868631544] [2024-10-17 10:22:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:22:04,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 10:22:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:22:05,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 10:22:05,003 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 10:22:05,003 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 10:22:05,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 10:22:05,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-17 10:22:05,004 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-17 10:22:05,005 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/6) [2024-10-17 10:22:05,005 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 10:22:05,005 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-17 10:22:05,022 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:22:05,024 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:05,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:05,025 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:05,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (27)] Waiting until timeout for monitored process [2024-10-17 10:22:05,059 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:05,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:05,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of6ForFork1 ======== [2024-10-17 10:22:05,059 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:05,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:22:05,060 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:22:05,061 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:22:05,061 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread2of6ForFork1 was SAFE (1/7) [2024-10-17 10:22:05,062 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:05,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:05,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:05,063 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:05,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (28)] Waiting until timeout for monitored process [2024-10-17 10:22:05,097 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:05,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:05,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread5of6ForFork1 ======== [2024-10-17 10:22:05,097 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:05,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:22:05,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:22:05,098 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:22:05,098 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread5of6ForFork1 was SAFE (2/7) [2024-10-17 10:22:05,099 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:05,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:05,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:05,101 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:05,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (29)] Waiting until timeout for monitored process [2024-10-17 10:22:05,132 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:05,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:05,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of6ForFork1 ======== [2024-10-17 10:22:05,132 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:05,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:22:05,133 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:22:05,134 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 10:22:05,134 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of6ForFork1 was SAFE (3/7) [2024-10-17 10:22:05,135 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:22:05,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:22:05,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:05,136 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 10:22:05,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (30)] Waiting until timeout for monitored process [2024-10-17 10:22:05,168 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:22:05,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:05,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of6ForFork1 ======== [2024-10-17 10:22:05,169 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7ab3fe2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:22:05,169 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:22:05,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:22:05,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1104389212, now seen corresponding path program 1 times [2024-10-17 10:22:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:05,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982486084] [2024-10-17 10:22:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 10:22:05,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982486084] [2024-10-17 10:22:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982486084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:22:05,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:22:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:22:05,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282187435] [2024-10-17 10:22:05,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:22:05,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:22:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:22:05,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:22:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:05,392 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:05,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-17 10:22:05,392 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:05,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-17 10:22:05,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:22:05,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1017871099, now seen corresponding path program 1 times [2024-10-17 10:22:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991673528] [2024-10-17 10:22:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:05,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:22:05,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991673528] [2024-10-17 10:22:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991673528] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:22:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143464889] [2024-10-17 10:22:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:05,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:05,813 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:22:05,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-17 10:22:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:05,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 10:22:05,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:22:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:22:05,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:22:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 10:22:05,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143464889] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:22:05,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:22:05,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 10:22:05,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365133955] [2024-10-17 10:22:05,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:22:05,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 10:22:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 10:22:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-17 10:22:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:05,966 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:05,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 10:22:05,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:05,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:06,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-17 10:22:06,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-17 10:22:06,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:22:06,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:22:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash 932175012, now seen corresponding path program 1 times [2024-10-17 10:22:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:22:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637967160] [2024-10-17 10:22:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:22:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 10:22:06,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:22:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637967160] [2024-10-17 10:22:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637967160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 10:22:06,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776524810] [2024-10-17 10:22:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:22:06,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 10:22:06,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:22:06,472 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 10:22:06,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-17 10:22:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:22:06,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 10:22:06,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 10:22:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 10:22:06,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 10:22:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 10:22:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776524810] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 10:22:06,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 10:22:06,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 10:22:06,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402381500] [2024-10-17 10:22:06,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 10:22:06,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 10:22:06,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:22:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 10:22:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 10:22:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:22:06,668 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:22:06,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 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) [2024-10-17 10:22:06,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:22:06,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:22:06,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.