./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --validate ./goblint.2024-08-08_07-59-58.files/mutex-meet-local/28-race_reach_41-trylock_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c091e2ee 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/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i ./goblint.2024-08-08_07-59-58.files/mutex-meet-local/28-race_reach_41-trylock_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-c091e2e-m [2024-08-13 21:24:13,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-13 21:24:13,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-13 21:24:13,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-13 21:24:13,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-13 21:24:13,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-13 21:24:13,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-13 21:24:13,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-13 21:24:13,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-13 21:24:13,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-13 21:24:13,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-13 21:24:13,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-13 21:24:13,852 INFO L153 SettingsManager]: * Use SBE=true [2024-08-13 21:24:13,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-13 21:24:13,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-13 21:24:13,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-13 21:24:13,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-13 21:24:13,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-13 21:24:13,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-13 21:24:13,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-13 21:24:13,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-13 21:24:13,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-13 21:24:13,857 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-13 21:24:13,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-13 21:24:13,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-13 21:24:13,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-13 21:24:13,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-13 21:24:13,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-13 21:24:13,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-13 21:24:13,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-13 21:24:13,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-13 21:24:13,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-13 21:24:13,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-13 21:24:13,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-13 21:24:13,862 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-13 21:24:13,863 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-13 21:24:13,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2024-08-13 21:24:14,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-13 21:24:14,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-13 21:24:14,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-13 21:24:14,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-13 21:24:14,089 INFO L274 PluginConnector]: CDTParser initialized [2024-08-13 21:24:14,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-08-13 21:24:15,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-13 21:24:15,532 INFO L384 CDTParser]: Found 1 translation units. [2024-08-13 21:24:15,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-08-13 21:24:15,542 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c95d3fe07/16f591382510485b91fd5c26cf6d34a3/FLAG81c5081a3 [2024-08-13 21:24:15,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c95d3fe07/16f591382510485b91fd5c26cf6d34a3 [2024-08-13 21:24:15,875 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-13 21:24:15,875 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-13 21:24:15,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/mutex-meet-local/28-race_reach_41-trylock_racefree.yml/witness.yml [2024-08-13 21:24:15,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-13 21:24:15,935 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-13 21:24:15,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-13 21:24:15,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-13 21:24:15,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-13 21:24:15,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 09:24:15" (1/2) ... [2024-08-13 21:24:15,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497afe12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 09:24:15, skipping insertion in model container [2024-08-13 21:24:15,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 09:24:15" (1/2) ... [2024-08-13 21:24:15,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@582e2fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 09:24:15, skipping insertion in model container [2024-08-13 21:24:15,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.08 09:24:15" (2/2) ... [2024-08-13 21:24:15,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497afe12 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:15, skipping insertion in model container [2024-08-13 21:24:15,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.08 09:24:15" (2/2) ... [2024-08-13 21:24:15,946 INFO L81 nessWitnessExtractor]: Only extracting loop invariants from correctness witness [2024-08-13 21:24:15,952 INFO L92 edCorrectnessWitness]: Witness did not contain any usable entries. [2024-08-13 21:24:15,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-13 21:24:16,236 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_41-trylock_racefree.i[30176,30189] [2024-08-13 21:24:16,263 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-13 21:24:16,278 INFO L202 MainTranslator]: Completed pre-run [2024-08-13 21:24:16,363 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_41-trylock_racefree.i[30176,30189] [2024-08-13 21:24:16,393 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-13 21:24:16,430 INFO L206 MainTranslator]: Completed translation [2024-08-13 21:24:16,431 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16 WrapperNode [2024-08-13 21:24:16,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-13 21:24:16,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-13 21:24:16,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-13 21:24:16,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-13 21:24:16,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,467 INFO L138 Inliner]: procedures = 172, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-08-13 21:24:16,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-13 21:24:16,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-13 21:24:16,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-13 21:24:16,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-13 21:24:16,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-13 21:24:16,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-13 21:24:16,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-13 21:24:16,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-13 21:24:16,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (1/1) ... [2024-08-13 21:24:16,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-13 21:24:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:16,528 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) [2024-08-13 21:24:16,534 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 [2024-08-13 21:24:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-13 21:24:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-13 21:24:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-08-13 21:24:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-13 21:24:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-08-13 21:24:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-08-13 21:24:16,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-08-13 21:24:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-13 21:24:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-08-13 21:24:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-13 21:24:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-08-13 21:24:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-13 21:24:16,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-13 21:24:16,568 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-08-13 21:24:16,695 INFO L244 CfgBuilder]: Building ICFG [2024-08-13 21:24:16,697 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-13 21:24:16,844 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-08-13 21:24:16,844 INFO L293 CfgBuilder]: Performing block encoding [2024-08-13 21:24:16,947 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-13 21:24:16,948 INFO L320 CfgBuilder]: Removed 11 assume(true) statements. [2024-08-13 21:24:16,948 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 09:24:16 BoogieIcfgContainer [2024-08-13 21:24:16,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-13 21:24:16,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-13 21:24:16,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-13 21:24:16,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-13 21:24:16,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 09:24:15" (1/4) ... [2024-08-13 21:24:16,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f7d404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 09:24:16, skipping insertion in model container [2024-08-13 21:24:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.08 09:24:15" (2/4) ... [2024-08-13 21:24:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f7d404 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.08 09:24:16, skipping insertion in model container [2024-08-13 21:24:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.08 09:24:16" (3/4) ... [2024-08-13 21:24:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f7d404 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.08 09:24:16, skipping insertion in model container [2024-08-13 21:24:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 09:24:16" (4/4) ... [2024-08-13 21:24:16,955 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2024-08-13 21:24:16,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-13 21:24:16,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-13 21:24:16,969 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-13 21:24:16,992 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-08-13 21:24:17,023 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:17,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:17,030 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) [2024-08-13 21:24:17,035 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 [2024-08-13 21:24:17,062 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:17,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:17,079 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:17,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:17,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:17,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash 845024677, now seen corresponding path program 1 times [2024-08-13 21:24:17,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:17,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867855929] [2024-08-13 21:24:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-13 21:24:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:17,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867855929] [2024-08-13 21:24:17,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867855929] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:17,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:17,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680732821] [2024-08-13 21:24:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,381 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:17,385 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) [2024-08-13 21:24:17,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-13 21:24:17,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1055626755, now seen corresponding path program 1 times [2024-08-13 21:24:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607942985] [2024-08-13 21:24:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:17,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:17,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:17,502 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:17,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:17,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-13 21:24:17,512 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-13 21:24:17,514 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:17,514 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-08-13 21:24:17,530 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-08-13 21:24:17,532 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:17,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:17,535 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) [2024-08-13 21:24:17,539 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 [2024-08-13 21:24:17,541 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:17,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:17,542 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:17,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:17,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:17,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash -961391339, now seen corresponding path program 1 times [2024-08-13 21:24:17,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:17,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463641524] [2024-08-13 21:24:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:17,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-13 21:24:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463641524] [2024-08-13 21:24:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463641524] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:17,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401002109] [2024-08-13 21:24:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:17,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:17,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,691 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:17,691 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) [2024-08-13 21:24:17,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-08-13 21:24:17,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:17,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -340144018, now seen corresponding path program 1 times [2024-08-13 21:24:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047642260] [2024-08-13 21:24:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-13 21:24:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047642260] [2024-08-13 21:24:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047642260] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:17,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:17,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816853184] [2024-08-13 21:24:17,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:17,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,924 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:17,925 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) [2024-08-13 21:24:17,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-08-13 21:24:17,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:17,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1194195111, now seen corresponding path program 1 times [2024-08-13 21:24:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:17,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262979781] [2024-08-13 21:24:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:17,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-13 21:24:18,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:18,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262979781] [2024-08-13 21:24:18,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262979781] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:18,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-13 21:24:18,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947564031] [2024-08-13 21:24:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:18,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-13 21:24:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-13 21:24:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-08-13 21:24:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,151 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:18,151 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) [2024-08-13 21:24:18,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:18,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:18,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-08-13 21:24:18,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:18,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1098199002, now seen corresponding path program 1 times [2024-08-13 21:24:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:18,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684743102] [2024-08-13 21:24:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:18,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:18,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:18,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:18,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:18,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:18,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:18,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-08-13 21:24:18,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:18,293 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:18,294 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-08-13 21:24:18,350 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-08-13 21:24:18,355 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:18,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:18,357 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) [2024-08-13 21:24:18,362 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 [2024-08-13 21:24:18,364 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:18,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:18,364 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:18,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:18,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:18,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:18,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1758727246, now seen corresponding path program 1 times [2024-08-13 21:24:18,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:18,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136140932] [2024-08-13 21:24:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:18,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-08-13 21:24:18,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136140932] [2024-08-13 21:24:18,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136140932] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:18,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:18,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054210769] [2024-08-13 21:24:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:18,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,495 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:18,495 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) [2024-08-13 21:24:18,495 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-08-13 21:24:18,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash -36456810, now seen corresponding path program 1 times [2024-08-13 21:24:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743427740] [2024-08-13 21:24:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-13 21:24:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743427740] [2024-08-13 21:24:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743427740] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:18,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:18,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:18,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387203898] [2024-08-13 21:24:18,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:18,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:18,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:18,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,754 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:18,755 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) [2024-08-13 21:24:18,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-08-13 21:24:18,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:18,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1337750014, now seen corresponding path program 1 times [2024-08-13 21:24:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:18,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46816025] [2024-08-13 21:24:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-13 21:24:18,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46816025] [2024-08-13 21:24:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46816025] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291373454] [2024-08-13 21:24:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:18,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,926 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:18,926 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) [2024-08-13 21:24:18,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:18,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:18,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-08-13 21:24:18,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:18,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 250600692, now seen corresponding path program 1 times [2024-08-13 21:24:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:18,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573716757] [2024-08-13 21:24:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:18,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:18,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:19,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:19,003 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:19,003 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:19,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:19,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-08-13 21:24:19,004 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:19,004 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:19,004 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-08-13 21:24:19,026 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-08-13 21:24:19,028 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:19,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:19,031 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) [2024-08-13 21:24:19,032 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 [2024-08-13 21:24:19,034 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:19,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:19,035 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:19,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:19,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:19,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1903069729, now seen corresponding path program 1 times [2024-08-13 21:24:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113004493] [2024-08-13 21:24:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-08-13 21:24:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:19,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113004493] [2024-08-13 21:24:19,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113004493] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:19,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:19,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640778269] [2024-08-13 21:24:19,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:19,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,160 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:19,161 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) [2024-08-13 21:24:19,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-08-13 21:24:19,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:19,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1239501359, now seen corresponding path program 1 times [2024-08-13 21:24:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778791109] [2024-08-13 21:24:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-08-13 21:24:19,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:19,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778791109] [2024-08-13 21:24:19,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778791109] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:19,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:19,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670240152] [2024-08-13 21:24:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:19,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:19,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,494 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:19,494 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) [2024-08-13 21:24:19,494 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,494 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:19,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-08-13 21:24:19,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:19,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash 651467168, now seen corresponding path program 1 times [2024-08-13 21:24:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:19,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693365905] [2024-08-13 21:24:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:19,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-13 21:24:19,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:19,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693365905] [2024-08-13 21:24:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693365905] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:19,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693777903] [2024-08-13 21:24:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:19,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:19,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,682 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:19,682 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) [2024-08-13 21:24:19,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:19,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:19,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-08-13 21:24:19,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:19,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1848403002, now seen corresponding path program 1 times [2024-08-13 21:24:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:19,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100479295] [2024-08-13 21:24:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:19,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:19,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:19,781 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:19,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:19,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:19,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-08-13 21:24:19,784 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:19,784 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:19,784 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-08-13 21:24:19,801 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-08-13 21:24:19,803 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:19,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:19,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:19,805 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) [2024-08-13 21:24:19,806 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 [2024-08-13 21:24:19,810 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:19,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:19,810 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:19,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:19,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:19,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:19,936 INFO L85 PathProgramCache]: Analyzing trace with hash -513945217, now seen corresponding path program 1 times [2024-08-13 21:24:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:19,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464304481] [2024-08-13 21:24:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-08-13 21:24:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464304481] [2024-08-13 21:24:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464304481] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088580149] [2024-08-13 21:24:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:19,977 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:19,977 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) [2024-08-13 21:24:19,977 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-08-13 21:24:20,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:20,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:20,267 INFO L85 PathProgramCache]: Analyzing trace with hash 252279835, now seen corresponding path program 1 times [2024-08-13 21:24:20,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:20,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993011261] [2024-08-13 21:24:20,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:20,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-08-13 21:24:20,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:20,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993011261] [2024-08-13 21:24:20,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993011261] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:20,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:20,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:20,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163452954] [2024-08-13 21:24:20,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:20,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:20,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:20,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,332 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:20,333 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) [2024-08-13 21:24:20,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,333 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-08-13 21:24:20,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:20,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash -8569635, now seen corresponding path program 1 times [2024-08-13 21:24:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:20,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400992715] [2024-08-13 21:24:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-08-13 21:24:20,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:20,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400992715] [2024-08-13 21:24:20,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400992715] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:20,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:20,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654107176] [2024-08-13 21:24:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:20,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,557 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:20,557 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) [2024-08-13 21:24:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:20,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-08-13 21:24:20,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:20,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 107956306, now seen corresponding path program 1 times [2024-08-13 21:24:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928922336] [2024-08-13 21:24:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:20,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:20,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:20,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:20,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:20,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:20,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-08-13 21:24:20,655 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:20,655 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:20,655 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-08-13 21:24:20,673 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-08-13 21:24:20,675 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:20,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:20,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:20,677 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) [2024-08-13 21:24:20,678 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 [2024-08-13 21:24:20,680 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:20,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:20,681 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:20,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:20,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:20,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1837398433, now seen corresponding path program 1 times [2024-08-13 21:24:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127185384] [2024-08-13 21:24:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-08-13 21:24:20,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:20,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127185384] [2024-08-13 21:24:20,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127185384] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:20,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:20,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685832287] [2024-08-13 21:24:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:20,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:20,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:20,854 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:20,854 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) [2024-08-13 21:24:20,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-08-13 21:24:21,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:21,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash 645923045, now seen corresponding path program 1 times [2024-08-13 21:24:21,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:21,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933121913] [2024-08-13 21:24:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:21,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-08-13 21:24:21,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:21,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933121913] [2024-08-13 21:24:21,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933121913] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:21,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298327048] [2024-08-13 21:24:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:21,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:21,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,321 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:21,322 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) [2024-08-13 21:24:21,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:21,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-08-13 21:24:21,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:21,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1912577434, now seen corresponding path program 1 times [2024-08-13 21:24:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:21,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429264280] [2024-08-13 21:24:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-08-13 21:24:21,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:21,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429264280] [2024-08-13 21:24:21,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429264280] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:21,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941787937] [2024-08-13 21:24:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:21,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,652 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:21,652 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) [2024-08-13 21:24:21,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:21,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:21,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-08-13 21:24:21,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:21,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1869084915, now seen corresponding path program 1 times [2024-08-13 21:24:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:21,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483882443] [2024-08-13 21:24:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:21,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:21,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:21,798 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:21,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:21,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:21,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-08-13 21:24:21,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:21,800 WARN L234 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:21,800 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-08-13 21:24:21,818 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2024-08-13 21:24:21,819 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:21,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:21,822 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) [2024-08-13 21:24:21,825 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 [2024-08-13 21:24:21,829 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:21,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:21,830 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:21,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:22,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:22,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1272572684, now seen corresponding path program 1 times [2024-08-13 21:24:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:22,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035565311] [2024-08-13 21:24:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-08-13 21:24:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:22,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035565311] [2024-08-13 21:24:22,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035565311] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:22,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:22,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:22,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518728139] [2024-08-13 21:24:22,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:22,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:22,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,028 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:22,028 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) [2024-08-13 21:24:22,028 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-08-13 21:24:22,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:22,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash -108370620, now seen corresponding path program 1 times [2024-08-13 21:24:22,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:22,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641171919] [2024-08-13 21:24:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:22,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-08-13 21:24:22,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:22,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641171919] [2024-08-13 21:24:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641171919] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:22,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:22,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944433375] [2024-08-13 21:24:22,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:22,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:22,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,631 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:22,631 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) [2024-08-13 21:24:22,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-08-13 21:24:22,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:22,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -807950142, now seen corresponding path program 1 times [2024-08-13 21:24:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083014078] [2024-08-13 21:24:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-08-13 21:24:22,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:22,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083014078] [2024-08-13 21:24:22,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083014078] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:22,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:22,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:22,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474835947] [2024-08-13 21:24:22,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:22,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:22,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,959 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:22,960 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) [2024-08-13 21:24:22,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:22,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:22,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:23,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-08-13 21:24:23,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:23,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 798365569, now seen corresponding path program 1 times [2024-08-13 21:24:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:23,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300434208] [2024-08-13 21:24:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:23,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:23,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:23,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:23,107 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:23,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:23,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:23,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-08-13 21:24:23,108 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:23,109 WARN L234 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:23,109 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-08-13 21:24:23,131 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-08-13 21:24:23,133 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:23,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:23,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:23,137 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) [2024-08-13 21:24:23,139 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 [2024-08-13 21:24:23,140 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:23,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:23,141 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:23,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:23,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1710420317, now seen corresponding path program 1 times [2024-08-13 21:24:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097108240] [2024-08-13 21:24:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-08-13 21:24:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097108240] [2024-08-13 21:24:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097108240] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226324590] [2024-08-13 21:24:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:23,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:23,401 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:23,401 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) [2024-08-13 21:24:23,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-08-13 21:24:23,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:23,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 309822271, now seen corresponding path program 1 times [2024-08-13 21:24:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50934468] [2024-08-13 21:24:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-08-13 21:24:24,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50934468] [2024-08-13 21:24:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50934468] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:24,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190239605] [2024-08-13 21:24:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:24,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,120 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:24,121 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) [2024-08-13 21:24:24,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:24,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-08-13 21:24:24,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:24,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:24,343 INFO L85 PathProgramCache]: Analyzing trace with hash -400891425, now seen corresponding path program 1 times [2024-08-13 21:24:24,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:24,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70410272] [2024-08-13 21:24:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:24,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-08-13 21:24:24,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:24,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70410272] [2024-08-13 21:24:24,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70410272] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:24,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:24,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:24,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660898663] [2024-08-13 21:24:24,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:24,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:24,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,539 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:24,539 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) [2024-08-13 21:24:24,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:24,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:24,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-08-13 21:24:24,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:24,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1533579287, now seen corresponding path program 1 times [2024-08-13 21:24:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:24,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961145446] [2024-08-13 21:24:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:24,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:24,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:24,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:24,742 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:24,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:24,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-08-13 21:24:24,744 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:24,744 WARN L234 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:24,744 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2024-08-13 21:24:24,771 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-08-13 21:24:24,773 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:24,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:24,777 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) [2024-08-13 21:24:24,778 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 [2024-08-13 21:24:24,780 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:24,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:24,781 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:24,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:25,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:25,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2087875963, now seen corresponding path program 1 times [2024-08-13 21:24:25,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:25,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177614126] [2024-08-13 21:24:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-08-13 21:24:25,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:25,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177614126] [2024-08-13 21:24:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177614126] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:25,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687248416] [2024-08-13 21:24:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:25,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:25,114 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:25,114 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) [2024-08-13 21:24:25,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:25,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-08-13 21:24:25,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:25,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash 799478181, now seen corresponding path program 1 times [2024-08-13 21:24:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866283536] [2024-08-13 21:24:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-08-13 21:24:25,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866283536] [2024-08-13 21:24:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866283536] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777438237] [2024-08-13 21:24:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:25,947 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:25,947 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) [2024-08-13 21:24:25,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:25,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:26,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-08-13 21:24:26,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:26,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash 672265143, now seen corresponding path program 1 times [2024-08-13 21:24:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:26,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322397492] [2024-08-13 21:24:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-08-13 21:24:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322397492] [2024-08-13 21:24:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322397492] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:26,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:26,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637669545] [2024-08-13 21:24:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:26,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:26,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:26,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:26,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:26,367 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:26,367 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) [2024-08-13 21:24:26,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:26,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:26,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-08-13 21:24:26,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:26,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1134736859, now seen corresponding path program 1 times [2024-08-13 21:24:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053611754] [2024-08-13 21:24:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:26,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:26,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:26,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:26,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:26,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:26,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-08-13 21:24:26,590 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:26,590 WARN L234 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:26,591 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2024-08-13 21:24:26,657 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-08-13 21:24:26,660 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:26,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:26,662 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) [2024-08-13 21:24:26,666 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 [2024-08-13 21:24:26,670 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:26,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:26,671 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:26,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:26,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:26,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:26,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1462758741, now seen corresponding path program 1 times [2024-08-13 21:24:26,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:26,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50839113] [2024-08-13 21:24:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-08-13 21:24:27,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:27,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50839113] [2024-08-13 21:24:27,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50839113] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:27,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:27,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:27,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141694484] [2024-08-13 21:24:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:27,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:27,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:27,005 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:27,005 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) [2024-08-13 21:24:27,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:27,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-08-13 21:24:27,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:27,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2011667381, now seen corresponding path program 1 times [2024-08-13 21:24:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:27,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891628233] [2024-08-13 21:24:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-08-13 21:24:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891628233] [2024-08-13 21:24:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891628233] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179541755] [2024-08-13 21:24:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,116 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:28,116 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) [2024-08-13 21:24:28,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-08-13 21:24:28,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:28,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1579465210, now seen corresponding path program 1 times [2024-08-13 21:24:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119167766] [2024-08-13 21:24:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-08-13 21:24:28,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119167766] [2024-08-13 21:24:28,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119167766] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:28,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:28,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:28,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176963517] [2024-08-13 21:24:28,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,613 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:28,613 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) [2024-08-13 21:24:28,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:28,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:28,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-08-13 21:24:28,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:28,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash -977322263, now seen corresponding path program 1 times [2024-08-13 21:24:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:28,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999367415] [2024-08-13 21:24:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:28,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:28,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:28,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:28,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:28,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:28,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-08-13 21:24:28,916 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:28,917 WARN L234 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:28,917 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2024-08-13 21:24:28,940 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2024-08-13 21:24:28,941 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:28,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:28,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:28,943 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) [2024-08-13 21:24:28,944 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 [2024-08-13 21:24:28,946 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:28,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:28,946 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:28,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:29,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:29,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2128788922, now seen corresponding path program 1 times [2024-08-13 21:24:29,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:29,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954070346] [2024-08-13 21:24:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:29,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-08-13 21:24:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:29,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954070346] [2024-08-13 21:24:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954070346] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:29,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:29,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:29,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120967714] [2024-08-13 21:24:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:29,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:29,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:29,352 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:29,352 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) [2024-08-13 21:24:29,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-08-13 21:24:30,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:30,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1518385607, now seen corresponding path program 1 times [2024-08-13 21:24:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:30,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590872051] [2024-08-13 21:24:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-08-13 21:24:30,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590872051] [2024-08-13 21:24:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590872051] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:30,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481635740] [2024-08-13 21:24:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,484 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:30,485 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) [2024-08-13 21:24:30,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:30,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-08-13 21:24:30,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:30,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1391366251, now seen corresponding path program 1 times [2024-08-13 21:24:30,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047272878] [2024-08-13 21:24:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-08-13 21:24:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047272878] [2024-08-13 21:24:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047272878] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:30,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:30,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296189621] [2024-08-13 21:24:30,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:30,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:30,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,981 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:30,981 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) [2024-08-13 21:24:30,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:30,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:30,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:31,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-08-13 21:24:31,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:31,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash -666825313, now seen corresponding path program 1 times [2024-08-13 21:24:31,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:31,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654415907] [2024-08-13 21:24:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:31,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:31,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:31,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:31,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:31,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:31,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:31,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-08-13 21:24:31,280 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:31,280 WARN L234 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:31,280 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2024-08-13 21:24:31,305 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-08-13 21:24:31,307 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:31,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:31,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:31,312 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) [2024-08-13 21:24:31,312 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 [2024-08-13 21:24:31,314 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:31,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:31,315 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:31,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:31,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:31,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2026805537, now seen corresponding path program 1 times [2024-08-13 21:24:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:31,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434570599] [2024-08-13 21:24:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-08-13 21:24:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434570599] [2024-08-13 21:24:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434570599] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:31,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:31,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541530274] [2024-08-13 21:24:31,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:31,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:31,792 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:31,792 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) [2024-08-13 21:24:31,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:32,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-08-13 21:24:32,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:32,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1560412487, now seen corresponding path program 1 times [2024-08-13 21:24:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695067326] [2024-08-13 21:24:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:32,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-08-13 21:24:32,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695067326] [2024-08-13 21:24:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695067326] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:32,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:32,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106636002] [2024-08-13 21:24:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:32,962 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:32,962 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) [2024-08-13 21:24:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:32,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-08-13 21:24:33,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:33,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2054504163, now seen corresponding path program 1 times [2024-08-13 21:24:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:33,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881405486] [2024-08-13 21:24:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:33,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-08-13 21:24:33,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:33,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881405486] [2024-08-13 21:24:33,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881405486] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:33,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:33,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118350700] [2024-08-13 21:24:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:33,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:33,703 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:33,703 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) [2024-08-13 21:24:33,703 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:33,703 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:33,703 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:34,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-08-13 21:24:34,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:34,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2997282, now seen corresponding path program 1 times [2024-08-13 21:24:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:34,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056917104] [2024-08-13 21:24:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:34,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:34,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:34,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:34,137 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:34,137 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:34,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:34,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-08-13 21:24:34,139 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:34,139 WARN L234 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:34,139 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2024-08-13 21:24:34,174 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2024-08-13 21:24:34,177 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:34,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:34,179 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) [2024-08-13 21:24:34,182 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 [2024-08-13 21:24:34,187 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:34,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:34,187 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:34,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:34,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:34,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1037229407, now seen corresponding path program 1 times [2024-08-13 21:24:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844034149] [2024-08-13 21:24:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-08-13 21:24:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844034149] [2024-08-13 21:24:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844034149] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:34,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907170608] [2024-08-13 21:24:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:34,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:34,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:34,751 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:34,751 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) [2024-08-13 21:24:34,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-08-13 21:24:36,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:36,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1680506830, now seen corresponding path program 1 times [2024-08-13 21:24:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:36,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874314038] [2024-08-13 21:24:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:36,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-08-13 21:24:36,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874314038] [2024-08-13 21:24:36,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874314038] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:36,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:36,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:36,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820207385] [2024-08-13 21:24:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:36,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:36,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,270 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:36,271 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) [2024-08-13 21:24:36,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-08-13 21:24:36,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:36,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2099040857, now seen corresponding path program 1 times [2024-08-13 21:24:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262605640] [2024-08-13 21:24:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-08-13 21:24:36,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262605640] [2024-08-13 21:24:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262605640] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:36,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:36,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830556227] [2024-08-13 21:24:36,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:36,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:36,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,817 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:36,817 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) [2024-08-13 21:24:36,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:36,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:36,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:37,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-08-13 21:24:37,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:37,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1653623802, now seen corresponding path program 1 times [2024-08-13 21:24:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272320283] [2024-08-13 21:24:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:37,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:37,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:37,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:37,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:37,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:37,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-08-13 21:24:37,236 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:37,236 WARN L234 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:37,236 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2024-08-13 21:24:37,264 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2024-08-13 21:24:37,266 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:37,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:37,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:37,271 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) [2024-08-13 21:24:37,271 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 [2024-08-13 21:24:37,273 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:37,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:37,274 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:37,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:37,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:37,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2081256615, now seen corresponding path program 1 times [2024-08-13 21:24:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686786118] [2024-08-13 21:24:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-08-13 21:24:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686786118] [2024-08-13 21:24:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686786118] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:37,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:37,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904550444] [2024-08-13 21:24:37,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:37,916 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:37,916 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) [2024-08-13 21:24:37,917 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:39,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-08-13 21:24:39,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:39,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash -18102573, now seen corresponding path program 1 times [2024-08-13 21:24:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:39,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80939560] [2024-08-13 21:24:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:39,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-08-13 21:24:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80939560] [2024-08-13 21:24:39,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80939560] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:39,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:39,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329178367] [2024-08-13 21:24:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:39,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:39,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:39,344 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:39,344 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) [2024-08-13 21:24:39,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:39,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-08-13 21:24:39,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1939509391, now seen corresponding path program 1 times [2024-08-13 21:24:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259425303] [2024-08-13 21:24:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-08-13 21:24:40,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:40,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259425303] [2024-08-13 21:24:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259425303] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495342413] [2024-08-13 21:24:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:40,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:40,110 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:40,110 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) [2024-08-13 21:24:40,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:40,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:40,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:40,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-08-13 21:24:40,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:40,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash -195661582, now seen corresponding path program 1 times [2024-08-13 21:24:40,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:40,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745331009] [2024-08-13 21:24:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:40,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:40,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:40,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:40,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:40,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:40,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:40,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-08-13 21:24:40,588 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-13 21:24:40,589 WARN L234 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:40,589 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2024-08-13 21:24:40,620 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2024-08-13 21:24:40,625 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:40,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:40,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:40,627 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) [2024-08-13 21:24:40,628 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 [2024-08-13 21:24:40,630 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:40,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:40,630 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:40,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:41,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:41,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1240694744, now seen corresponding path program 1 times [2024-08-13 21:24:41,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:41,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762512011] [2024-08-13 21:24:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:41,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-08-13 21:24:41,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:41,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762512011] [2024-08-13 21:24:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762512011] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:41,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:41,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928320078] [2024-08-13 21:24:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:41,214 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:41,214 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) [2024-08-13 21:24:41,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:43,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-08-13 21:24:43,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:43,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1107236978, now seen corresponding path program 1 times [2024-08-13 21:24:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808153831] [2024-08-13 21:24:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-08-13 21:24:43,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:43,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808153831] [2024-08-13 21:24:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808153831] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:43,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295955820] [2024-08-13 21:24:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:43,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:43,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:43,210 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:43,210 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) [2024-08-13 21:24:43,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:43,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:43,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-08-13 21:24:43,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:43,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -618317826, now seen corresponding path program 2 times [2024-08-13 21:24:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717577587] [2024-08-13 21:24:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-08-13 21:24:44,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717577587] [2024-08-13 21:24:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717577587] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:44,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202018351] [2024-08-13 21:24:44,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:44,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:44,057 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:44,057 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) [2024-08-13 21:24:44,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:44,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:44,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-08-13 21:24:44,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:44,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1444611058, now seen corresponding path program 1 times [2024-08-13 21:24:44,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:44,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234600490] [2024-08-13 21:24:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:44,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:44,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:44,751 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:44,751 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:44,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:44,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-08-13 21:24:44,753 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:24:44,753 WARN L234 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:44,753 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2024-08-13 21:24:44,803 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-08-13 21:24:44,806 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:44,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:44,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:44,807 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) [2024-08-13 21:24:44,809 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 [2024-08-13 21:24:44,810 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:44,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:44,811 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:44,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:45,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:45,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1639611069, now seen corresponding path program 1 times [2024-08-13 21:24:45,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:45,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32730204] [2024-08-13 21:24:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-08-13 21:24:45,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32730204] [2024-08-13 21:24:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32730204] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:45,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:45,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426126430] [2024-08-13 21:24:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:45,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:45,608 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:45,608 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) [2024-08-13 21:24:45,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:47,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-08-13 21:24:47,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:47,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1962110856, now seen corresponding path program 1 times [2024-08-13 21:24:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466116738] [2024-08-13 21:24:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-08-13 21:24:47,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466116738] [2024-08-13 21:24:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466116738] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:47,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:47,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:47,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641296015] [2024-08-13 21:24:47,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:47,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:47,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:47,497 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:47,497 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) [2024-08-13 21:24:47,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:47,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:48,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-08-13 21:24:48,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:48,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 836796234, now seen corresponding path program 2 times [2024-08-13 21:24:48,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446692162] [2024-08-13 21:24:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:48,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-08-13 21:24:48,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:48,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446692162] [2024-08-13 21:24:48,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446692162] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:48,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:48,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166607192] [2024-08-13 21:24:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:48,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:48,437 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:48,437 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) [2024-08-13 21:24:48,438 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:48,438 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:48,438 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:49,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-08-13 21:24:49,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:49,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1723217037, now seen corresponding path program 1 times [2024-08-13 21:24:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:49,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949318030] [2024-08-13 21:24:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:49,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:49,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:49,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:49,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:49,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:49,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-08-13 21:24:49,144 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:24:49,144 WARN L234 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:49,144 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2024-08-13 21:24:49,184 INFO L144 ThreadInstanceAdder]: Constructed 17 joinOtherThreadTransitions. [2024-08-13 21:24:49,186 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:49,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:49,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:49,188 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) [2024-08-13 21:24:49,191 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 [2024-08-13 21:24:49,195 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:49,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:49,196 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:49,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:49,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:49,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1632044959, now seen corresponding path program 1 times [2024-08-13 21:24:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920189517] [2024-08-13 21:24:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-08-13 21:24:49,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:49,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920189517] [2024-08-13 21:24:49,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920189517] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:49,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:49,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762228672] [2024-08-13 21:24:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:49,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:49,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:49,940 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:49,940 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) [2024-08-13 21:24:49,940 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-08-13 21:24:51,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:51,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash 855859731, now seen corresponding path program 1 times [2024-08-13 21:24:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382058362] [2024-08-13 21:24:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-08-13 21:24:52,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:52,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382058362] [2024-08-13 21:24:52,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382058362] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:52,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:52,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:52,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246999741] [2024-08-13 21:24:52,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:52,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:52,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:52,085 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:52,085 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) [2024-08-13 21:24:52,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:52,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-08-13 21:24:52,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:52,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:52,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1266213375, now seen corresponding path program 2 times [2024-08-13 21:24:52,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:52,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693630037] [2024-08-13 21:24:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:52,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-08-13 21:24:52,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:52,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693630037] [2024-08-13 21:24:52,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693630037] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:52,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:52,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:52,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770023983] [2024-08-13 21:24:52,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:52,857 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:52,857 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) [2024-08-13 21:24:52,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:52,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:52,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:53,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-08-13 21:24:53,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:53,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:53,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1542092360, now seen corresponding path program 1 times [2024-08-13 21:24:53,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755172265] [2024-08-13 21:24:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:53,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:53,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:53,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:53,899 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:53,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:53,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:53,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-08-13 21:24:53,901 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:24:53,901 WARN L234 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:53,901 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2024-08-13 21:24:53,946 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-08-13 21:24:53,949 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:53,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:53,951 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) [2024-08-13 21:24:53,958 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 [2024-08-13 21:24:53,961 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:53,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:53,961 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:53,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:24:54,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:54,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:54,931 INFO L85 PathProgramCache]: Analyzing trace with hash -429103851, now seen corresponding path program 1 times [2024-08-13 21:24:54,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:54,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643842573] [2024-08-13 21:24:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:54,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-08-13 21:24:54,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643842573] [2024-08-13 21:24:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643842573] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:54,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:54,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:24:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724741362] [2024-08-13 21:24:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:54,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:24:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:24:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:24:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:54,980 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:54,980 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) [2024-08-13 21:24:54,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-08-13 21:24:57,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:57,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash 242536231, now seen corresponding path program 1 times [2024-08-13 21:24:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339089546] [2024-08-13 21:24:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-08-13 21:24:57,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339089546] [2024-08-13 21:24:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339089546] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:57,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:57,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111918776] [2024-08-13 21:24:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:24:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:24:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:24:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:57,821 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:57,821 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) [2024-08-13 21:24:57,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:57,823 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:58,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-08-13 21:24:58,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:58,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1172492885, now seen corresponding path program 2 times [2024-08-13 21:24:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:58,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857212092] [2024-08-13 21:24:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:24:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-08-13 21:24:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:24:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857212092] [2024-08-13 21:24:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857212092] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:24:58,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:24:58,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:24:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981756025] [2024-08-13 21:24:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:24:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:24:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:24:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:24:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:24:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:58,679 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:24:58,679 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) [2024-08-13 21:24:58,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:58,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:58,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:24:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:24:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:24:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-08-13 21:24:59,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:24:59,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:24:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1607318363, now seen corresponding path program 1 times [2024-08-13 21:24:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:24:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129925634] [2024-08-13 21:24:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:24:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:24:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:59,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:24:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:24:59,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:24:59,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:24:59,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:24:59,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:24:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-08-13 21:24:59,746 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:24:59,746 WARN L234 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:24:59,746 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2024-08-13 21:24:59,789 INFO L144 ThreadInstanceAdder]: Constructed 19 joinOtherThreadTransitions. [2024-08-13 21:24:59,792 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:59,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:24:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:24:59,794 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) [2024-08-13 21:24:59,796 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 [2024-08-13 21:24:59,799 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:24:59,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:24:59,799 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:24:59,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:00,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:00,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash -835720090, now seen corresponding path program 1 times [2024-08-13 21:25:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353726786] [2024-08-13 21:25:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-08-13 21:25:00,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:00,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353726786] [2024-08-13 21:25:00,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353726786] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:00,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:00,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897818610] [2024-08-13 21:25:00,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:00,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:00,725 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:00,726 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) [2024-08-13 21:25:00,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-08-13 21:25:03,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:03,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash -516959127, now seen corresponding path program 1 times [2024-08-13 21:25:03,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:03,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670125886] [2024-08-13 21:25:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-08-13 21:25:03,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:03,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670125886] [2024-08-13 21:25:03,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670125886] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:03,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:03,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:03,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284249486] [2024-08-13 21:25:03,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:03,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:03,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:03,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:03,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:03,659 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:03,660 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) [2024-08-13 21:25:03,660 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:03,660 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:04,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-08-13 21:25:04,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:04,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:04,234 INFO L85 PathProgramCache]: Analyzing trace with hash 681548099, now seen corresponding path program 2 times [2024-08-13 21:25:04,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350612669] [2024-08-13 21:25:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:04,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-08-13 21:25:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350612669] [2024-08-13 21:25:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350612669] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:04,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:04,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:04,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118951195] [2024-08-13 21:25:04,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:04,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:04,486 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:04,486 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) [2024-08-13 21:25:04,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:04,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:04,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:05,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-08-13 21:25:05,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:05,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -453866674, now seen corresponding path program 1 times [2024-08-13 21:25:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6244396] [2024-08-13 21:25:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:05,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:05,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:05,649 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:05,649 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:05,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:05,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-08-13 21:25:05,651 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:05,651 WARN L234 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:05,651 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2024-08-13 21:25:05,707 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2024-08-13 21:25:05,710 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:05,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:05,712 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) [2024-08-13 21:25:05,717 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 [2024-08-13 21:25:05,722 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:05,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:05,723 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:05,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:06,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:06,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1973585149, now seen corresponding path program 1 times [2024-08-13 21:25:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:06,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933869404] [2024-08-13 21:25:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-08-13 21:25:06,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:06,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933869404] [2024-08-13 21:25:06,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933869404] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:06,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:06,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611381707] [2024-08-13 21:25:06,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:06,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:06,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:06,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:06,949 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:06,949 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) [2024-08-13 21:25:06,949 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:09,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-08-13 21:25:09,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:09,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1689230416, now seen corresponding path program 1 times [2024-08-13 21:25:09,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:09,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429168321] [2024-08-13 21:25:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:09,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-08-13 21:25:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429168321] [2024-08-13 21:25:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429168321] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:09,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:09,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:09,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482404169] [2024-08-13 21:25:09,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:09,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:09,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:09,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:09,786 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:09,786 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) [2024-08-13 21:25:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:09,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:10,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-08-13 21:25:10,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:10,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1825008970, now seen corresponding path program 2 times [2024-08-13 21:25:10,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:10,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038559390] [2024-08-13 21:25:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-08-13 21:25:10,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038559390] [2024-08-13 21:25:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038559390] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:10,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:10,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:10,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413262175] [2024-08-13 21:25:10,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:10,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:10,703 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:10,703 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) [2024-08-13 21:25:10,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:10,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:10,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:11,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-08-13 21:25:11,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:11,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1491382143, now seen corresponding path program 1 times [2024-08-13 21:25:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:11,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855047477] [2024-08-13 21:25:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:11,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:11,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:11,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:11,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:11,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:11,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-08-13 21:25:11,717 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:11,718 WARN L234 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:11,718 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2024-08-13 21:25:11,758 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-08-13 21:25:11,764 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:11,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:11,770 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) [2024-08-13 21:25:11,771 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 [2024-08-13 21:25:11,773 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:11,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:11,774 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:11,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:12,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:12,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash 17202527, now seen corresponding path program 1 times [2024-08-13 21:25:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:12,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523121361] [2024-08-13 21:25:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:12,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-08-13 21:25:12,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523121361] [2024-08-13 21:25:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523121361] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:12,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:12,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:12,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682596574] [2024-08-13 21:25:12,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:12,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:12,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:12,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:12,865 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:12,866 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) [2024-08-13 21:25:12,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:16,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-08-13 21:25:16,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:16,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2030793766, now seen corresponding path program 1 times [2024-08-13 21:25:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:16,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129949006] [2024-08-13 21:25:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:16,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-08-13 21:25:16,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:16,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129949006] [2024-08-13 21:25:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129949006] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763245460] [2024-08-13 21:25:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:16,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:16,208 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:16,208 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) [2024-08-13 21:25:16,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:16,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:16,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-08-13 21:25:16,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:16,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:16,824 INFO L85 PathProgramCache]: Analyzing trace with hash -719379182, now seen corresponding path program 2 times [2024-08-13 21:25:16,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:16,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114182068] [2024-08-13 21:25:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:16,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-08-13 21:25:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114182068] [2024-08-13 21:25:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114182068] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:17,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069233671] [2024-08-13 21:25:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:17,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:17,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:17,143 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:17,143 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) [2024-08-13 21:25:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:17,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:18,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-08-13 21:25:18,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:18,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1572089459, now seen corresponding path program 1 times [2024-08-13 21:25:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:18,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409737516] [2024-08-13 21:25:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:18,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:18,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:18,449 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:18,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:18,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:18,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-08-13 21:25:18,450 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:18,450 WARN L234 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:18,450 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2024-08-13 21:25:18,505 INFO L144 ThreadInstanceAdder]: Constructed 22 joinOtherThreadTransitions. [2024-08-13 21:25:18,508 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:18,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:18,512 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) [2024-08-13 21:25:18,513 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 [2024-08-13 21:25:18,515 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:18,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:18,517 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:18,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:19,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:19,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 581259669, now seen corresponding path program 1 times [2024-08-13 21:25:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869679067] [2024-08-13 21:25:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-08-13 21:25:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869679067] [2024-08-13 21:25:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869679067] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:19,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:19,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137282977] [2024-08-13 21:25:19,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:19,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:19,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:19,712 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:19,712 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) [2024-08-13 21:25:19,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:23,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-08-13 21:25:23,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:23,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1936284926, now seen corresponding path program 1 times [2024-08-13 21:25:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469886282] [2024-08-13 21:25:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-08-13 21:25:23,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469886282] [2024-08-13 21:25:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469886282] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:23,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:23,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:23,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112668500] [2024-08-13 21:25:23,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:23,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:23,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:23,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:23,195 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:23,195 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) [2024-08-13 21:25:23,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:23,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-08-13 21:25:23,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:23,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash 51943100, now seen corresponding path program 2 times [2024-08-13 21:25:23,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:23,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53630807] [2024-08-13 21:25:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-08-13 21:25:24,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53630807] [2024-08-13 21:25:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53630807] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:24,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:24,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:24,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464095601] [2024-08-13 21:25:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:24,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:24,268 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:24,268 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) [2024-08-13 21:25:24,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:24,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:24,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-08-13 21:25:25,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:25,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 750440123, now seen corresponding path program 1 times [2024-08-13 21:25:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502716064] [2024-08-13 21:25:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:25,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:25,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:25,468 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:25,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:25,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-08-13 21:25:25,469 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:25,469 WARN L234 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:25,469 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2024-08-13 21:25:25,519 INFO L144 ThreadInstanceAdder]: Constructed 23 joinOtherThreadTransitions. [2024-08-13 21:25:25,524 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:25,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:25,527 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) [2024-08-13 21:25:25,530 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 [2024-08-13 21:25:25,532 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:25,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:25,533 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:25,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:27,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:27,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:27,027 INFO L85 PathProgramCache]: Analyzing trace with hash -749606500, now seen corresponding path program 1 times [2024-08-13 21:25:27,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:27,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097416815] [2024-08-13 21:25:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:27,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-08-13 21:25:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097416815] [2024-08-13 21:25:27,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097416815] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:27,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:27,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236023824] [2024-08-13 21:25:27,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:27,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:27,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:27,084 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:27,085 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) [2024-08-13 21:25:27,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:30,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-08-13 21:25:30,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:30,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1871899303, now seen corresponding path program 1 times [2024-08-13 21:25:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789658751] [2024-08-13 21:25:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-08-13 21:25:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:30,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789658751] [2024-08-13 21:25:30,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789658751] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:30,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:30,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461509809] [2024-08-13 21:25:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:30,957 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:30,957 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) [2024-08-13 21:25:30,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:30,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-08-13 21:25:31,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:31,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1650124085, now seen corresponding path program 2 times [2024-08-13 21:25:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:31,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950737586] [2024-08-13 21:25:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-08-13 21:25:32,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950737586] [2024-08-13 21:25:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950737586] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007859208] [2024-08-13 21:25:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:32,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:32,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:32,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:32,134 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:32,135 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) [2024-08-13 21:25:32,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:32,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:32,135 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:33,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-08-13 21:25:33,371 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:33,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1145483907, now seen corresponding path program 1 times [2024-08-13 21:25:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:33,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449698372] [2024-08-13 21:25:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:33,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:33,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:33,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:33,469 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:33,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:33,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:33,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-08-13 21:25:33,471 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:33,471 WARN L234 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:33,471 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2024-08-13 21:25:33,519 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2024-08-13 21:25:33,522 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:33,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:33,526 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) [2024-08-13 21:25:33,531 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 [2024-08-13 21:25:33,533 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:33,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:33,533 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:33,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:35,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:35,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -265909233, now seen corresponding path program 1 times [2024-08-13 21:25:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099194401] [2024-08-13 21:25:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-08-13 21:25:35,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099194401] [2024-08-13 21:25:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099194401] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:35,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157062425] [2024-08-13 21:25:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:35,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:35,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:35,065 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:35,065 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) [2024-08-13 21:25:35,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:38,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-08-13 21:25:38,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:38,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash -721364695, now seen corresponding path program 1 times [2024-08-13 21:25:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:38,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908334712] [2024-08-13 21:25:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-08-13 21:25:38,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908334712] [2024-08-13 21:25:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908334712] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:38,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763505770] [2024-08-13 21:25:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:38,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:38,994 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:38,994 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) [2024-08-13 21:25:38,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:38,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-08-13 21:25:39,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:39,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash 961183425, now seen corresponding path program 2 times [2024-08-13 21:25:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:39,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987906740] [2024-08-13 21:25:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-08-13 21:25:40,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987906740] [2024-08-13 21:25:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987906740] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:40,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:40,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519066080] [2024-08-13 21:25:40,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:40,374 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:40,375 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) [2024-08-13 21:25:40,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:40,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:40,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:41,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-08-13 21:25:41,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:41,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1195777746, now seen corresponding path program 1 times [2024-08-13 21:25:41,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:41,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061571697] [2024-08-13 21:25:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:41,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:41,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:41,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:41,897 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:41,897 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:41,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:41,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-08-13 21:25:41,898 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:41,899 WARN L234 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:41,899 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2024-08-13 21:25:41,951 INFO L144 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2024-08-13 21:25:41,960 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:41,963 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) [2024-08-13 21:25:41,966 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 [2024-08-13 21:25:41,967 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:41,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:41,968 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:41,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:43,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:43,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1057812851, now seen corresponding path program 1 times [2024-08-13 21:25:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:43,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122068203] [2024-08-13 21:25:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:43,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-08-13 21:25:43,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:43,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122068203] [2024-08-13 21:25:43,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122068203] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:43,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105952761] [2024-08-13 21:25:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:43,529 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:43,529 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) [2024-08-13 21:25:43,529 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:47,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-08-13 21:25:47,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:47,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1472531099, now seen corresponding path program 1 times [2024-08-13 21:25:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920180211] [2024-08-13 21:25:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-08-13 21:25:47,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:47,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920180211] [2024-08-13 21:25:47,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920180211] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:47,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:47,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631818160] [2024-08-13 21:25:47,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:47,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:47,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:47,732 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:47,733 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) [2024-08-13 21:25:47,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:47,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:48,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-08-13 21:25:48,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:48,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 852248349, now seen corresponding path program 2 times [2024-08-13 21:25:48,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:48,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042055562] [2024-08-13 21:25:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:48,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-08-13 21:25:48,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:48,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042055562] [2024-08-13 21:25:48,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042055562] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:48,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:48,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348716720] [2024-08-13 21:25:48,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:48,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:48,768 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:48,769 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) [2024-08-13 21:25:48,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:48,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:48,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:25:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-08-13 21:25:50,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:50,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash 999150078, now seen corresponding path program 1 times [2024-08-13 21:25:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478196223] [2024-08-13 21:25:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:50,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:25:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:25:50,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:25:50,510 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:25:50,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:25:50,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:25:50,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-08-13 21:25:50,511 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:25:50,511 WARN L234 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:25:50,511 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2024-08-13 21:25:50,560 INFO L144 ThreadInstanceAdder]: Constructed 26 joinOtherThreadTransitions. [2024-08-13 21:25:50,563 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:50,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:25:50,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:25:50,565 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) [2024-08-13 21:25:50,568 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 [2024-08-13 21:25:50,570 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:25:50,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:25:50,570 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:25:50,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:25:52,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:52,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1551601377, now seen corresponding path program 1 times [2024-08-13 21:25:52,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:52,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417984283] [2024-08-13 21:25:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-08-13 21:25:52,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:52,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417984283] [2024-08-13 21:25:52,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417984283] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:52,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:52,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:25:52,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699110132] [2024-08-13 21:25:52,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:52,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:25:52,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:52,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:25:52,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:25:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:52,239 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:52,240 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) [2024-08-13 21:25:52,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-08-13 21:25:56,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:56,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash 11842008, now seen corresponding path program 1 times [2024-08-13 21:25:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433877241] [2024-08-13 21:25:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-08-13 21:25:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433877241] [2024-08-13 21:25:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433877241] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:56,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:56,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691884466] [2024-08-13 21:25:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:56,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:25:56,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:25:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:25:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:56,998 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:56,998 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) [2024-08-13 21:25:56,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:56,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:57,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-08-13 21:25:57,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:25:57,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:25:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1723726064, now seen corresponding path program 2 times [2024-08-13 21:25:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:25:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038528112] [2024-08-13 21:25:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:25:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:25:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:25:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2024-08-13 21:25:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:25:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038528112] [2024-08-13 21:25:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038528112] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:25:58,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:25:58,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:25:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490253495] [2024-08-13 21:25:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:25:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:25:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:25:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:25:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:25:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:58,124 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:25:58,124 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) [2024-08-13 21:25:58,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:25:58,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:25:58,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:26:00,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-08-13 21:26:00,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:00,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1137099802, now seen corresponding path program 1 times [2024-08-13 21:26:00,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:00,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095059857] [2024-08-13 21:26:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:00,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:00,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:26:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:00,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:26:00,205 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:26:00,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:26:00,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:26:00,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-08-13 21:26:00,207 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:26:00,207 WARN L234 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:26:00,207 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2024-08-13 21:26:00,260 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2024-08-13 21:26:00,267 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:00,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:26:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:26:00,271 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) [2024-08-13 21:26:00,272 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 [2024-08-13 21:26:00,277 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:26:00,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:26:00,278 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:00,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:26:02,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:02,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 385328582, now seen corresponding path program 1 times [2024-08-13 21:26:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:02,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008555548] [2024-08-13 21:26:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:02,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-08-13 21:26:02,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:02,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008555548] [2024-08-13 21:26:02,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008555548] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:02,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:02,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:26:02,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226024329] [2024-08-13 21:26:02,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:26:02,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:26:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:26:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:02,288 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:02,288 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) [2024-08-13 21:26:02,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:07,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-08-13 21:26:07,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:07,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 264146154, now seen corresponding path program 1 times [2024-08-13 21:26:07,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:07,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292871570] [2024-08-13 21:26:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:07,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-08-13 21:26:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292871570] [2024-08-13 21:26:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292871570] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465527828] [2024-08-13 21:26:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:26:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:26:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:26:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:07,365 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:07,365 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) [2024-08-13 21:26:07,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:07,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:08,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-08-13 21:26:08,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1636594638, now seen corresponding path program 2 times [2024-08-13 21:26:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525396616] [2024-08-13 21:26:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2024-08-13 21:26:08,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:08,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525396616] [2024-08-13 21:26:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525396616] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:08,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989734905] [2024-08-13 21:26:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:26:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:26:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:26:08,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:08,705 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:08,705 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) [2024-08-13 21:26:08,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:08,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:08,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:26:10,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-08-13 21:26:10,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:10,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:10,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1390337750, now seen corresponding path program 1 times [2024-08-13 21:26:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593953460] [2024-08-13 21:26:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:10,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:10,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:26:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:10,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:26:10,765 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:26:10,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:26:10,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:26:10,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-08-13 21:26:10,766 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:26:10,766 WARN L234 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:26:10,766 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2024-08-13 21:26:10,822 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2024-08-13 21:26:10,826 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:10,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:26:10,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:26:10,828 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) [2024-08-13 21:26:10,833 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 [2024-08-13 21:26:10,834 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:26:10,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:26:10,835 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:10,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:26:12,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:12,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1761732213, now seen corresponding path program 1 times [2024-08-13 21:26:12,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:12,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478830027] [2024-08-13 21:26:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-08-13 21:26:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478830027] [2024-08-13 21:26:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478830027] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:26:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727828361] [2024-08-13 21:26:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:12,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:26:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:26:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:26:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:12,813 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:12,813 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) [2024-08-13 21:26:12,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:18,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-08-13 21:26:18,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:18,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:18,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1477547345, now seen corresponding path program 1 times [2024-08-13 21:26:18,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:18,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174959333] [2024-08-13 21:26:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:18,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2024-08-13 21:26:18,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:18,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174959333] [2024-08-13 21:26:18,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174959333] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:18,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177617275] [2024-08-13 21:26:18,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:18,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:26:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:26:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:26:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:18,481 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:18,481 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) [2024-08-13 21:26:18,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:18,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:19,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-08-13 21:26:19,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:19,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash 759847075, now seen corresponding path program 2 times [2024-08-13 21:26:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205646772] [2024-08-13 21:26:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2024-08-13 21:26:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205646772] [2024-08-13 21:26:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205646772] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:19,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993082172] [2024-08-13 21:26:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:19,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:26:19,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:26:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:26:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:19,772 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:19,773 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) [2024-08-13 21:26:19,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:19,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:19,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:26:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-08-13 21:26:21,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:21,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1579804412, now seen corresponding path program 1 times [2024-08-13 21:26:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992272274] [2024-08-13 21:26:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:21,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:26:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:21,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:26:21,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:26:21,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:26:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:26:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-08-13 21:26:21,952 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:26:21,952 WARN L234 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:26:21,952 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2024-08-13 21:26:22,011 INFO L144 ThreadInstanceAdder]: Constructed 29 joinOtherThreadTransitions. [2024-08-13 21:26:22,014 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:22,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:26:22,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:26:22,016 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) [2024-08-13 21:26:22,018 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 [2024-08-13 21:26:22,022 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:26:22,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:26:22,022 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:22,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:26:23,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:23,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:23,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1856722255, now seen corresponding path program 1 times [2024-08-13 21:26:23,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:23,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168539643] [2024-08-13 21:26:23,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:23,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-08-13 21:26:24,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:24,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168539643] [2024-08-13 21:26:24,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168539643] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:24,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:24,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:26:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284666698] [2024-08-13 21:26:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:26:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:26:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:26:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:24,155 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:24,155 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) [2024-08-13 21:26:24,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-08-13 21:26:29,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:29,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1487864945, now seen corresponding path program 1 times [2024-08-13 21:26:29,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:29,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080984629] [2024-08-13 21:26:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-08-13 21:26:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080984629] [2024-08-13 21:26:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080984629] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:29,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:29,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990312797] [2024-08-13 21:26:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:26:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:29,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:26:29,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:26:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:29,936 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:29,936 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) [2024-08-13 21:26:29,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:29,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:30,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-08-13 21:26:30,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:30,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 307165791, now seen corresponding path program 2 times [2024-08-13 21:26:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84504614] [2024-08-13 21:26:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-08-13 21:26:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84504614] [2024-08-13 21:26:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84504614] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:31,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:31,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146019274] [2024-08-13 21:26:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:31,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-13 21:26:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-13 21:26:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-13 21:26:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:31,334 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:31,334 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) [2024-08-13 21:26:31,335 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:31,335 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:31,335 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-13 21:26:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-08-13 21:26:33,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:33,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1951636176, now seen corresponding path program 1 times [2024-08-13 21:26:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324436956] [2024-08-13 21:26:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:33,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-13 21:26:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-13 21:26:33,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-13 21:26:33,606 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-13 21:26:33,606 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-13 21:26:33,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-13 21:26:33,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-08-13 21:26:33,608 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-13 21:26:33,608 WARN L234 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-13 21:26:33,608 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2024-08-13 21:26:33,664 INFO L144 ThreadInstanceAdder]: Constructed 30 joinOtherThreadTransitions. [2024-08-13 21:26:33,667 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:33,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-13 21:26:33,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-13 21:26:33,677 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) [2024-08-13 21:26:33,678 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 [2024-08-13 21:26:33,680 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-13 21:26:33,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-13 21:26:33,681 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=false, 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;@1f1b99bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-13 21:26:33,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-13 21:26:36,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:36,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash -631267119, now seen corresponding path program 1 times [2024-08-13 21:26:36,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936300449] [2024-08-13 21:26:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-08-13 21:26:36,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:36,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936300449] [2024-08-13 21:26:36,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936300449] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:36,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:36,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-13 21:26:36,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452598528] [2024-08-13 21:26:36,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:36,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-13 21:26:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:36,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-13 21:26:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-13 21:26:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:36,191 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:36,192 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) [2024-08-13 21:26:36,192 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:42,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-08-13 21:26:42,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:42,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:42,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1875244225, now seen corresponding path program 1 times [2024-08-13 21:26:42,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:42,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245428457] [2024-08-13 21:26:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-13 21:26:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-13 21:26:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2024-08-13 21:26:42,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-13 21:26:42,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245428457] [2024-08-13 21:26:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245428457] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-13 21:26:42,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-13 21:26:42,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-13 21:26:42,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850595738] [2024-08-13 21:26:42,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-13 21:26:42,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-13 21:26:42,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-13 21:26:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-13 21:26:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-13 21:26:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:42,952 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-13 21:26:42,952 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) [2024-08-13 21:26:42,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:42,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-13 21:26:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-13 21:26:44,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-08-13 21:26:44,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-13 21:26:44,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-13 21:26:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 692908203, now seen corresponding path program 2 times [2024-08-13 21:26:44,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-13 21:26:44,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369986354] [2024-08-13 21:26:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-13 21:26:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms