./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dfe144c0 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/goblint-regression/28-race_reach_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-dfe144c-m [2024-07-20 20:26:01,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-20 20:26:01,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-07-20 20:26:01,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-20 20:26:01,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-20 20:26:01,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-20 20:26:01,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-20 20:26:01,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-20 20:26:01,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-20 20:26:01,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-20 20:26:01,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-20 20:26:01,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-20 20:26:01,497 INFO L153 SettingsManager]: * Use SBE=true [2024-07-20 20:26:01,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-20 20:26:01,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-20 20:26:01,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-20 20:26:01,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-07-20 20:26:01,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-20 20:26:01,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-20 20:26:01,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-20 20:26:01,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-20 20:26:01,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-20 20:26:01,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-20 20:26:01,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-20 20:26:01,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-20 20:26:01,501 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-20 20:26:01,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-20 20:26:01,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-20 20:26:01,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-20 20:26:01,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-20 20:26:01,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 20:26:01,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-20 20:26:01,503 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-20 20:26:01,504 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-20 20:26:01,504 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-20 20:26:01,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2024-07-20 20:26:01,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-20 20:26:01,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-20 20:26:01,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-20 20:26:01,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-20 20:26:01,724 INFO L274 PluginConnector]: CDTParser initialized [2024-07-20 20:26:01,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2024-07-20 20:26:02,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-20 20:26:02,815 INFO L384 CDTParser]: Found 1 translation units. [2024-07-20 20:26:02,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2024-07-20 20:26:02,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a824984f7/8374b3a7bd694dd58afeecff59ba055a/FLAGccca76082 [2024-07-20 20:26:02,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a824984f7/8374b3a7bd694dd58afeecff59ba055a [2024-07-20 20:26:02,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-20 20:26:02,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-20 20:26:02,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-20 20:26:02,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-20 20:26:02,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-20 20:26:02,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:26:02" (1/1) ... [2024-07-20 20:26:02,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734b89ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:02, skipping insertion in model container [2024-07-20 20:26:02,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:26:02" (1/1) ... [2024-07-20 20:26:02,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-20 20:26:03,146 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2024-07-20 20:26:03,174 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 20:26:03,183 INFO L202 MainTranslator]: Completed pre-run [2024-07-20 20:26:03,213 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2024-07-20 20:26:03,220 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 20:26:03,267 INFO L206 MainTranslator]: Completed translation [2024-07-20 20:26:03,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03 WrapperNode [2024-07-20 20:26:03,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-20 20:26:03,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-20 20:26:03,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-20 20:26:03,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-20 20:26:03,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,300 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-07-20 20:26:03,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-20 20:26:03,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-20 20:26:03,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-20 20:26:03,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-20 20:26:03,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-20 20:26:03,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-20 20:26:03,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-20 20:26:03,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-20 20:26:03,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (1/1) ... [2024-07-20 20:26:03,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 20:26:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:03,356 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) [2024-07-20 20:26:03,358 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 [2024-07-20 20:26:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-07-20 20:26:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-07-20 20:26:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-07-20 20:26:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-20 20:26:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-07-20 20:26:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-07-20 20:26:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-07-20 20:26:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-07-20 20:26:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-07-20 20:26:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-07-20 20:26:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-20 20:26:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-20 20:26:03,390 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-20 20:26:03,483 INFO L244 CfgBuilder]: Building ICFG [2024-07-20 20:26:03,484 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-20 20:26:03,603 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-20 20:26:03,603 INFO L293 CfgBuilder]: Performing block encoding [2024-07-20 20:26:03,701 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-20 20:26:03,702 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-07-20 20:26:03,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:26:03 BoogieIcfgContainer [2024-07-20 20:26:03,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-20 20:26:03,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-20 20:26:03,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-20 20:26:03,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-20 20:26:03,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 08:26:02" (1/3) ... [2024-07-20 20:26:03,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add73c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:26:03, skipping insertion in model container [2024-07-20 20:26:03,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:26:03" (2/3) ... [2024-07-20 20:26:03,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add73c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:26:03, skipping insertion in model container [2024-07-20 20:26:03,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:26:03" (3/3) ... [2024-07-20 20:26:03,708 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2024-07-20 20:26:03,713 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-20 20:26:03,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-20 20:26:03,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-20 20:26:03,720 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-20 20:26:03,741 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-07-20 20:26:03,768 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:03,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:03,770 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) [2024-07-20 20:26:03,780 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 [2024-07-20 20:26:03,809 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:03,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:03,824 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:03,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:03,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:03,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash 827267552, now seen corresponding path program 1 times [2024-07-20 20:26:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:03,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658255708] [2024-07-20 20:26:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 20:26:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658255708] [2024-07-20 20:26:04,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658255708] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:04,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:04,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819861685] [2024-07-20 20:26:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:04,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,147 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:04,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-07-20 20:26:04,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-07-20 20:26:04,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:04,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash 550581246, now seen corresponding path program 1 times [2024-07-20 20:26:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982549567] [2024-07-20 20:26:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:04,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:04,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:04,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:04,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:04,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:04,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-07-20 20:26:04,281 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-07-20 20:26:04,282 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:04,282 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-07-20 20:26:04,300 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-07-20 20:26:04,305 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:04,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:04,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:04,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:04,353 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:04,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:04,353 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:04,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:04,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-07-20 20:26:04,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash 334895274, now seen corresponding path program 1 times [2024-07-20 20:26:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952588843] [2024-07-20 20:26:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-20 20:26:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952588843] [2024-07-20 20:26:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952588843] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787624639] [2024-07-20 20:26:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:04,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:04,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:04,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,489 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:04,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-07-20 20:26:04,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-07-20 20:26:04,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 103946751, now seen corresponding path program 1 times [2024-07-20 20:26:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800379502] [2024-07-20 20:26:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 20:26:04,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:04,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800379502] [2024-07-20 20:26:04,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800379502] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:04,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:04,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:04,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787379521] [2024-07-20 20:26:04,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:04,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:04,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:04,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:04,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,707 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:04,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2024-07-20 20:26:04,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-07-20 20:26:04,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:04,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1624501756, now seen corresponding path program 1 times [2024-07-20 20:26:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:04,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348660591] [2024-07-20 20:26:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-07-20 20:26:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348660591] [2024-07-20 20:26:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348660591] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:04,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:04,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-07-20 20:26:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25099713] [2024-07-20 20:26:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:04,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-07-20 20:26:04,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:04,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-07-20 20:26:04,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-07-20 20:26:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,921 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:04,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-07-20 20:26:04,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:04,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:04,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-07-20 20:26:04,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:04,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:04,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1512302075, now seen corresponding path program 1 times [2024-07-20 20:26:04,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:04,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982270932] [2024-07-20 20:26:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:04,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:05,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:05,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:05,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:05,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:05,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-07-20 20:26:05,016 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:05,016 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:05,017 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-07-20 20:26:05,040 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-07-20 20:26:05,042 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:05,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:05,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:05,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-07-20 20:26:05,047 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:05,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:05,047 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:05,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:05,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:05,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash 307488905, now seen corresponding path program 1 times [2024-07-20 20:26:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363453430] [2024-07-20 20:26:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-07-20 20:26:05,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:05,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363453430] [2024-07-20 20:26:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363453430] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:05,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:05,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:05,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81280521] [2024-07-20 20:26:05,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:05,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:05,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,174 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:05,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2024-07-20 20:26:05,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-07-20 20:26:05,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:05,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2114379075, now seen corresponding path program 1 times [2024-07-20 20:26:05,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298134963] [2024-07-20 20:26:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:05,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-07-20 20:26:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298134963] [2024-07-20 20:26:05,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298134963] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:05,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:05,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:05,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554731765] [2024-07-20 20:26:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,416 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:05,416 INFO L496 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) [2024-07-20 20:26:05,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,416 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:05,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-07-20 20:26:05,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:05,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1088564743, now seen corresponding path program 1 times [2024-07-20 20:26:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:05,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621234764] [2024-07-20 20:26:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-07-20 20:26:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621234764] [2024-07-20 20:26:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621234764] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:05,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397116111] [2024-07-20 20:26:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:05,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,612 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:05,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-07-20 20:26:05,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:05,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-07-20 20:26:05,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:05,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2071151197, now seen corresponding path program 1 times [2024-07-20 20:26:05,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:05,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093224911] [2024-07-20 20:26:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:05,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:05,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:05,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:05,683 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:05,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:05,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-07-20 20:26:05,684 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:05,685 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:05,685 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-07-20 20:26:05,699 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-07-20 20:26:05,701 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:05,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:05,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:05,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:05,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-07-20 20:26:05,705 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:05,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:05,706 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:05,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:05,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:05,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash -509000272, now seen corresponding path program 1 times [2024-07-20 20:26:05,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:05,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729424686] [2024-07-20 20:26:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:05,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-07-20 20:26:05,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:05,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729424686] [2024-07-20 20:26:05,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729424686] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:05,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:05,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:05,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139452860] [2024-07-20 20:26:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:05,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:05,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:05,856 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:05,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-07-20 20:26:05,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-07-20 20:26:06,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:06,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1715545970, now seen corresponding path program 1 times [2024-07-20 20:26:06,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:06,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815591509] [2024-07-20 20:26:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:06,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-07-20 20:26:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815591509] [2024-07-20 20:26:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815591509] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:06,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:06,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973503483] [2024-07-20 20:26:06,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:06,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,154 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:06,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-07-20 20:26:06,154 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,154 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-07-20 20:26:06,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1522438833, now seen corresponding path program 1 times [2024-07-20 20:26:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142200452] [2024-07-20 20:26:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-07-20 20:26:06,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:06,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142200452] [2024-07-20 20:26:06,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142200452] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:06,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:06,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:06,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260519467] [2024-07-20 20:26:06,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:06,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:06,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:06,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,417 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:06,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:06,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:06,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-07-20 20:26:06,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:06,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1606880661, now seen corresponding path program 1 times [2024-07-20 20:26:06,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:06,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347731354] [2024-07-20 20:26:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:06,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:06,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:06,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:06,538 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:06,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:06,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-07-20 20:26:06,540 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:06,540 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:06,540 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-07-20 20:26:06,563 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-07-20 20:26:06,565 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:06,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:06,567 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) [2024-07-20 20:26:06,570 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 [2024-07-20 20:26:06,572 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:06,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:06,572 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:06,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:06,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:06,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1423158086, now seen corresponding path program 1 times [2024-07-20 20:26:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762876483] [2024-07-20 20:26:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-07-20 20:26:06,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:06,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762876483] [2024-07-20 20:26:06,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762876483] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:06,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:06,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499532027] [2024-07-20 20:26:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:06,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:06,732 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:06,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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) [2024-07-20 20:26:06,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-07-20 20:26:07,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:07,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1893586578, now seen corresponding path program 1 times [2024-07-20 20:26:07,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:07,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180379565] [2024-07-20 20:26:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:07,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-07-20 20:26:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180379565] [2024-07-20 20:26:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180379565] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549911958] [2024-07-20 20:26:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:07,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,103 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-07-20 20:26:07,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:07,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-07-20 20:26:07,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:07,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash 936158212, now seen corresponding path program 1 times [2024-07-20 20:26:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973226368] [2024-07-20 20:26:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-07-20 20:26:07,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973226368] [2024-07-20 20:26:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973226368] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:07,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:07,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936723959] [2024-07-20 20:26:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:07,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,332 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:07,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-07-20 20:26:07,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:07,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-07-20 20:26:07,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:07,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 324684599, now seen corresponding path program 1 times [2024-07-20 20:26:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:07,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511812662] [2024-07-20 20:26:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:07,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:07,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:07,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:07,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:07,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-07-20 20:26:07,463 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:07,464 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:07,464 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-07-20 20:26:07,485 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-07-20 20:26:07,488 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:07,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:07,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:07,489 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) [2024-07-20 20:26:07,493 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 [2024-07-20 20:26:07,494 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:07,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:07,495 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:07,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:07,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:07,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1411927726, now seen corresponding path program 1 times [2024-07-20 20:26:07,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:07,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629835638] [2024-07-20 20:26:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:07,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-07-20 20:26:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629835638] [2024-07-20 20:26:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629835638] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:07,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006193988] [2024-07-20 20:26:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:07,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:07,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:07,668 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:07,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 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) [2024-07-20 20:26:07,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-07-20 20:26:08,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:08,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1426017486, now seen corresponding path program 1 times [2024-07-20 20:26:08,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:08,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172246089] [2024-07-20 20:26:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-07-20 20:26:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172246089] [2024-07-20 20:26:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172246089] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471467056] [2024-07-20 20:26:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,136 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:08,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:08,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:08,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-07-20 20:26:08,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:08,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash -621532253, now seen corresponding path program 1 times [2024-07-20 20:26:08,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:08,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072063563] [2024-07-20 20:26:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:08,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-07-20 20:26:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072063563] [2024-07-20 20:26:08,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072063563] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:08,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:08,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:08,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392332144] [2024-07-20 20:26:08,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:08,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,454 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:08,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-07-20 20:26:08,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:08,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:08,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-07-20 20:26:08,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:08,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:08,547 INFO L85 PathProgramCache]: Analyzing trace with hash 673119660, now seen corresponding path program 1 times [2024-07-20 20:26:08,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:08,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053879397] [2024-07-20 20:26:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:08,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:08,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:08,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:08,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:08,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:08,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:08,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-07-20 20:26:08,594 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:08,595 WARN L234 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:08,596 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-07-20 20:26:08,616 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2024-07-20 20:26:08,617 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:08,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:08,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:08,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:08,622 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:08,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:08,622 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:08,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:08,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-07-20 20:26:08,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:08,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1203811257, now seen corresponding path program 1 times [2024-07-20 20:26:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44256304] [2024-07-20 20:26:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-07-20 20:26:08,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44256304] [2024-07-20 20:26:08,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44256304] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:08,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:08,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633846282] [2024-07-20 20:26:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:08,853 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:08,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2024-07-20 20:26:08,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-07-20 20:26:09,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -82926653, now seen corresponding path program 1 times [2024-07-20 20:26:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008418137] [2024-07-20 20:26:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-07-20 20:26:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008418137] [2024-07-20 20:26:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008418137] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:09,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:09,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:09,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293428138] [2024-07-20 20:26:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:09,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:09,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,416 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:09,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-07-20 20:26:09,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:09,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-07-20 20:26:09,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:09,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash -132184043, now seen corresponding path program 1 times [2024-07-20 20:26:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:09,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676491862] [2024-07-20 20:26:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-07-20 20:26:09,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676491862] [2024-07-20 20:26:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676491862] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:09,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:09,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:09,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452405009] [2024-07-20 20:26:09,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:09,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:09,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,786 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:09,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-07-20 20:26:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:09,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-07-20 20:26:09,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:09,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash -931868976, now seen corresponding path program 1 times [2024-07-20 20:26:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:09,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916017190] [2024-07-20 20:26:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:09,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:09,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:09,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:09,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:09,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:09,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-07-20 20:26:09,960 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:09,960 WARN L234 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:09,960 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-07-20 20:26:09,985 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-07-20 20:26:09,987 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:09,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:09,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:09,988 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) [2024-07-20 20:26:09,992 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 [2024-07-20 20:26:09,993 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:09,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:09,994 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:09,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:10,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:10,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash -650346004, now seen corresponding path program 1 times [2024-07-20 20:26:10,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:10,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377596172] [2024-07-20 20:26:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-07-20 20:26:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377596172] [2024-07-20 20:26:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377596172] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:10,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:10,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457924426] [2024-07-20 20:26:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:10,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:10,257 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:10,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2024-07-20 20:26:10,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:10,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-07-20 20:26:10,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:10,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash 202328148, now seen corresponding path program 1 times [2024-07-20 20:26:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:10,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608401773] [2024-07-20 20:26:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-07-20 20:26:10,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:10,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608401773] [2024-07-20 20:26:10,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608401773] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:10,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:10,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817343049] [2024-07-20 20:26:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:10,913 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:10,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-07-20 20:26:10,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:10,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-07-20 20:26:11,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:11,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash 513100616, now seen corresponding path program 1 times [2024-07-20 20:26:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951024605] [2024-07-20 20:26:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:11,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-07-20 20:26:11,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951024605] [2024-07-20 20:26:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951024605] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:11,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:11,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862338339] [2024-07-20 20:26:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,294 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:11,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-07-20 20:26:11,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:11,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:11,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-07-20 20:26:11,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:11,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -682133538, now seen corresponding path program 1 times [2024-07-20 20:26:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917093899] [2024-07-20 20:26:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:11,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:11,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:11,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:11,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:11,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-07-20 20:26:11,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:11,495 WARN L234 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:11,495 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2024-07-20 20:26:11,516 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-07-20 20:26:11,518 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:11,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:11,519 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) [2024-07-20 20:26:11,524 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:11,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:11,524 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:11,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:11,537 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 [2024-07-20 20:26:11,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:11,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash 339370176, now seen corresponding path program 1 times [2024-07-20 20:26:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:11,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785761778] [2024-07-20 20:26:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:11,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-07-20 20:26:11,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785761778] [2024-07-20 20:26:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785761778] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:11,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:11,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202284709] [2024-07-20 20:26:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:11,810 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:11,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:11,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-07-20 20:26:12,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:12,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:12,548 INFO L85 PathProgramCache]: Analyzing trace with hash -460246704, now seen corresponding path program 1 times [2024-07-20 20:26:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:12,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846770396] [2024-07-20 20:26:12,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:12,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-07-20 20:26:12,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846770396] [2024-07-20 20:26:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846770396] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:12,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:12,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875924365] [2024-07-20 20:26:12,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:12,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:12,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:12,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:12,669 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-07-20 20:26:12,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:12,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:12,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-07-20 20:26:12,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:12,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1905204022, now seen corresponding path program 1 times [2024-07-20 20:26:12,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543876745] [2024-07-20 20:26:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:12,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-07-20 20:26:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543876745] [2024-07-20 20:26:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543876745] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:13,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:13,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139466328] [2024-07-20 20:26:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:13,117 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:13,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-07-20 20:26:13,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:13,118 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:13,118 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-07-20 20:26:13,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:13,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1823067676, now seen corresponding path program 1 times [2024-07-20 20:26:13,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:13,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36260821] [2024-07-20 20:26:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:13,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:13,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:13,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:13,401 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:13,401 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:13,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:13,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-07-20 20:26:13,403 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:13,404 WARN L234 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:13,404 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2024-07-20 20:26:13,428 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-07-20 20:26:13,430 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:13,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:13,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:13,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:13,435 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:13,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:13,436 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:13,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:13,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2024-07-20 20:26:13,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:13,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1666332634, now seen corresponding path program 1 times [2024-07-20 20:26:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472373740] [2024-07-20 20:26:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-07-20 20:26:13,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472373740] [2024-07-20 20:26:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472373740] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:13,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40771237] [2024-07-20 20:26:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:13,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:13,765 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:13,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-07-20 20:26:13,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:14,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:14,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-07-20 20:26:14,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:14,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash 309261292, now seen corresponding path program 1 times [2024-07-20 20:26:14,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:14,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709369773] [2024-07-20 20:26:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-07-20 20:26:14,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709369773] [2024-07-20 20:26:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709369773] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:14,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:14,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761850477] [2024-07-20 20:26:14,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:14,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:14,698 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:14,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-07-20 20:26:14,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:14,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-07-20 20:26:14,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:14,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash 80909369, now seen corresponding path program 1 times [2024-07-20 20:26:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744737282] [2024-07-20 20:26:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-07-20 20:26:15,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744737282] [2024-07-20 20:26:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744737282] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230192602] [2024-07-20 20:26:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:15,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:15,146 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:15,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:15,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:15,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:15,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-07-20 20:26:15,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:15,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash -798268924, now seen corresponding path program 1 times [2024-07-20 20:26:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:15,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331953847] [2024-07-20 20:26:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:15,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:15,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:15,449 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:15,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:15,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:15,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-07-20 20:26:15,450 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:15,450 WARN L234 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:15,450 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2024-07-20 20:26:15,474 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2024-07-20 20:26:15,476 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:15,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:15,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:15,481 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:15,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:15,482 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:15,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:15,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2024-07-20 20:26:15,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:15,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash 298844149, now seen corresponding path program 1 times [2024-07-20 20:26:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:15,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395919044] [2024-07-20 20:26:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:15,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-07-20 20:26:15,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:15,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395919044] [2024-07-20 20:26:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395919044] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:15,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:15,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000776886] [2024-07-20 20:26:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:15,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:15,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:15,856 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:15,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-07-20 20:26:15,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-07-20 20:26:16,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:16,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash 222769458, now seen corresponding path program 1 times [2024-07-20 20:26:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990179774] [2024-07-20 20:26:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-07-20 20:26:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990179774] [2024-07-20 20:26:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990179774] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289974939] [2024-07-20 20:26:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:16,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:16,974 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:16,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2024-07-20 20:26:16,975 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:16,975 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-07-20 20:26:17,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:17,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash 932748668, now seen corresponding path program 1 times [2024-07-20 20:26:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688307196] [2024-07-20 20:26:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-07-20 20:26:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688307196] [2024-07-20 20:26:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688307196] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679356065] [2024-07-20 20:26:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:17,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:17,529 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:17,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-07-20 20:26:17,530 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:17,530 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:17,530 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:17,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-07-20 20:26:17,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:17,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash -587040796, now seen corresponding path program 1 times [2024-07-20 20:26:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:17,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402771891] [2024-07-20 20:26:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:17,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:17,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:17,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:17,881 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:17,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:17,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-07-20 20:26:17,884 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:17,884 WARN L234 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:17,885 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2024-07-20 20:26:17,912 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-07-20 20:26:17,923 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:17,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:17,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:17,925 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) [2024-07-20 20:26:17,927 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 [2024-07-20 20:26:17,928 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:17,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:17,929 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:17,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:18,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:18,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:18,324 INFO L85 PathProgramCache]: Analyzing trace with hash 305488288, now seen corresponding path program 1 times [2024-07-20 20:26:18,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:18,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334946609] [2024-07-20 20:26:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:18,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-07-20 20:26:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334946609] [2024-07-20 20:26:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334946609] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914288541] [2024-07-20 20:26:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:18,349 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:18,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2024-07-20 20:26:18,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-07-20 20:26:19,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:19,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash 934702232, now seen corresponding path program 1 times [2024-07-20 20:26:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204568064] [2024-07-20 20:26:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-07-20 20:26:19,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:19,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204568064] [2024-07-20 20:26:19,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204568064] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:19,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:19,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:19,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569930977] [2024-07-20 20:26:19,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:19,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:19,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:19,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:19,629 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-07-20 20:26:19,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:19,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:19,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-07-20 20:26:19,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:19,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:19,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1542670264, now seen corresponding path program 1 times [2024-07-20 20:26:19,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:19,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172931927] [2024-07-20 20:26:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:19,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-07-20 20:26:20,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:20,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172931927] [2024-07-20 20:26:20,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172931927] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:20,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353628959] [2024-07-20 20:26:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:20,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:20,228 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:20,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:20,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:20,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-07-20 20:26:20,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:20,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1444092011, now seen corresponding path program 1 times [2024-07-20 20:26:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28538519] [2024-07-20 20:26:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:20,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:20,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:20,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:20,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:20,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-07-20 20:26:20,583 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:20,583 WARN L234 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:20,584 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2024-07-20 20:26:20,612 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2024-07-20 20:26:20,614 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:20,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:20,616 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) [2024-07-20 20:26:20,620 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:20,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:20,621 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:20,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:20,629 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 [2024-07-20 20:26:21,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:21,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash -735976806, now seen corresponding path program 1 times [2024-07-20 20:26:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:21,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739824080] [2024-07-20 20:26:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-07-20 20:26:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:21,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739824080] [2024-07-20 20:26:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739824080] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:21,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:21,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:21,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285910155] [2024-07-20 20:26:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:21,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:21,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:21,171 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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) [2024-07-20 20:26:21,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:22,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-07-20 20:26:22,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:22,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1642964025, now seen corresponding path program 1 times [2024-07-20 20:26:22,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:22,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010718646] [2024-07-20 20:26:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-07-20 20:26:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010718646] [2024-07-20 20:26:22,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010718646] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:22,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:22,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169643347] [2024-07-20 20:26:22,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:22,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:22,538 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:22,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-07-20 20:26:22,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:22,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-07-20 20:26:22,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:22,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1810359238, now seen corresponding path program 1 times [2024-07-20 20:26:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63104469] [2024-07-20 20:26:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-07-20 20:26:23,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63104469] [2024-07-20 20:26:23,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63104469] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:23,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:23,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114967122] [2024-07-20 20:26:23,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:23,295 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:23,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:23,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:23,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:23,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:23,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-07-20 20:26:23,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash 962664203, now seen corresponding path program 1 times [2024-07-20 20:26:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934846547] [2024-07-20 20:26:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:23,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:23,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:23,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:23,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:23,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-07-20 20:26:23,731 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:23,731 WARN L234 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:23,732 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2024-07-20 20:26:23,762 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2024-07-20 20:26:23,764 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:23,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:23,766 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) [2024-07-20 20:26:23,768 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:23,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:23,768 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:23,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:23,782 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 [2024-07-20 20:26:24,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:24,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash 560901974, now seen corresponding path program 1 times [2024-07-20 20:26:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970274040] [2024-07-20 20:26:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-07-20 20:26:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970274040] [2024-07-20 20:26:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970274040] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:24,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086667743] [2024-07-20 20:26:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:24,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:24,364 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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) [2024-07-20 20:26:24,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:25,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-07-20 20:26:25,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:25,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1209168684, now seen corresponding path program 1 times [2024-07-20 20:26:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387622290] [2024-07-20 20:26:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:25,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-07-20 20:26:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387622290] [2024-07-20 20:26:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387622290] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:26,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898287165] [2024-07-20 20:26:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:26,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:26,089 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:26,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2024-07-20 20:26:26,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:26,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-07-20 20:26:26,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:26,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1920990826, now seen corresponding path program 1 times [2024-07-20 20:26:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386854593] [2024-07-20 20:26:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-07-20 20:26:26,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:26,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386854593] [2024-07-20 20:26:26,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386854593] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:26,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:26,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585328981] [2024-07-20 20:26:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:26,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:26,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:26,941 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:26,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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) [2024-07-20 20:26:26,941 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:26,941 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:26,941 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:27,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-07-20 20:26:27,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:27,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1864079643, now seen corresponding path program 1 times [2024-07-20 20:26:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161151668] [2024-07-20 20:26:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:27,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:27,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:27,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:27,416 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:27,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:27,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-07-20 20:26:27,417 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-20 20:26:27,417 WARN L234 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:27,417 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2024-07-20 20:26:27,447 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2024-07-20 20:26:27,449 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:27,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:27,450 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) [2024-07-20 20:26:27,452 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:27,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:27,453 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:27,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:27,462 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 [2024-07-20 20:26:27,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:27,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:27,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1528365213, now seen corresponding path program 1 times [2024-07-20 20:26:27,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:27,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067577119] [2024-07-20 20:26:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:27,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-07-20 20:26:28,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:28,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067577119] [2024-07-20 20:26:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067577119] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:28,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375340943] [2024-07-20 20:26:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:28,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:28,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:28,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:28,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:28,025 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:28,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:29,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-07-20 20:26:29,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:29,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash -948392695, now seen corresponding path program 1 times [2024-07-20 20:26:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352240302] [2024-07-20 20:26:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-07-20 20:26:29,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352240302] [2024-07-20 20:26:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352240302] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:29,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:29,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621794539] [2024-07-20 20:26:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:29,718 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:29,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2024-07-20 20:26:29,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:29,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:30,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-07-20 20:26:30,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:30,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1032447633, now seen corresponding path program 2 times [2024-07-20 20:26:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:30,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096996052] [2024-07-20 20:26:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-07-20 20:26:30,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:30,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096996052] [2024-07-20 20:26:30,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096996052] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:30,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:30,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869440957] [2024-07-20 20:26:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:30,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:30,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:30,702 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 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) [2024-07-20 20:26:30,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:30,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:30,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:31,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-07-20 20:26:31,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:31,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -467571179, now seen corresponding path program 1 times [2024-07-20 20:26:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:31,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400605286] [2024-07-20 20:26:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:31,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:31,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:31,306 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:31,306 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:31,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-07-20 20:26:31,308 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:26:31,308 WARN L234 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:31,308 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2024-07-20 20:26:31,347 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-07-20 20:26:31,350 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:31,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:31,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (17)] Waiting until timeout for monitored process [2024-07-20 20:26:31,357 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:31,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:31,358 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:31,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:31,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:31,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2107108220, now seen corresponding path program 1 times [2024-07-20 20:26:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847828289] [2024-07-20 20:26:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-07-20 20:26:31,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847828289] [2024-07-20 20:26:31,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847828289] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:31,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:31,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:31,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734988888] [2024-07-20 20:26:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:31,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:31,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:31,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:31,997 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:31,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 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) [2024-07-20 20:26:31,997 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:33,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-07-20 20:26:33,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:33,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -862419035, now seen corresponding path program 1 times [2024-07-20 20:26:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:33,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473426859] [2024-07-20 20:26:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:33,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-07-20 20:26:33,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:33,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473426859] [2024-07-20 20:26:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473426859] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:33,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115244803] [2024-07-20 20:26:33,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:33,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:33,987 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:33,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:33,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:34,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-07-20 20:26:34,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:34,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1494822319, now seen corresponding path program 2 times [2024-07-20 20:26:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882382430] [2024-07-20 20:26:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-07-20 20:26:34,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882382430] [2024-07-20 20:26:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882382430] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589171233] [2024-07-20 20:26:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:34,725 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:34,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:26:34,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:34,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:34,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-07-20 20:26:35,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:35,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 377782306, now seen corresponding path program 1 times [2024-07-20 20:26:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833665558] [2024-07-20 20:26:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:35,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:35,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:35,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:35,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:35,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-07-20 20:26:35,396 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:26:35,396 WARN L234 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:35,396 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2024-07-20 20:26:35,432 INFO L144 ThreadInstanceAdder]: Constructed 17 joinOtherThreadTransitions. [2024-07-20 20:26:35,435 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:35,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:35,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:35,438 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:35,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:35,438 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:35,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:35,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (18)] Waiting until timeout for monitored process [2024-07-20 20:26:36,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 707856540, now seen corresponding path program 1 times [2024-07-20 20:26:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243084250] [2024-07-20 20:26:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-07-20 20:26:36,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:36,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243084250] [2024-07-20 20:26:36,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243084250] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:36,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:36,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:36,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117512183] [2024-07-20 20:26:36,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:36,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:36,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:36,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:36,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:36,381 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:36,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 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) [2024-07-20 20:26:36,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:38,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-07-20 20:26:38,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:38,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 57446358, now seen corresponding path program 1 times [2024-07-20 20:26:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:38,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608659294] [2024-07-20 20:26:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-07-20 20:26:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608659294] [2024-07-20 20:26:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608659294] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48556181] [2024-07-20 20:26:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:38,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:38,647 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2024-07-20 20:26:38,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:38,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-07-20 20:26:39,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:39,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1357919902, now seen corresponding path program 2 times [2024-07-20 20:26:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046893271] [2024-07-20 20:26:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-07-20 20:26:39,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:39,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046893271] [2024-07-20 20:26:39,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046893271] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:39,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:39,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:39,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283301696] [2024-07-20 20:26:39,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:39,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:39,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:39,624 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:39,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 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) [2024-07-20 20:26:39,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:39,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:39,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-07-20 20:26:40,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:40,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 360439883, now seen corresponding path program 1 times [2024-07-20 20:26:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060608917] [2024-07-20 20:26:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:40,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:40,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:40,339 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:40,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:40,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:40,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-07-20 20:26:40,340 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:26:40,340 WARN L234 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:40,340 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2024-07-20 20:26:40,373 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-07-20 20:26:40,375 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:40,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:40,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:40,377 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) [2024-07-20 20:26:40,380 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:40,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:40,380 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:40,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:40,386 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 [2024-07-20 20:26:41,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:41,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1562720630, now seen corresponding path program 1 times [2024-07-20 20:26:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:41,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151514422] [2024-07-20 20:26:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:41,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-07-20 20:26:41,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:41,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151514422] [2024-07-20 20:26:41,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151514422] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:41,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:41,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012805275] [2024-07-20 20:26:41,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:41,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:41,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:41,210 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:41,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2024-07-20 20:26:41,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:43,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-07-20 20:26:43,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:43,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1903576960, now seen corresponding path program 1 times [2024-07-20 20:26:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134265939] [2024-07-20 20:26:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-07-20 20:26:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134265939] [2024-07-20 20:26:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134265939] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:43,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003723623] [2024-07-20 20:26:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:43,664 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:43,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2024-07-20 20:26:43,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:43,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:44,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-07-20 20:26:44,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:44,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2118557662, now seen corresponding path program 2 times [2024-07-20 20:26:44,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:44,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360131710] [2024-07-20 20:26:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-07-20 20:26:44,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360131710] [2024-07-20 20:26:44,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360131710] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:44,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:44,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:44,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729648287] [2024-07-20 20:26:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:44,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:44,558 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:44,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 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) [2024-07-20 20:26:44,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:44,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:44,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-07-20 20:26:45,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:45,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 750130098, now seen corresponding path program 1 times [2024-07-20 20:26:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355965475] [2024-07-20 20:26:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:45,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:45,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:45,686 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:45,686 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:45,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:45,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-07-20 20:26:45,687 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:26:45,687 WARN L234 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:45,687 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2024-07-20 20:26:45,731 INFO L144 ThreadInstanceAdder]: Constructed 19 joinOtherThreadTransitions. [2024-07-20 20:26:45,734 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:45,735 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:45,739 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:45,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:45,739 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:45,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:45,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2024-07-20 20:26:46,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:46,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:46,583 INFO L85 PathProgramCache]: Analyzing trace with hash 773850273, now seen corresponding path program 1 times [2024-07-20 20:26:46,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:46,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830218780] [2024-07-20 20:26:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:46,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-07-20 20:26:46,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:46,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830218780] [2024-07-20 20:26:46,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830218780] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:46,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:46,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:46,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116351193] [2024-07-20 20:26:46,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:46,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:46,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:46,625 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:46,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2024-07-20 20:26:46,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:49,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-07-20 20:26:49,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:49,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash 154463064, now seen corresponding path program 1 times [2024-07-20 20:26:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:49,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139879342] [2024-07-20 20:26:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-07-20 20:26:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:49,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139879342] [2024-07-20 20:26:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139879342] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511936623] [2024-07-20 20:26:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:49,423 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:49,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2024-07-20 20:26:49,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:49,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:50,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-07-20 20:26:50,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:50,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash 425146636, now seen corresponding path program 2 times [2024-07-20 20:26:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:50,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652958671] [2024-07-20 20:26:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-07-20 20:26:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652958671] [2024-07-20 20:26:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652958671] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:50,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511469900] [2024-07-20 20:26:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:50,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:50,398 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:50,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 3 states have internal predecessors, (328), 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) [2024-07-20 20:26:50,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:50,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:50,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-07-20 20:26:51,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:51,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1092860327, now seen corresponding path program 1 times [2024-07-20 20:26:51,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:51,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008958073] [2024-07-20 20:26:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:51,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:51,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:51,289 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:51,289 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:51,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:51,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-07-20 20:26:51,290 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:26:51,290 WARN L234 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:51,290 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2024-07-20 20:26:51,323 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2024-07-20 20:26:51,326 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:51,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:51,328 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:26:51,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2024-07-20 20:26:51,337 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:51,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:51,342 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:51,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:52,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:52,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash 288698548, now seen corresponding path program 1 times [2024-07-20 20:26:52,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:52,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188969505] [2024-07-20 20:26:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-07-20 20:26:52,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:52,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188969505] [2024-07-20 20:26:52,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188969505] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:52,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:52,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:52,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263410685] [2024-07-20 20:26:52,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:52,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:52,455 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:52,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2024-07-20 20:26:52,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:55,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-07-20 20:26:55,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:55,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1758155467, now seen corresponding path program 1 times [2024-07-20 20:26:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919128176] [2024-07-20 20:26:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-07-20 20:26:55,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:55,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919128176] [2024-07-20 20:26:55,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919128176] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:55,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:55,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663424904] [2024-07-20 20:26:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:55,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:26:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:26:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:26:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:55,330 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:55,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2024-07-20 20:26:55,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:55,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-07-20 20:26:55,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:55,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash 125596693, now seen corresponding path program 2 times [2024-07-20 20:26:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:55,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054928691] [2024-07-20 20:26:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-07-20 20:26:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054928691] [2024-07-20 20:26:56,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054928691] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:56,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:56,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:26:56,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569385242] [2024-07-20 20:26:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:26:56,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:26:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:26:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:56,262 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:56,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 3 states have internal predecessors, (346), 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) [2024-07-20 20:26:56,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:56,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:56,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:26:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:26:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-07-20 20:26:57,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1072678548, now seen corresponding path program 1 times [2024-07-20 20:26:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512877980] [2024-07-20 20:26:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:57,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:26:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:26:57,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:26:57,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:26:57,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:26:57,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:26:57,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-07-20 20:26:57,258 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:26:57,258 WARN L234 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:26:57,258 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2024-07-20 20:26:57,301 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-07-20 20:26:57,304 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:57,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:26:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:26:57,305 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) [2024-07-20 20:26:57,309 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 [2024-07-20 20:26:57,310 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:26:57,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:26:57,311 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:26:57,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:26:58,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:26:58,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:26:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash -806259558, now seen corresponding path program 1 times [2024-07-20 20:26:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:26:58,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424054480] [2024-07-20 20:26:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:26:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:26:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:26:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-07-20 20:26:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:26:58,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424054480] [2024-07-20 20:26:58,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424054480] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:26:58,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:26:58,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:26:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681738814] [2024-07-20 20:26:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:26:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:26:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:26:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:26:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:26:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:26:58,483 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:26:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-07-20 20:26:58,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:01,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-07-20 20:27:01,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:01,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1614554123, now seen corresponding path program 1 times [2024-07-20 20:27:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:01,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896751150] [2024-07-20 20:27:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-07-20 20:27:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896751150] [2024-07-20 20:27:01,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896751150] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:01,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069840186] [2024-07-20 20:27:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:01,670 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:01,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2024-07-20 20:27:01,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:01,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-07-20 20:27:02,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:02,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1943903239, now seen corresponding path program 2 times [2024-07-20 20:27:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157791171] [2024-07-20 20:27:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-07-20 20:27:02,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157791171] [2024-07-20 20:27:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157791171] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:02,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:02,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:02,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727757806] [2024-07-20 20:27:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:02,623 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 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) [2024-07-20 20:27:02,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:02,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:02,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:03,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-07-20 20:27:03,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:03,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash -311573222, now seen corresponding path program 1 times [2024-07-20 20:27:03,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:03,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674015530] [2024-07-20 20:27:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:03,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:03,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:03,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:03,794 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:03,794 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:03,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:03,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-07-20 20:27:03,796 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:03,796 WARN L234 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:03,796 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2024-07-20 20:27:03,985 INFO L144 ThreadInstanceAdder]: Constructed 22 joinOtherThreadTransitions. [2024-07-20 20:27:03,988 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:03,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:03,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:03,990 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) [2024-07-20 20:27:03,992 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:03,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:03,992 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:03,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:04,004 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 [2024-07-20 20:27:05,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:05,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1352969086, now seen corresponding path program 1 times [2024-07-20 20:27:05,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:05,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765724933] [2024-07-20 20:27:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-07-20 20:27:05,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765724933] [2024-07-20 20:27:05,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765724933] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:05,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:05,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:05,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49235503] [2024-07-20 20:27:05,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:05,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:05,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:05,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:05,163 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:05,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 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) [2024-07-20 20:27:05,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-07-20 20:27:08,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:08,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1397558707, now seen corresponding path program 1 times [2024-07-20 20:27:08,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:08,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008458080] [2024-07-20 20:27:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-07-20 20:27:08,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008458080] [2024-07-20 20:27:08,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008458080] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:08,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:08,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:08,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263900054] [2024-07-20 20:27:08,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:08,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:08,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:08,601 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2024-07-20 20:27:08,601 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:08,601 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-07-20 20:27:09,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:09,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1894790983, now seen corresponding path program 2 times [2024-07-20 20:27:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961266406] [2024-07-20 20:27:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-07-20 20:27:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961266406] [2024-07-20 20:27:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961266406] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:09,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:09,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028747539] [2024-07-20 20:27:09,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:09,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:09,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:09,557 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:09,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 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) [2024-07-20 20:27:09,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:09,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:09,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:10,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-07-20 20:27:10,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:10,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash 605839038, now seen corresponding path program 1 times [2024-07-20 20:27:10,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:10,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457220996] [2024-07-20 20:27:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:10,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:10,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:10,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:10,907 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:10,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:10,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:10,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-07-20 20:27:10,908 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:10,908 WARN L234 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:10,908 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2024-07-20 20:27:10,956 INFO L144 ThreadInstanceAdder]: Constructed 23 joinOtherThreadTransitions. [2024-07-20 20:27:10,959 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:10,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:10,961 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) [2024-07-20 20:27:10,962 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 [2024-07-20 20:27:10,965 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:10,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:10,965 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:10,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:12,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:12,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash -415041833, now seen corresponding path program 1 times [2024-07-20 20:27:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:12,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330480025] [2024-07-20 20:27:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:12,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-07-20 20:27:12,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:12,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330480025] [2024-07-20 20:27:12,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330480025] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:12,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:12,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:12,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245504847] [2024-07-20 20:27:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:12,205 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:12,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 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) [2024-07-20 20:27:12,205 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-07-20 20:27:15,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:15,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1682510176, now seen corresponding path program 1 times [2024-07-20 20:27:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136680294] [2024-07-20 20:27:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:15,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-07-20 20:27:15,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:15,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136680294] [2024-07-20 20:27:15,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136680294] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:15,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:15,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:15,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086792513] [2024-07-20 20:27:15,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:15,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:15,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:15,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:15,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:15,814 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:15,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2024-07-20 20:27:15,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:15,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-07-20 20:27:16,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:16,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1621458090, now seen corresponding path program 2 times [2024-07-20 20:27:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89686195] [2024-07-20 20:27:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-07-20 20:27:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89686195] [2024-07-20 20:27:17,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89686195] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:17,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:17,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077622790] [2024-07-20 20:27:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:17,111 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 3 states have internal predecessors, (400), 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) [2024-07-20 20:27:17,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:17,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:17,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:18,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-07-20 20:27:18,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:18,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:18,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1086039968, now seen corresponding path program 1 times [2024-07-20 20:27:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:18,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785740625] [2024-07-20 20:27:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:18,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:18,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:18,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:18,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:18,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:18,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-07-20 20:27:18,404 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:18,405 WARN L234 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:18,405 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2024-07-20 20:27:18,452 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2024-07-20 20:27:18,455 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:18,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:18,456 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:27:18,459 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:18,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:18,459 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:18,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:18,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (25)] Waiting until timeout for monitored process [2024-07-20 20:27:19,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:19,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash 511145272, now seen corresponding path program 1 times [2024-07-20 20:27:19,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:19,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045806773] [2024-07-20 20:27:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-07-20 20:27:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045806773] [2024-07-20 20:27:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045806773] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130155266] [2024-07-20 20:27:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:19,959 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:19,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 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) [2024-07-20 20:27:19,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:23,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-07-20 20:27:23,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:23,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash 788182278, now seen corresponding path program 1 times [2024-07-20 20:27:23,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737655953] [2024-07-20 20:27:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-07-20 20:27:24,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:24,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737655953] [2024-07-20 20:27:24,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737655953] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:24,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:24,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:24,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011873975] [2024-07-20 20:27:24,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:24,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:24,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:24,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:24,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:24,024 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:24,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-07-20 20:27:24,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:24,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-07-20 20:27:24,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:24,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1364119944, now seen corresponding path program 2 times [2024-07-20 20:27:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617549423] [2024-07-20 20:27:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-07-20 20:27:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:25,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617549423] [2024-07-20 20:27:25,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617549423] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979030422] [2024-07-20 20:27:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:25,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:25,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:25,090 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-07-20 20:27:25,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:25,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:25,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:26,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-07-20 20:27:26,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:26,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1471853019, now seen corresponding path program 1 times [2024-07-20 20:27:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638832418] [2024-07-20 20:27:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:26,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:26,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:26,784 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:26,784 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:26,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:26,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-07-20 20:27:26,785 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:26,786 WARN L234 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:26,786 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2024-07-20 20:27:26,831 INFO L144 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2024-07-20 20:27:26,835 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:26,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:26,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:26,837 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:27:26,840 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:26,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:26,840 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:26,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (26)] Waiting until timeout for monitored process [2024-07-20 20:27:28,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:28,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1851640008, now seen corresponding path program 1 times [2024-07-20 20:27:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686385446] [2024-07-20 20:27:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-07-20 20:27:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686385446] [2024-07-20 20:27:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686385446] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689878502] [2024-07-20 20:27:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:28,328 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:28,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2024-07-20 20:27:28,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:32,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-07-20 20:27:32,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:32,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash -332290088, now seen corresponding path program 1 times [2024-07-20 20:27:32,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:32,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158998487] [2024-07-20 20:27:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:32,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-07-20 20:27:32,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158998487] [2024-07-20 20:27:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158998487] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333196077] [2024-07-20 20:27:32,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:32,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:32,740 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:32,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2024-07-20 20:27:32,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:32,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:33,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-07-20 20:27:33,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:33,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:33,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1892244586, now seen corresponding path program 2 times [2024-07-20 20:27:33,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:33,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010261731] [2024-07-20 20:27:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-07-20 20:27:33,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010261731] [2024-07-20 20:27:33,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010261731] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:33,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:33,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558074817] [2024-07-20 20:27:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:33,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:33,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:33,834 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:33,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 3 states have internal predecessors, (436), 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) [2024-07-20 20:27:33,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:33,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:33,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:35,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-07-20 20:27:35,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:35,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1582928981, now seen corresponding path program 1 times [2024-07-20 20:27:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:35,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33994424] [2024-07-20 20:27:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:35,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:35,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:35,532 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:35,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:35,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:35,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-07-20 20:27:35,532 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:35,533 WARN L234 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:35,533 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2024-07-20 20:27:35,588 INFO L144 ThreadInstanceAdder]: Constructed 26 joinOtherThreadTransitions. [2024-07-20 20:27:35,591 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:35,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:35,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:35,592 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) [2024-07-20 20:27:35,597 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:35,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:35,598 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:35,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:35,610 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 [2024-07-20 20:27:37,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:37,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:37,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1351325510, now seen corresponding path program 1 times [2024-07-20 20:27:37,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:37,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159543122] [2024-07-20 20:27:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-07-20 20:27:37,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:37,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159543122] [2024-07-20 20:27:37,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159543122] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:37,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:37,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558792338] [2024-07-20 20:27:37,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:37,218 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:37,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:27:37,218 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:41,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-07-20 20:27:41,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:41,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 686116577, now seen corresponding path program 1 times [2024-07-20 20:27:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:41,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911957369] [2024-07-20 20:27:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-07-20 20:27:42,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911957369] [2024-07-20 20:27:42,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911957369] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:42,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:42,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:42,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946770044] [2024-07-20 20:27:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:42,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:42,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:42,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:42,025 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:42,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2024-07-20 20:27:42,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:42,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:42,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-07-20 20:27:42,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:42,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:42,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1842280493, now seen corresponding path program 2 times [2024-07-20 20:27:42,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:42,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007024902] [2024-07-20 20:27:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2024-07-20 20:27:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007024902] [2024-07-20 20:27:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007024902] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:43,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:43,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487155563] [2024-07-20 20:27:43,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:43,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:43,166 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:43,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 3 states have internal predecessors, (454), 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) [2024-07-20 20:27:43,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:43,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:43,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-07-20 20:27:44,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:44,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash -197160423, now seen corresponding path program 1 times [2024-07-20 20:27:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040213302] [2024-07-20 20:27:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:45,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:45,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:45,100 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:45,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:45,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:45,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-07-20 20:27:45,101 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:45,102 WARN L234 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:45,102 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2024-07-20 20:27:45,160 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2024-07-20 20:27:45,163 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:45,165 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) [2024-07-20 20:27:45,165 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 [2024-07-20 20:27:45,167 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:45,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:45,167 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:45,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:46,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:46,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash -577240063, now seen corresponding path program 1 times [2024-07-20 20:27:46,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:46,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433274871] [2024-07-20 20:27:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:46,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-07-20 20:27:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433274871] [2024-07-20 20:27:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433274871] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:46,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473680056] [2024-07-20 20:27:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:46,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:46,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:46,949 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:46,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 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) [2024-07-20 20:27:46,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-07-20 20:27:51,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:51,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash -216635255, now seen corresponding path program 1 times [2024-07-20 20:27:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449569502] [2024-07-20 20:27:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-07-20 20:27:52,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449569502] [2024-07-20 20:27:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449569502] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:52,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:52,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059019912] [2024-07-20 20:27:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:52,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:27:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:27:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:27:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:52,412 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2024-07-20 20:27:52,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:52,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-07-20 20:27:53,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:53,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1371885639, now seen corresponding path program 2 times [2024-07-20 20:27:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847402473] [2024-07-20 20:27:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2024-07-20 20:27:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847402473] [2024-07-20 20:27:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847402473] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:27:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365672231] [2024-07-20 20:27:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:27:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:27:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:27:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:53,694 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 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) [2024-07-20 20:27:53,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:53,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:53,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:27:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:27:55,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-07-20 20:27:55,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:55,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1248183183, now seen corresponding path program 1 times [2024-07-20 20:27:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:55,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855721090] [2024-07-20 20:27:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:55,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:27:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:27:55,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:27:55,934 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:27:55,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:27:55,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:27:55,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-07-20 20:27:55,935 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:27:55,935 WARN L234 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:27:55,935 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2024-07-20 20:27:56,002 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2024-07-20 20:27:56,005 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:56,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:27:56,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:27:56,007 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) [2024-07-20 20:27:56,013 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:27:56,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:27:56,014 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:27:56,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:27:56,032 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 [2024-07-20 20:27:57,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:27:57,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:27:57,809 INFO L85 PathProgramCache]: Analyzing trace with hash 997792300, now seen corresponding path program 1 times [2024-07-20 20:27:57,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:27:57,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957946351] [2024-07-20 20:27:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:27:57,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:27:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:27:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-07-20 20:27:57,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:27:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957946351] [2024-07-20 20:27:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957946351] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:27:57,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:27:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:27:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914676406] [2024-07-20 20:27:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:27:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:27:57,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:27:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:27:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:27:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:27:57,866 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:27:57,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2024-07-20 20:27:57,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:03,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:03,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-07-20 20:28:03,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:03,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash 667621604, now seen corresponding path program 1 times [2024-07-20 20:28:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768403948] [2024-07-20 20:28:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2024-07-20 20:28:03,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768403948] [2024-07-20 20:28:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768403948] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:03,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:03,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:03,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580275416] [2024-07-20 20:28:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:03,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:28:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:03,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:28:03,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:28:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:03,407 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2024-07-20 20:28:03,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:03,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:04,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-07-20 20:28:04,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:04,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 969479858, now seen corresponding path program 2 times [2024-07-20 20:28:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:04,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446722521] [2024-07-20 20:28:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:04,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2024-07-20 20:28:04,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:04,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446722521] [2024-07-20 20:28:04,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446722521] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:04,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:04,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500212693] [2024-07-20 20:28:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:04,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:28:04,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:28:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:28:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:04,816 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:04,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 3 states have internal predecessors, (490), 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) [2024-07-20 20:28:04,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:04,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:04,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:28:06,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-07-20 20:28:06,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:06,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:06,714 INFO L85 PathProgramCache]: Analyzing trace with hash 109900371, now seen corresponding path program 1 times [2024-07-20 20:28:06,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:06,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343790090] [2024-07-20 20:28:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:06,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:06,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:28:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:06,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:28:06,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:28:06,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:28:06,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:28:06,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-07-20 20:28:06,848 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:28:06,848 WARN L234 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:28:06,848 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2024-07-20 20:28:06,905 INFO L144 ThreadInstanceAdder]: Constructed 29 joinOtherThreadTransitions. [2024-07-20 20:28:06,909 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:06,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:28:06,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:28:06,910 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) [2024-07-20 20:28:06,915 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 [2024-07-20 20:28:06,915 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:28:06,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:28:06,916 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:06,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:28:09,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:09,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash 275099274, now seen corresponding path program 1 times [2024-07-20 20:28:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46062971] [2024-07-20 20:28:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-07-20 20:28:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46062971] [2024-07-20 20:28:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46062971] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:09,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:28:09,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170605030] [2024-07-20 20:28:09,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:28:09,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:28:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:28:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:09,062 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 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) [2024-07-20 20:28:09,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-07-20 20:28:14,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1050564924, now seen corresponding path program 1 times [2024-07-20 20:28:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410162881] [2024-07-20 20:28:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-07-20 20:28:15,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410162881] [2024-07-20 20:28:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410162881] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:15,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:15,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:15,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610503781] [2024-07-20 20:28:15,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:15,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:28:15,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:28:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:28:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:15,077 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:15,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2024-07-20 20:28:15,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:15,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:15,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-07-20 20:28:15,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:15,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1870402044, now seen corresponding path program 2 times [2024-07-20 20:28:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:15,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899432853] [2024-07-20 20:28:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-07-20 20:28:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899432853] [2024-07-20 20:28:16,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899432853] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:16,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:16,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129232906] [2024-07-20 20:28:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:28:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:28:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:28:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:16,377 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:16,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 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) [2024-07-20 20:28:16,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:16,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:16,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:28:18,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-07-20 20:28:18,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:18,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash -692580493, now seen corresponding path program 1 times [2024-07-20 20:28:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:18,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918198882] [2024-07-20 20:28:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:18,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:28:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:18,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:28:18,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:28:18,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:28:18,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:28:18,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-07-20 20:28:18,750 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:28:18,750 WARN L234 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:28:18,750 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2024-07-20 20:28:18,809 INFO L144 ThreadInstanceAdder]: Constructed 30 joinOtherThreadTransitions. [2024-07-20 20:28:18,812 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:18,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:28:18,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:28:18,814 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:28:18,817 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:28:18,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:28:18,818 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:18,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:28:18,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (31)] Waiting until timeout for monitored process [2024-07-20 20:28:20,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:20,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash 882447022, now seen corresponding path program 1 times [2024-07-20 20:28:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378405167] [2024-07-20 20:28:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-07-20 20:28:21,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:21,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378405167] [2024-07-20 20:28:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378405167] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:21,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:28:21,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359813553] [2024-07-20 20:28:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:21,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:28:21,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:28:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:28:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:21,014 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:21,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2024-07-20 20:28:21,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:27,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-07-20 20:28:27,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:27,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:27,327 INFO L85 PathProgramCache]: Analyzing trace with hash 465181344, now seen corresponding path program 1 times [2024-07-20 20:28:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:27,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845621903] [2024-07-20 20:28:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:27,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2024-07-20 20:28:27,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:27,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845621903] [2024-07-20 20:28:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845621903] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:27,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7733284] [2024-07-20 20:28:27,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:27,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:28:27,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:27,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:28:27,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:28:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:27,611 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:27,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2024-07-20 20:28:27,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:27,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:28,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-07-20 20:28:28,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:28,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:28,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1705464346, now seen corresponding path program 2 times [2024-07-20 20:28:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:28,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882861006] [2024-07-20 20:28:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:28,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 1191 trivial. 0 not checked. [2024-07-20 20:28:29,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882861006] [2024-07-20 20:28:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882861006] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:29,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:29,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734569914] [2024-07-20 20:28:29,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:28:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:28:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:28:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:29,143 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 3 states have internal predecessors, (526), 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) [2024-07-20 20:28:29,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:29,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:29,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:28:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-07-20 20:28:31,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:31,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1789385528, now seen corresponding path program 1 times [2024-07-20 20:28:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195978611] [2024-07-20 20:28:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:31,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:28:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:31,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:28:31,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:28:31,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:28:31,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:28:31,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-07-20 20:28:31,867 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:28:31,867 WARN L234 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:28:31,867 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2024-07-20 20:28:31,928 INFO L144 ThreadInstanceAdder]: Constructed 31 joinOtherThreadTransitions. [2024-07-20 20:28:31,931 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:31,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:28:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:28:31,933 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:28:31,935 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:28:31,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:28:31,935 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:31,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:28:31,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (32)] Waiting until timeout for monitored process [2024-07-20 20:28:34,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:34,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1568342117, now seen corresponding path program 1 times [2024-07-20 20:28:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97292827] [2024-07-20 20:28:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-07-20 20:28:34,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97292827] [2024-07-20 20:28:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97292827] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:34,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:34,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:28:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994467619] [2024-07-20 20:28:34,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:34,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:28:34,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:28:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:28:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:34,270 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:34,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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) [2024-07-20 20:28:34,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:40,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-07-20 20:28:40,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:40,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1404581081, now seen corresponding path program 1 times [2024-07-20 20:28:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:40,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553425553] [2024-07-20 20:28:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2024-07-20 20:28:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553425553] [2024-07-20 20:28:41,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553425553] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:41,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:41,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950704478] [2024-07-20 20:28:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:41,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:28:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:28:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:28:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:41,486 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2024-07-20 20:28:41,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:41,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:42,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-07-20 20:28:42,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:42,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1065555539, now seen corresponding path program 2 times [2024-07-20 20:28:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931689254] [2024-07-20 20:28:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2024-07-20 20:28:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931689254] [2024-07-20 20:28:42,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931689254] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:42,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618050724] [2024-07-20 20:28:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:42,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:28:42,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:28:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:28:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:42,871 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:42,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 3 states have internal predecessors, (544), 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) [2024-07-20 20:28:42,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:42,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:42,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:28:45,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-07-20 20:28:45,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:45,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1335193873, now seen corresponding path program 1 times [2024-07-20 20:28:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:45,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119781475] [2024-07-20 20:28:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:45,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:28:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:45,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:28:45,769 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:28:45,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:28:45,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:28:45,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-07-20 20:28:45,770 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:28:45,770 WARN L234 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:28:45,770 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2024-07-20 20:28:45,826 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2024-07-20 20:28:45,829 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:28:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:28:45,831 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:28:45,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (33)] Waiting until timeout for monitored process [2024-07-20 20:28:45,862 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:28:45,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:28:45,862 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:45,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:28:48,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:48,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash -961897256, now seen corresponding path program 1 times [2024-07-20 20:28:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:48,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628370073] [2024-07-20 20:28:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2024-07-20 20:28:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:48,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628370073] [2024-07-20 20:28:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628370073] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:48,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:28:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573429526] [2024-07-20 20:28:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:48,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:28:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:28:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:28:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:48,325 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 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) [2024-07-20 20:28:48,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-07-20 20:28:54,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:54,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1969196126, now seen corresponding path program 1 times [2024-07-20 20:28:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303360085] [2024-07-20 20:28:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2024-07-20 20:28:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303360085] [2024-07-20 20:28:54,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303360085] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:54,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:54,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492142211] [2024-07-20 20:28:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:54,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:28:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:28:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:28:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:54,957 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:54,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2024-07-20 20:28:54,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:54,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:55,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-07-20 20:28:55,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:55,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash 718608836, now seen corresponding path program 2 times [2024-07-20 20:28:55,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:55,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780918482] [2024-07-20 20:28:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:55,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:28:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-07-20 20:28:56,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:28:56,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780918482] [2024-07-20 20:28:56,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780918482] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:28:56,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:28:56,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:28:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329431997] [2024-07-20 20:28:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:28:56,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:28:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:28:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:28:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:28:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:56,481 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:28:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 3 states have internal predecessors, (562), 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) [2024-07-20 20:28:56,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:56,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:56,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:28:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:28:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:28:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-07-20 20:28:59,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:28:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:28:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1955065294, now seen corresponding path program 1 times [2024-07-20 20:28:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:28:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059088684] [2024-07-20 20:28:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:28:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:28:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:59,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:28:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:28:59,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:28:59,182 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:28:59,182 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:28:59,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:28:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-07-20 20:28:59,183 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:28:59,185 WARN L234 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:28:59,185 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2024-07-20 20:28:59,246 INFO L144 ThreadInstanceAdder]: Constructed 33 joinOtherThreadTransitions. [2024-07-20 20:28:59,249 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:59,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:28:59,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:28:59,251 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:28:59,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (34)] Waiting until timeout for monitored process [2024-07-20 20:28:59,257 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:28:59,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:28:59,258 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:28:59,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:29:01,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:01,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash -406166388, now seen corresponding path program 1 times [2024-07-20 20:29:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:01,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913435955] [2024-07-20 20:29:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2024-07-20 20:29:01,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:01,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913435955] [2024-07-20 20:29:01,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913435955] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:01,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:01,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:29:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569253001] [2024-07-20 20:29:01,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:01,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:29:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:01,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:29:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:29:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:01,969 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 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) [2024-07-20 20:29:01,970 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:08,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-07-20 20:29:08,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:08,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -747501083, now seen corresponding path program 1 times [2024-07-20 20:29:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327455224] [2024-07-20 20:29:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:08,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2024-07-20 20:29:09,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327455224] [2024-07-20 20:29:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327455224] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:09,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292899672] [2024-07-20 20:29:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:09,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:29:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:29:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:29:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:09,172 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:09,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2024-07-20 20:29:09,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:09,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:10,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-07-20 20:29:10,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:10,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash 891093733, now seen corresponding path program 2 times [2024-07-20 20:29:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704799736] [2024-07-20 20:29:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-07-20 20:29:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704799736] [2024-07-20 20:29:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704799736] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442274990] [2024-07-20 20:29:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:29:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:29:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:29:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:10,725 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 3 states have internal predecessors, (580), 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) [2024-07-20 20:29:10,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:10,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:10,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:29:13,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-07-20 20:29:13,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:13,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1232655330, now seen corresponding path program 1 times [2024-07-20 20:29:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:13,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261517226] [2024-07-20 20:29:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:13,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:29:13,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:29:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:29:13,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:29:13,713 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:29:13,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:29:13,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:29:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-07-20 20:29:13,714 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:29:13,714 WARN L234 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:29:13,714 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2024-07-20 20:29:13,779 INFO L144 ThreadInstanceAdder]: Constructed 34 joinOtherThreadTransitions. [2024-07-20 20:29:13,783 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:29:13,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:29:13,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:29:13,785 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:29:13,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (35)] Waiting until timeout for monitored process [2024-07-20 20:29:13,802 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:29:13,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:29:13,803 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:29:13,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:29:16,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:16,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:16,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1199988870, now seen corresponding path program 1 times [2024-07-20 20:29:16,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:16,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514233856] [2024-07-20 20:29:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:16,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2024-07-20 20:29:16,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:16,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514233856] [2024-07-20 20:29:16,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514233856] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:16,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:16,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:29:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449215206] [2024-07-20 20:29:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:29:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:29:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:29:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:16,879 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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) [2024-07-20 20:29:16,879 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:25,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-07-20 20:29:25,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:25,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1387835515, now seen corresponding path program 1 times [2024-07-20 20:29:25,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:25,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763087956] [2024-07-20 20:29:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2024-07-20 20:29:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763087956] [2024-07-20 20:29:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763087956] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870891744] [2024-07-20 20:29:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:29:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:29:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:29:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:26,012 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:26,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2024-07-20 20:29:26,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:26,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-07-20 20:29:26,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:26,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1531316829, now seen corresponding path program 2 times [2024-07-20 20:29:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:26,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157940681] [2024-07-20 20:29:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-07-20 20:29:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:27,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157940681] [2024-07-20 20:29:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157940681] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:27,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:27,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602547304] [2024-07-20 20:29:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:27,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:29:27,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:29:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:29:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:27,759 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:27,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 3 states have internal predecessors, (598), 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) [2024-07-20 20:29:27,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:27,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:27,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:31,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:29:31,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-07-20 20:29:31,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:31,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1503106169, now seen corresponding path program 1 times [2024-07-20 20:29:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103401193] [2024-07-20 20:29:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:29:31,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:29:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:29:31,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:29:31,406 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:29:31,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:29:31,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:29:31,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-07-20 20:29:31,406 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:29:31,407 WARN L234 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:29:31,407 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2024-07-20 20:29:31,479 INFO L144 ThreadInstanceAdder]: Constructed 35 joinOtherThreadTransitions. [2024-07-20 20:29:31,483 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:29:31,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:29:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:29:31,484 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:29:31,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (36)] Waiting until timeout for monitored process [2024-07-20 20:29:31,505 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:29:31,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:29:31,505 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:29:31,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:29:34,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:34,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2141737773, now seen corresponding path program 1 times [2024-07-20 20:29:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114448203] [2024-07-20 20:29:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2024-07-20 20:29:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:34,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114448203] [2024-07-20 20:29:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114448203] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:34,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:29:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559288602] [2024-07-20 20:29:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:34,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:29:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:29:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:29:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:34,498 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:34,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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) [2024-07-20 20:29:34,499 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:42,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-07-20 20:29:42,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:42,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1655279902, now seen corresponding path program 1 times [2024-07-20 20:29:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867417971] [2024-07-20 20:29:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2024-07-20 20:29:42,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:42,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867417971] [2024-07-20 20:29:42,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867417971] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:42,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:42,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880350692] [2024-07-20 20:29:42,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:42,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:29:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:29:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:29:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:42,804 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:42,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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) [2024-07-20 20:29:42,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:42,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:43,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-07-20 20:29:43,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1310478226, now seen corresponding path program 2 times [2024-07-20 20:29:43,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850218267] [2024-07-20 20:29:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2024-07-20 20:29:44,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:44,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850218267] [2024-07-20 20:29:44,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850218267] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:44,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:44,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:44,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940373118] [2024-07-20 20:29:44,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:44,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:29:44,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:44,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:29:44,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:29:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:44,331 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:44,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 3 states have internal predecessors, (616), 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) [2024-07-20 20:29:44,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:44,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:44,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:29:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:29:47,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-07-20 20:29:47,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:47,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash -808029690, now seen corresponding path program 1 times [2024-07-20 20:29:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:47,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924635151] [2024-07-20 20:29:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:29:47,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:29:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:29:47,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:29:47,865 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:29:47,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:29:47,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:29:47,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-07-20 20:29:47,866 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:29:47,866 WARN L234 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:29:47,866 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2024-07-20 20:29:47,937 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2024-07-20 20:29:47,941 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:29:47,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:29:47,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:29:47,942 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:29:47,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (37)] Waiting until timeout for monitored process [2024-07-20 20:29:47,945 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:29:47,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:29:47,945 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:29:47,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:29:50,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:50,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash -790160248, now seen corresponding path program 1 times [2024-07-20 20:29:50,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:50,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820549279] [2024-07-20 20:29:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2024-07-20 20:29:51,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820549279] [2024-07-20 20:29:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820549279] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:29:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859520801] [2024-07-20 20:29:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:51,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:29:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:29:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:29:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:51,028 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 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) [2024-07-20 20:29:51,028 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-07-20 20:29:59,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:29:59,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:29:59,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1933199694, now seen corresponding path program 1 times [2024-07-20 20:29:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:29:59,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104515844] [2024-07-20 20:29:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:29:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:29:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:29:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2024-07-20 20:29:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:29:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104515844] [2024-07-20 20:29:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104515844] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:29:59,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:29:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:29:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732747193] [2024-07-20 20:29:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:29:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:29:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:29:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:29:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:29:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:59,740 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:29:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2024-07-20 20:29:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:29:59,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:00,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-07-20 20:30:00,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:00,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash 238576400, now seen corresponding path program 2 times [2024-07-20 20:30:00,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:00,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852438987] [2024-07-20 20:30:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:00,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2024-07-20 20:30:01,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852438987] [2024-07-20 20:30:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852438987] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:01,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:30:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149417192] [2024-07-20 20:30:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:30:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:30:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:30:01,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:01,472 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:01,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.5) internal successors, (634), 3 states have internal predecessors, (634), 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) [2024-07-20 20:30:01,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:01,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:01,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:30:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-07-20 20:30:04,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:04,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 348797789, now seen corresponding path program 1 times [2024-07-20 20:30:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391840506] [2024-07-20 20:30:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:30:04,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:30:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:30:05,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:30:05,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:30:05,084 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:30:05,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:30:05,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-07-20 20:30:05,084 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:30:05,085 WARN L234 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:30:05,085 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2024-07-20 20:30:05,160 INFO L144 ThreadInstanceAdder]: Constructed 37 joinOtherThreadTransitions. [2024-07-20 20:30:05,164 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:30:05,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:30:05,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:30:05,165 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:30:05,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (38)] Waiting until timeout for monitored process [2024-07-20 20:30:05,187 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:30:05,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:30:05,187 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:30:05,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:30:08,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:08,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash 555041374, now seen corresponding path program 1 times [2024-07-20 20:30:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713198521] [2024-07-20 20:30:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2024-07-20 20:30:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:08,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713198521] [2024-07-20 20:30:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713198521] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:08,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:08,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:30:08,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806756055] [2024-07-20 20:30:08,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:08,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:30:08,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:08,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:30:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:30:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:08,739 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:08,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 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) [2024-07-20 20:30:08,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:18,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-07-20 20:30:18,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:18,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash 746341468, now seen corresponding path program 1 times [2024-07-20 20:30:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23600506] [2024-07-20 20:30:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:18,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2024-07-20 20:30:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:19,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23600506] [2024-07-20 20:30:19,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23600506] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:19,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:19,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:30:19,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991690303] [2024-07-20 20:30:19,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:19,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:30:19,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:30:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:30:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:19,341 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:19,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2024-07-20 20:30:19,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:19,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-07-20 20:30:20,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:20,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1581458832, now seen corresponding path program 2 times [2024-07-20 20:30:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:20,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46276217] [2024-07-20 20:30:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2024-07-20 20:30:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46276217] [2024-07-20 20:30:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46276217] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:30:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081724823] [2024-07-20 20:30:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:21,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:30:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:30:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:30:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:21,063 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:21,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.0) internal successors, (652), 3 states have internal predecessors, (652), 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) [2024-07-20 20:30:21,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:21,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:21,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:30:25,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-07-20 20:30:25,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:25,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1557764475, now seen corresponding path program 1 times [2024-07-20 20:30:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:25,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880901754] [2024-07-20 20:30:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:30:25,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:30:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:30:25,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:30:25,546 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:30:25,546 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:30:25,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:30:25,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-07-20 20:30:25,547 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:30:25,547 WARN L234 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:30:25,547 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2024-07-20 20:30:25,621 INFO L144 ThreadInstanceAdder]: Constructed 38 joinOtherThreadTransitions. [2024-07-20 20:30:25,625 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:30:25,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:30:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:30:25,626 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:30:25,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (39)] Waiting until timeout for monitored process [2024-07-20 20:30:25,645 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:30:25,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:30:25,645 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:30:25,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:30:29,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:29,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2058200154, now seen corresponding path program 1 times [2024-07-20 20:30:29,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633165896] [2024-07-20 20:30:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2024-07-20 20:30:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:29,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633165896] [2024-07-20 20:30:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633165896] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:30:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656262991] [2024-07-20 20:30:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:30:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:30:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:30:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:29,360 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:29,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 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) [2024-07-20 20:30:29,360 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:39,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-07-20 20:30:39,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:39,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1596146045, now seen corresponding path program 1 times [2024-07-20 20:30:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:39,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009523287] [2024-07-20 20:30:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:39,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2024-07-20 20:30:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009523287] [2024-07-20 20:30:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009523287] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:40,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:40,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:30:40,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797396008] [2024-07-20 20:30:40,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:40,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:30:40,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:30:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:30:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:40,037 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:40,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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) [2024-07-20 20:30:40,037 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:40,037 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:41,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-07-20 20:30:41,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:41,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1827043071, now seen corresponding path program 2 times [2024-07-20 20:30:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:41,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18573482] [2024-07-20 20:30:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2024-07-20 20:30:41,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18573482] [2024-07-20 20:30:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18573482] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:41,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:41,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:30:41,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823386216] [2024-07-20 20:30:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:30:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:30:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:30:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:41,911 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:41,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 3 states have internal predecessors, (670), 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) [2024-07-20 20:30:41,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:41,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:41,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:30:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:30:46,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-07-20 20:30:46,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:46,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:46,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1383525733, now seen corresponding path program 1 times [2024-07-20 20:30:46,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:46,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458987941] [2024-07-20 20:30:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:46,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:30:46,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:30:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:30:46,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:30:46,313 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:30:46,313 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:30:46,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:30:46,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-07-20 20:30:46,314 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:30:46,315 WARN L234 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:30:46,315 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2024-07-20 20:30:46,388 INFO L144 ThreadInstanceAdder]: Constructed 39 joinOtherThreadTransitions. [2024-07-20 20:30:46,392 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:30:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:30:46,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:30:46,394 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:30:46,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (40)] Waiting until timeout for monitored process [2024-07-20 20:30:46,411 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:30:46,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:30:46,411 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:30:46,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:30:49,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:49,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1579705745, now seen corresponding path program 1 times [2024-07-20 20:30:49,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:49,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734047305] [2024-07-20 20:30:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:49,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:30:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:30:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2024-07-20 20:30:50,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:30:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734047305] [2024-07-20 20:30:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734047305] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:30:50,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:30:50,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:30:50,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512509404] [2024-07-20 20:30:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:30:50,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:30:50,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:30:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:30:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:30:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:50,081 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:30:50,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 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) [2024-07-20 20:30:50,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:30:59,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-07-20 20:30:59,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:30:59,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:30:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash -858718283, now seen corresponding path program 1 times [2024-07-20 20:30:59,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:30:59,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681352162] [2024-07-20 20:30:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:30:59,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2024-07-20 20:31:00,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:00,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681352162] [2024-07-20 20:31:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681352162] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:31:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096042281] [2024-07-20 20:31:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:00,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:31:00,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:31:00,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:31:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:00,511 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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) [2024-07-20 20:31:00,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:00,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:01,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-07-20 20:31:01,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1985644397, now seen corresponding path program 2 times [2024-07-20 20:31:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476282698] [2024-07-20 20:31:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 2073 trivial. 0 not checked. [2024-07-20 20:31:02,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:02,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476282698] [2024-07-20 20:31:02,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476282698] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:02,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:31:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167273923] [2024-07-20 20:31:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:02,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:31:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:31:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:31:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:02,398 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 3 states have internal predecessors, (688), 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) [2024-07-20 20:31:02,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:02,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:02,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:31:06,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-07-20 20:31:06,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:06,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:06,547 INFO L85 PathProgramCache]: Analyzing trace with hash -548476137, now seen corresponding path program 1 times [2024-07-20 20:31:06,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:06,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978089654] [2024-07-20 20:31:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:06,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:31:06,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:31:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:31:06,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:31:06,815 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:31:06,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:31:06,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:31:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-07-20 20:31:06,816 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:31:06,816 WARN L234 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:31:06,816 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2024-07-20 20:31:06,894 INFO L144 ThreadInstanceAdder]: Constructed 40 joinOtherThreadTransitions. [2024-07-20 20:31:06,898 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:31:06,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:31:06,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:31:06,900 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:31:06,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (41)] Waiting until timeout for monitored process [2024-07-20 20:31:06,918 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:31:06,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:31:06,919 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:31:06,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:31:11,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:11,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 996393904, now seen corresponding path program 1 times [2024-07-20 20:31:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803664592] [2024-07-20 20:31:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2024-07-20 20:31:11,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:11,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803664592] [2024-07-20 20:31:11,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803664592] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:11,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:11,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:31:11,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897358128] [2024-07-20 20:31:11,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:31:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:31:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:31:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:11,210 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:11,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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) [2024-07-20 20:31:11,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:23,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-07-20 20:31:23,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:23,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1476947158, now seen corresponding path program 1 times [2024-07-20 20:31:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91420912] [2024-07-20 20:31:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2024-07-20 20:31:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91420912] [2024-07-20 20:31:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91420912] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:23,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:23,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:31:23,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257746557] [2024-07-20 20:31:23,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:23,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:31:23,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:31:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:31:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:23,593 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:23,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 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) [2024-07-20 20:31:23,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:23,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:24,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-07-20 20:31:24,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:24,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 40362128, now seen corresponding path program 2 times [2024-07-20 20:31:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647613170] [2024-07-20 20:31:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 2186 trivial. 0 not checked. [2024-07-20 20:31:25,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:25,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647613170] [2024-07-20 20:31:25,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647613170] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:25,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:25,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:31:25,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484495565] [2024-07-20 20:31:25,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:25,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:31:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:31:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:31:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:25,437 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:25,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 3 states have internal predecessors, (706), 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) [2024-07-20 20:31:25,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:25,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:25,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:31:30,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-07-20 20:31:30,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:30,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash 711425660, now seen corresponding path program 1 times [2024-07-20 20:31:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:30,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753335986] [2024-07-20 20:31:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:31:30,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:31:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:31:30,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:31:30,651 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:31:30,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:31:30,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:31:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-07-20 20:31:30,652 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:31:30,652 WARN L234 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:31:30,652 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2024-07-20 20:31:30,908 INFO L144 ThreadInstanceAdder]: Constructed 41 joinOtherThreadTransitions. [2024-07-20 20:31:30,923 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:31:30,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:31:30,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:31:30,925 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:31:30,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (42)] Waiting until timeout for monitored process [2024-07-20 20:31:30,950 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:31:30,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:31:30,950 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:31:30,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:31:35,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:35,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:35,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1556338016, now seen corresponding path program 1 times [2024-07-20 20:31:35,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:35,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141543070] [2024-07-20 20:31:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-07-20 20:31:35,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141543070] [2024-07-20 20:31:35,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141543070] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:35,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:35,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:31:35,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884706429] [2024-07-20 20:31:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:31:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:31:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:31:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:35,372 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 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) [2024-07-20 20:31:35,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:47,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-07-20 20:31:47,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:47,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 583990170, now seen corresponding path program 1 times [2024-07-20 20:31:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31921502] [2024-07-20 20:31:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2024-07-20 20:31:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31921502] [2024-07-20 20:31:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31921502] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:31:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744783268] [2024-07-20 20:31:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:31:48,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:31:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:31:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:48,222 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:48,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2024-07-20 20:31:48,222 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:48,222 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-07-20 20:31:49,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:49,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 320340228, now seen corresponding path program 2 times [2024-07-20 20:31:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:49,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196527655] [2024-07-20 20:31:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:31:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2024-07-20 20:31:50,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:31:50,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196527655] [2024-07-20 20:31:50,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196527655] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:31:50,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:31:50,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:31:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783172150] [2024-07-20 20:31:50,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:31:50,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:31:50,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:31:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:31:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:31:50,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:50,283 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:31:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 3 states have internal predecessors, (724), 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) [2024-07-20 20:31:50,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:50,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:50,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:31:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:31:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:31:55,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-07-20 20:31:55,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:31:55,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:31:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2020432981, now seen corresponding path program 1 times [2024-07-20 20:31:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:31:55,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332169565] [2024-07-20 20:31:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:31:55,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:31:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:31:55,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:31:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:31:55,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:31:55,870 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:31:55,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:31:55,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:31:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-07-20 20:31:55,870 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:31:55,871 WARN L234 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:31:55,871 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2024-07-20 20:31:55,978 INFO L144 ThreadInstanceAdder]: Constructed 42 joinOtherThreadTransitions. [2024-07-20 20:31:55,982 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:31:55,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:31:55,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:31:55,984 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:31:55,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (43)] Waiting until timeout for monitored process [2024-07-20 20:31:56,009 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:31:56,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:31:56,010 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:31:56,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:32:00,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:00,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -977547282, now seen corresponding path program 1 times [2024-07-20 20:32:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495135055] [2024-07-20 20:32:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:32:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-07-20 20:32:00,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:32:00,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495135055] [2024-07-20 20:32:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495135055] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:32:00,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:32:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:32:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861794005] [2024-07-20 20:32:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:32:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:32:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:32:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:32:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:32:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:00,469 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:32:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 150.0) internal successors, (300), 2 states have internal predecessors, (300), 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) [2024-07-20 20:32:00,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:14,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-07-20 20:32:14,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:14,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash 202111664, now seen corresponding path program 1 times [2024-07-20 20:32:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:14,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148524009] [2024-07-20 20:32:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:14,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:32:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2024-07-20 20:32:14,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:32:14,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148524009] [2024-07-20 20:32:14,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148524009] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:32:14,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:32:14,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:32:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117679046] [2024-07-20 20:32:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:32:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:32:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:32:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:32:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:32:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:14,732 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:32:14,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2024-07-20 20:32:14,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:14,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:32:15,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-07-20 20:32:15,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:15,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:15,823 INFO L85 PathProgramCache]: Analyzing trace with hash -710229570, now seen corresponding path program 2 times [2024-07-20 20:32:15,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:15,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51024424] [2024-07-20 20:32:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:15,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:32:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 2421 trivial. 0 not checked. [2024-07-20 20:32:16,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:32:16,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51024424] [2024-07-20 20:32:16,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51024424] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:32:16,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:32:16,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:32:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093807198] [2024-07-20 20:32:16,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:32:16,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:32:16,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:32:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:32:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:32:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:16,833 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:32:16,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.5) internal successors, (742), 3 states have internal predecessors, (742), 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) [2024-07-20 20:32:16,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:16,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:32:16,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:32:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 20:32:21,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-07-20 20:32:21,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:21,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:21,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1694944350, now seen corresponding path program 1 times [2024-07-20 20:32:21,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:21,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140169532] [2024-07-20 20:32:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:21,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:32:21,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:32:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:32:22,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:32:22,199 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:32:22,199 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-07-20 20:32:22,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-07-20 20:32:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-07-20 20:32:22,200 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 20:32:22,201 WARN L234 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-20 20:32:22,201 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2024-07-20 20:32:22,285 INFO L144 ThreadInstanceAdder]: Constructed 43 joinOtherThreadTransitions. [2024-07-20 20:32:22,290 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:32:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:32:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:32:22,292 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:32:22,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (44)] Waiting until timeout for monitored process [2024-07-20 20:32:22,316 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:32:22,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 20:32:22,317 INFO L357 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, mHoare=true, 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;@881bee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:32:22,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-07-20 20:32:27,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 193309589, now seen corresponding path program 1 times [2024-07-20 20:32:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:27,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018391423] [2024-07-20 20:32:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:27,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:32:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-07-20 20:32:27,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:32:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018391423] [2024-07-20 20:32:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018391423] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:32:27,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:32:27,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 20:32:27,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39859029] [2024-07-20 20:32:27,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:32:27,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-07-20 20:32:27,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:32:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-07-20 20:32:27,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-07-20 20:32:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:27,142 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:32:27,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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) [2024-07-20 20:32:27,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:41,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-07-20 20:32:41,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:41,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash -226593607, now seen corresponding path program 1 times [2024-07-20 20:32:41,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:41,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663700738] [2024-07-20 20:32:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:32:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2024-07-20 20:32:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:32:41,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663700738] [2024-07-20 20:32:41,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663700738] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:32:41,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:32:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:32:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210400459] [2024-07-20 20:32:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:32:41,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 20:32:41,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:32:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 20:32:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 20:32:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:41,879 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:32:41,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 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) [2024-07-20 20:32:41,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:41,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:32:43,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-07-20 20:32:43,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-20 20:32:43,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:32:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1399453603, now seen corresponding path program 2 times [2024-07-20 20:32:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:32:43,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190252612] [2024-07-20 20:32:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:32:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:32:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:32:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 2543 trivial. 0 not checked. [2024-07-20 20:32:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:32:44,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190252612] [2024-07-20 20:32:44,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190252612] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:32:44,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:32:44,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-20 20:32:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771657282] [2024-07-20 20:32:44,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:32:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 20:32:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:32:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 20:32:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 20:32:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:44,396 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:32:44,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 3 states have internal predecessors, (760), 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) [2024-07-20 20:32:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:32:44,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 20:32:44,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.