./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i --full-output --validate ./goblint.2024-08-08_07-59-58.files/protection-local/28-race_reach_01-simple_racing.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_01-simple_racing.i ./goblint.2024-08-08_07-59-58.files/protection-local/28-race_reach_01-simple_racing.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 [2024-08-14 09:13:45,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 09:13:45,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-14 09:13:45,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 09:13:45,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 09:13:45,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 09:13:45,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 09:13:45,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 09:13:45,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 09:13:45,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 09:13:45,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 09:13:45,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 09:13:45,461 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 09:13:45,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 09:13:45,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 09:13:45,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 09:13:45,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 09:13:45,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 09:13:45,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 09:13:45,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 09:13:45,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 09:13:45,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 09:13:45,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 09:13:45,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 09:13:45,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 09:13:45,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 09:13:45,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 09:13:45,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 09:13:45,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 09:13:45,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 09:13:45,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-14 09:13:45,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 09:13:45,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 09:13:45,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 09:13:45,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 09:13:45,467 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-14 09:13:45,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 09:13:45,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 09:13:45,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-14 09:13:45,468 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 09:13:45,468 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-14 09:13:45,469 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-14 09:13:45,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2024-08-14 09:13:45,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 09:13:45,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 09:13:45,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 09:13:45,683 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 09:13:45,684 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 09:13:45,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2024-08-14 09:13:46,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 09:13:47,157 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 09:13:47,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2024-08-14 09:13:47,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/769fe4305/3abfc371b11a4e1bb4d73fc7ce49913c/FLAG38a3d9793 [2024-08-14 09:13:47,183 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/769fe4305/3abfc371b11a4e1bb4d73fc7ce49913c [2024-08-14 09:13:47,185 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 09:13:47,186 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 09:13:47,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/protection-local/28-race_reach_01-simple_racing.yml/witness.yml [2024-08-14 09:13:47,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 09:13:47,245 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-14 09:13:47,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 09:13:47,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 09:13:47,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 09:13:47,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 09:13:47" (1/2) ... [2024-08-14 09:13:47,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8366cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 09:13:47, skipping insertion in model container [2024-08-14 09:13:47,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 09:13:47" (1/2) ... [2024-08-14 09:13:47,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e218e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 09:13:47, skipping insertion in model container [2024-08-14 09:13:47,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 09:13:47" (2/2) ... [2024-08-14 09:13:47,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8366cc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47, skipping insertion in model container [2024-08-14 09:13:47,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 09:13:47" (2/2) ... [2024-08-14 09:13:47,254 INFO L81 nessWitnessExtractor]: Only extracting loop invariants from correctness witness [2024-08-14 09:13:47,257 INFO L92 edCorrectnessWitness]: Witness did not contain any usable entries. [2024-08-14 09:13:47,291 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-14 09:13:47,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2024-08-14 09:13:47,644 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 09:13:47,654 INFO L202 MainTranslator]: Completed pre-run [2024-08-14 09:13:47,686 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2024-08-14 09:13:47,699 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 09:13:47,742 INFO L206 MainTranslator]: Completed translation [2024-08-14 09:13:47,744 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47 WrapperNode [2024-08-14 09:13:47,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 09:13:47,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-14 09:13:47,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-14 09:13:47,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-14 09:13:47,751 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 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,763 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 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,779 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-08-14 09:13:47,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-14 09:13:47,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 09:13:47,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 09:13:47,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 09:13:47,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 09:13:47,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-14 09:13:47,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-14 09:13:47,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-14 09:13:47,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (1/1) ... [2024-08-14 09:13:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-14 09:13:47,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:47,856 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) [2024-08-14 09:13:47,859 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 [2024-08-14 09:13:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-14 09:13:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-14 09:13:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-08-14 09:13:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 09:13:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-08-14 09:13:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-08-14 09:13:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-08-14 09:13:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 09:13:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-14 09:13:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-08-14 09:13:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 09:13:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 09:13:47,892 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-08-14 09:13:48,005 INFO L244 CfgBuilder]: Building ICFG [2024-08-14 09:13:48,006 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 09:13:48,186 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-08-14 09:13:48,187 INFO L293 CfgBuilder]: Performing block encoding [2024-08-14 09:13:48,328 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 09:13:48,328 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-08-14 09:13:48,329 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 09:13:48 BoogieIcfgContainer [2024-08-14 09:13:48,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-14 09:13:48,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 09:13:48,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 09:13:48,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 09:13:48,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 09:13:47" (1/4) ... [2024-08-14 09:13:48,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d04d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 09:13:48, skipping insertion in model container [2024-08-14 09:13:48,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 09:13:47" (2/4) ... [2024-08-14 09:13:48,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d04d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.08 09:13:48, skipping insertion in model container [2024-08-14 09:13:48,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 09:13:47" (3/4) ... [2024-08-14 09:13:48,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d04d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.08 09:13:48, skipping insertion in model container [2024-08-14 09:13:48,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 09:13:48" (4/4) ... [2024-08-14 09:13:48,342 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2024-08-14 09:13:48,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 09:13:48,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 09:13:48,361 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-14 09:13:48,395 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-08-14 09:13:48,439 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:48,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:48,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:48,446 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) [2024-08-14 09:13:48,447 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 [2024-08-14 09:13:48,485 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:48,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:48,515 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:48,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:48,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:48,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash 827267552, now seen corresponding path program 1 times [2024-08-14 09:13:48,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:48,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227659677] [2024-08-14 09:13:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 09:13:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:48,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227659677] [2024-08-14 09:13:48,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227659677] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:48,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:48,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724303651] [2024-08-14 09:13:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:48,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:48,860 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:48,862 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) [2024-08-14 09:13:48,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:48,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 09:13:48,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:48,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash 550581246, now seen corresponding path program 1 times [2024-08-14 09:13:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014798695] [2024-08-14 09:13:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:48,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:48,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:49,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:49,006 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:49,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:49,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:49,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-14 09:13:49,014 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-14 09:13:49,016 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:49,016 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-08-14 09:13:49,035 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-08-14 09:13:49,039 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:49,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:49,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:49,061 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) [2024-08-14 09:13:49,069 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 [2024-08-14 09:13:49,072 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:49,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:49,074 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:49,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:49,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:49,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash 334895274, now seen corresponding path program 1 times [2024-08-14 09:13:49,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:49,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070755532] [2024-08-14 09:13:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 09:13:49,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:49,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070755532] [2024-08-14 09:13:49,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070755532] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:49,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:49,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587453170] [2024-08-14 09:13:49,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:49,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:49,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,203 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:49,203 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) [2024-08-14 09:13:49,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-08-14 09:13:49,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash 103946751, now seen corresponding path program 1 times [2024-08-14 09:13:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959115320] [2024-08-14 09:13:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 09:13:49,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959115320] [2024-08-14 09:13:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959115320] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:49,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:49,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103375496] [2024-08-14 09:13:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:49,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:49,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:49,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,428 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:49,428 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) [2024-08-14 09:13:49,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-08-14 09:13:49,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:49,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1624501756, now seen corresponding path program 1 times [2024-08-14 09:13:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124897634] [2024-08-14 09:13:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-14 09:13:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124897634] [2024-08-14 09:13:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124897634] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-14 09:13:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670305920] [2024-08-14 09:13:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:49,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-14 09:13:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-14 09:13:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-08-14 09:13:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,773 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:49,773 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) [2024-08-14 09:13:49,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:49,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-08-14 09:13:49,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:49,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1512302075, now seen corresponding path program 1 times [2024-08-14 09:13:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715995881] [2024-08-14 09:13:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:49,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:49,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:49,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:49,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:49,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:49,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-08-14 09:13:49,831 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:49,831 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:49,831 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-08-14 09:13:49,845 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-08-14 09:13:49,848 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:49,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:49,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:49,852 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) [2024-08-14 09:13:49,856 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 [2024-08-14 09:13:49,858 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:49,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:49,859 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:49,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:49,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:49,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash 307488905, now seen corresponding path program 1 times [2024-08-14 09:13:49,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:49,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656394434] [2024-08-14 09:13:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-08-14 09:13:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656394434] [2024-08-14 09:13:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656394434] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223825167] [2024-08-14 09:13:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:49,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:49,979 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:49,979 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) [2024-08-14 09:13:49,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-08-14 09:13:50,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:50,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2114379075, now seen corresponding path program 1 times [2024-08-14 09:13:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:50,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117456664] [2024-08-14 09:13:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 09:13:50,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:50,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117456664] [2024-08-14 09:13:50,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117456664] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:50,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:50,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032218660] [2024-08-14 09:13:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,302 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:50,303 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) [2024-08-14 09:13:50,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-08-14 09:13:50,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:50,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1088564743, now seen corresponding path program 1 times [2024-08-14 09:13:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:50,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551435547] [2024-08-14 09:13:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 09:13:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551435547] [2024-08-14 09:13:50,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551435547] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:50,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:50,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369946595] [2024-08-14 09:13:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:50,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,572 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:50,573 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) [2024-08-14 09:13:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-08-14 09:13:50,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:50,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2071151197, now seen corresponding path program 1 times [2024-08-14 09:13:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253208412] [2024-08-14 09:13:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:50,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:50,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:50,678 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:50,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:50,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:50,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-08-14 09:13:50,680 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:50,681 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:50,681 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-08-14 09:13:50,721 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-08-14 09:13:50,723 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:50,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:50,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:50,731 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) [2024-08-14 09:13:50,732 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 [2024-08-14 09:13:50,735 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:50,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:50,739 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:50,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:50,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:50,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -509000272, now seen corresponding path program 1 times [2024-08-14 09:13:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760066413] [2024-08-14 09:13:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-08-14 09:13:50,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760066413] [2024-08-14 09:13:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760066413] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:50,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:50,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906668374] [2024-08-14 09:13:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:50,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:50,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:50,966 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:50,966 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) [2024-08-14 09:13:50,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-08-14 09:13:51,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:51,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1715545970, now seen corresponding path program 1 times [2024-08-14 09:13:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:51,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946141787] [2024-08-14 09:13:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:51,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-08-14 09:13:51,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946141787] [2024-08-14 09:13:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946141787] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:51,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:51,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:51,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187334848] [2024-08-14 09:13:51,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:51,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,362 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:51,363 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) [2024-08-14 09:13:51,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-08-14 09:13:51,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:51,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1522438833, now seen corresponding path program 1 times [2024-08-14 09:13:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179673274] [2024-08-14 09:13:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 09:13:51,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:51,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179673274] [2024-08-14 09:13:51,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179673274] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:51,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:51,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:51,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789538314] [2024-08-14 09:13:51,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:51,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:51,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,669 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:51,669 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) [2024-08-14 09:13:51,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:51,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:51,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-08-14 09:13:51,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:51,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1606880661, now seen corresponding path program 1 times [2024-08-14 09:13:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:51,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316964220] [2024-08-14 09:13:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:51,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:51,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:51,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:51,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:51,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-08-14 09:13:51,760 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:51,760 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:51,760 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-08-14 09:13:51,778 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-08-14 09:13:51,779 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:51,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:51,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:51,781 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) [2024-08-14 09:13:51,782 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 [2024-08-14 09:13:51,792 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:51,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:51,793 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:51,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:51,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:51,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1423158086, now seen corresponding path program 1 times [2024-08-14 09:13:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:51,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749400919] [2024-08-14 09:13:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:51,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-08-14 09:13:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749400919] [2024-08-14 09:13:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749400919] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211347463] [2024-08-14 09:13:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:51,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:51,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:51,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:51,954 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:51,954 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) [2024-08-14 09:13:51,955 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-08-14 09:13:52,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:52,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1893586578, now seen corresponding path program 1 times [2024-08-14 09:13:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:52,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386834682] [2024-08-14 09:13:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-08-14 09:13:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386834682] [2024-08-14 09:13:52,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386834682] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:52,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:52,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084519977] [2024-08-14 09:13:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:52,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,405 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:52,405 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) [2024-08-14 09:13:52,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:52,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-08-14 09:13:52,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:52,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash 936158212, now seen corresponding path program 1 times [2024-08-14 09:13:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101432616] [2024-08-14 09:13:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-08-14 09:13:52,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101432616] [2024-08-14 09:13:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101432616] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:52,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737389547] [2024-08-14 09:13:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:52,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,694 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:52,695 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) [2024-08-14 09:13:52,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:52,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:52,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-08-14 09:13:52,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:52,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:52,786 INFO L85 PathProgramCache]: Analyzing trace with hash 324684599, now seen corresponding path program 1 times [2024-08-14 09:13:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:52,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980891251] [2024-08-14 09:13:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:52,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:52,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:52,822 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:52,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:52,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:52,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-08-14 09:13:52,824 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:52,824 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:52,824 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-08-14 09:13:52,850 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-08-14 09:13:52,853 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:52,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:52,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:52,857 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) [2024-08-14 09:13:52,858 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 [2024-08-14 09:13:52,861 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:52,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:52,861 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:52,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:53,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:53,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1411927726, now seen corresponding path program 1 times [2024-08-14 09:13:53,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:53,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597048949] [2024-08-14 09:13:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-08-14 09:13:53,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:53,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597048949] [2024-08-14 09:13:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597048949] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417171428] [2024-08-14 09:13:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:53,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:53,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:53,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,078 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:53,079 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) [2024-08-14 09:13:53,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-08-14 09:13:53,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:53,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1426017486, now seen corresponding path program 1 times [2024-08-14 09:13:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:53,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402488506] [2024-08-14 09:13:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-08-14 09:13:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402488506] [2024-08-14 09:13:53,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402488506] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:53,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:53,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664353484] [2024-08-14 09:13:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,607 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:53,607 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) [2024-08-14 09:13:53,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-08-14 09:13:53,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:53,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash -621532253, now seen corresponding path program 1 times [2024-08-14 09:13:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:53,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599750102] [2024-08-14 09:13:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:53,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-08-14 09:13:53,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599750102] [2024-08-14 09:13:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599750102] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:53,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:53,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607709018] [2024-08-14 09:13:53,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,962 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:53,963 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) [2024-08-14 09:13:53,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:53,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:53,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:54,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-08-14 09:13:54,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:54,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 673119660, now seen corresponding path program 1 times [2024-08-14 09:13:54,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:54,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319844405] [2024-08-14 09:13:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:54,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:54,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:54,210 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:54,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:54,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:54,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-08-14 09:13:54,212 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:54,212 WARN L234 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:54,212 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-08-14 09:13:54,243 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2024-08-14 09:13:54,244 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:54,247 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) [2024-08-14 09:13:54,255 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 [2024-08-14 09:13:54,258 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:54,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:54,259 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:54,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:54,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:54,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1203811257, now seen corresponding path program 1 times [2024-08-14 09:13:54,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:54,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428171359] [2024-08-14 09:13:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:54,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-08-14 09:13:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428171359] [2024-08-14 09:13:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428171359] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:54,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920459584] [2024-08-14 09:13:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:54,515 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:54,515 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) [2024-08-14 09:13:54,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-08-14 09:13:54,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:54,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash -82926653, now seen corresponding path program 1 times [2024-08-14 09:13:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:54,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731599745] [2024-08-14 09:13:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-08-14 09:13:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731599745] [2024-08-14 09:13:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731599745] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:55,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:55,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:55,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593004661] [2024-08-14 09:13:55,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:55,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:55,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,072 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:55,072 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) [2024-08-14 09:13:55,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:55,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-08-14 09:13:55,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:55,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash -132184043, now seen corresponding path program 1 times [2024-08-14 09:13:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500080899] [2024-08-14 09:13:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-08-14 09:13:55,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500080899] [2024-08-14 09:13:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500080899] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:55,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:55,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:55,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056470558] [2024-08-14 09:13:55,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:55,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,439 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:55,439 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) [2024-08-14 09:13:55,439 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,439 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:55,439 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:55,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-08-14 09:13:55,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:55,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash -931868976, now seen corresponding path program 1 times [2024-08-14 09:13:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:55,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783270003] [2024-08-14 09:13:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:55,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:55,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:55,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:55,604 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:55,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:55,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:55,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-08-14 09:13:55,606 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:55,606 WARN L234 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:55,606 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-08-14 09:13:55,624 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-08-14 09:13:55,626 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:55,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:55,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:55,627 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) [2024-08-14 09:13:55,629 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 [2024-08-14 09:13:55,631 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:55,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:55,631 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:55,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:56,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:56,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash -650346004, now seen corresponding path program 1 times [2024-08-14 09:13:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583348749] [2024-08-14 09:13:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-08-14 09:13:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583348749] [2024-08-14 09:13:56,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583348749] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:56,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:56,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709188774] [2024-08-14 09:13:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:56,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:56,152 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:56,152 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) [2024-08-14 09:13:56,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-08-14 09:13:57,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:57,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash 202328148, now seen corresponding path program 1 times [2024-08-14 09:13:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:57,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833302431] [2024-08-14 09:13:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-08-14 09:13:57,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:57,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833302431] [2024-08-14 09:13:57,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833302431] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:57,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:57,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:57,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528741009] [2024-08-14 09:13:57,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:57,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:57,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,129 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:57,129 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) [2024-08-14 09:13:57,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:57,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-08-14 09:13:57,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:57,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 513100616, now seen corresponding path program 1 times [2024-08-14 09:13:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:57,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871587773] [2024-08-14 09:13:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-08-14 09:13:57,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:57,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871587773] [2024-08-14 09:13:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871587773] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:57,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:57,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:57,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821269316] [2024-08-14 09:13:57,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:57,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:57,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,579 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:57,579 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) [2024-08-14 09:13:57,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:57,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:57,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-08-14 09:13:57,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:57,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash -682133538, now seen corresponding path program 1 times [2024-08-14 09:13:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:57,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288127720] [2024-08-14 09:13:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:57,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:57,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:57,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:57,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:57,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:57,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:57,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-08-14 09:13:57,760 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:57,761 WARN L234 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:57,761 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2024-08-14 09:13:57,782 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-08-14 09:13:57,785 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:57,788 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) [2024-08-14 09:13:57,792 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 [2024-08-14 09:13:57,794 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:57,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:57,795 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:57,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:13:58,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:58,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 339370176, now seen corresponding path program 1 times [2024-08-14 09:13:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131265789] [2024-08-14 09:13:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-08-14 09:13:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131265789] [2024-08-14 09:13:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131265789] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:58,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:58,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:13:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903100229] [2024-08-14 09:13:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:13:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:13:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:13:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:58,097 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:58,097 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) [2024-08-14 09:13:58,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-08-14 09:13:58,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:58,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -460246704, now seen corresponding path program 1 times [2024-08-14 09:13:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279673986] [2024-08-14 09:13:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-08-14 09:13:58,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279673986] [2024-08-14 09:13:58,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279673986] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:58,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:58,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:58,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296710846] [2024-08-14 09:13:58,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:58,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:13:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:13:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:13:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:58,972 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:58,972 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) [2024-08-14 09:13:58,973 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:58,973 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:59,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-08-14 09:13:59,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:59,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1905204022, now seen corresponding path program 1 times [2024-08-14 09:13:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573235984] [2024-08-14 09:13:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:13:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-08-14 09:13:59,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:13:59,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573235984] [2024-08-14 09:13:59,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573235984] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:13:59,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:13:59,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:13:59,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807119819] [2024-08-14 09:13:59,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:13:59,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:13:59,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:13:59,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:13:59,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:13:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:59,503 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:13:59,503 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) [2024-08-14 09:13:59,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:59,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:59,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:13:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:13:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:13:59,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-08-14 09:13:59,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:13:59,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:13:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1823067676, now seen corresponding path program 1 times [2024-08-14 09:13:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:13:59,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763421701] [2024-08-14 09:13:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:13:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:13:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:59,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:13:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:13:59,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:13:59,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:13:59,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:13:59,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:13:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-08-14 09:13:59,761 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:13:59,762 WARN L234 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:13:59,762 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2024-08-14 09:13:59,786 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-08-14 09:13:59,788 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:59,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:13:59,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:13:59,790 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) [2024-08-14 09:13:59,794 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 [2024-08-14 09:13:59,796 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:13:59,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:13:59,796 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:13:59,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:00,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:00,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1666332634, now seen corresponding path program 1 times [2024-08-14 09:14:00,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:00,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326227624] [2024-08-14 09:14:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-08-14 09:14:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326227624] [2024-08-14 09:14:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326227624] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:00,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564960389] [2024-08-14 09:14:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:00,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:00,138 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:00,138 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) [2024-08-14 09:14:00,139 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-08-14 09:14:01,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:01,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash 309261292, now seen corresponding path program 1 times [2024-08-14 09:14:01,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:01,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040728928] [2024-08-14 09:14:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-08-14 09:14:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:01,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040728928] [2024-08-14 09:14:01,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040728928] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:01,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:01,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:01,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183773794] [2024-08-14 09:14:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:01,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:01,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:01,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,378 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:01,378 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) [2024-08-14 09:14:01,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:01,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-08-14 09:14:01,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:01,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:01,703 INFO L85 PathProgramCache]: Analyzing trace with hash 80909369, now seen corresponding path program 1 times [2024-08-14 09:14:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:01,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066286857] [2024-08-14 09:14:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-08-14 09:14:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066286857] [2024-08-14 09:14:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066286857] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475197593] [2024-08-14 09:14:01,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:01,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:01,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:01,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,980 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:01,981 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) [2024-08-14 09:14:01,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:01,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:01,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-08-14 09:14:02,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:02,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash -798268924, now seen corresponding path program 1 times [2024-08-14 09:14:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352969385] [2024-08-14 09:14:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:02,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:02,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:02,305 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:02,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:02,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-08-14 09:14:02,307 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:14:02,307 WARN L234 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:02,307 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2024-08-14 09:14:02,331 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2024-08-14 09:14:02,333 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:02,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:02,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:02,336 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) [2024-08-14 09:14:02,348 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 [2024-08-14 09:14:02,350 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:02,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:02,351 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:02,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:02,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:02,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash 298844149, now seen corresponding path program 1 times [2024-08-14 09:14:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864430363] [2024-08-14 09:14:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-08-14 09:14:02,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864430363] [2024-08-14 09:14:02,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864430363] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:02,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:02,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:02,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831405847] [2024-08-14 09:14:02,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:02,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:02,762 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:02,762 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) [2024-08-14 09:14:02,762 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:03,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-08-14 09:14:03,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:03,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 222769458, now seen corresponding path program 1 times [2024-08-14 09:14:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959673495] [2024-08-14 09:14:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-08-14 09:14:04,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959673495] [2024-08-14 09:14:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959673495] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:04,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:04,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:04,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48578441] [2024-08-14 09:14:04,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:04,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:04,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:04,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:04,072 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:04,072 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) [2024-08-14 09:14:04,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:04,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:04,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:04,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-08-14 09:14:04,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:04,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 932748668, now seen corresponding path program 1 times [2024-08-14 09:14:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:04,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836218838] [2024-08-14 09:14:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-08-14 09:14:04,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:04,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836218838] [2024-08-14 09:14:04,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836218838] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:04,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:04,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:04,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372692225] [2024-08-14 09:14:04,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:04,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:04,801 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:04,801 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) [2024-08-14 09:14:04,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:04,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:04,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-08-14 09:14:05,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:05,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash -587040796, now seen corresponding path program 1 times [2024-08-14 09:14:05,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638204772] [2024-08-14 09:14:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:05,123 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:05,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:05,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:05,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:05,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:05,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-08-14 09:14:05,157 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:14:05,157 WARN L234 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:05,157 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2024-08-14 09:14:05,198 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-08-14 09:14:05,201 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:05,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:05,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:05,203 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) [2024-08-14 09:14:05,205 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 [2024-08-14 09:14:05,208 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:05,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:05,209 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:05,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:05,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:05,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 305488288, now seen corresponding path program 1 times [2024-08-14 09:14:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801528670] [2024-08-14 09:14:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-08-14 09:14:05,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:05,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801528670] [2024-08-14 09:14:05,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801528670] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:05,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:05,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:05,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928440576] [2024-08-14 09:14:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:05,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:05,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:05,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:05,708 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:05,708 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) [2024-08-14 09:14:05,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-08-14 09:14:06,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:06,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash 934702232, now seen corresponding path program 1 times [2024-08-14 09:14:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295782339] [2024-08-14 09:14:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-08-14 09:14:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295782339] [2024-08-14 09:14:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295782339] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:07,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:07,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163754385] [2024-08-14 09:14:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:07,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:07,020 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:07,020 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) [2024-08-14 09:14:07,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:07,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:07,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-08-14 09:14:07,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:07,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1542670264, now seen corresponding path program 1 times [2024-08-14 09:14:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954803961] [2024-08-14 09:14:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-08-14 09:14:07,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954803961] [2024-08-14 09:14:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954803961] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:07,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369674352] [2024-08-14 09:14:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:07,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:07,676 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:07,676 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) [2024-08-14 09:14:07,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:07,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:07,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-08-14 09:14:08,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:08,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:08,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1444092011, now seen corresponding path program 1 times [2024-08-14 09:14:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373067925] [2024-08-14 09:14:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:08,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:08,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:08,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:08,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:08,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-08-14 09:14:08,128 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:14:08,128 WARN L234 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:08,128 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2024-08-14 09:14:08,162 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2024-08-14 09:14:08,169 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:08,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:08,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:08,174 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) [2024-08-14 09:14:08,177 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 [2024-08-14 09:14:08,179 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:08,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:08,180 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:08,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:08,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:08,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -735976806, now seen corresponding path program 1 times [2024-08-14 09:14:08,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:08,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481357122] [2024-08-14 09:14:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-08-14 09:14:08,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:08,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481357122] [2024-08-14 09:14:08,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481357122] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:08,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:08,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:08,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989050059] [2024-08-14 09:14:08,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:08,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:08,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:08,788 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:08,788 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) [2024-08-14 09:14:08,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-08-14 09:14:10,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:10,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1642964025, now seen corresponding path program 1 times [2024-08-14 09:14:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440062781] [2024-08-14 09:14:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-08-14 09:14:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440062781] [2024-08-14 09:14:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440062781] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:10,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:10,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724979907] [2024-08-14 09:14:10,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:10,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:10,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:10,504 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:10,505 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) [2024-08-14 09:14:10,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:10,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:10,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-08-14 09:14:10,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:10,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1810359238, now seen corresponding path program 1 times [2024-08-14 09:14:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766672507] [2024-08-14 09:14:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-08-14 09:14:11,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766672507] [2024-08-14 09:14:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766672507] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:11,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:11,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326964361] [2024-08-14 09:14:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:11,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:11,194 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:11,194 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) [2024-08-14 09:14:11,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:11,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:11,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:11,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-08-14 09:14:11,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:11,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 962664203, now seen corresponding path program 1 times [2024-08-14 09:14:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:11,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662298837] [2024-08-14 09:14:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:11,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:11,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:11,716 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:11,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:11,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:11,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-08-14 09:14:11,717 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:14:11,717 WARN L234 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:11,717 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2024-08-14 09:14:11,747 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2024-08-14 09:14:11,749 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:11,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:11,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:11,753 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) [2024-08-14 09:14:11,755 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 [2024-08-14 09:14:11,757 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:11,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:11,757 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:11,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:12,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:12,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash 560901974, now seen corresponding path program 1 times [2024-08-14 09:14:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073142194] [2024-08-14 09:14:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-08-14 09:14:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073142194] [2024-08-14 09:14:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073142194] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:12,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:12,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51799534] [2024-08-14 09:14:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:12,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:12,307 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:12,307 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) [2024-08-14 09:14:12,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:13,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-08-14 09:14:13,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:13,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1209168684, now seen corresponding path program 1 times [2024-08-14 09:14:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:13,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751213029] [2024-08-14 09:14:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:13,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-08-14 09:14:13,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:13,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751213029] [2024-08-14 09:14:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751213029] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:13,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079181474] [2024-08-14 09:14:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:13,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:13,999 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:13,999 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) [2024-08-14 09:14:13,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:13,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:14,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-08-14 09:14:14,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:14,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1920990826, now seen corresponding path program 1 times [2024-08-14 09:14:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901368068] [2024-08-14 09:14:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-08-14 09:14:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:14,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901368068] [2024-08-14 09:14:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901368068] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857684392] [2024-08-14 09:14:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:14,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:14,729 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:14,730 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) [2024-08-14 09:14:14,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:14,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:14,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:15,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-08-14 09:14:15,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:15,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1864079643, now seen corresponding path program 1 times [2024-08-14 09:14:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562079893] [2024-08-14 09:14:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:15,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:15,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:15,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:15,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:15,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:15,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-08-14 09:14:15,234 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-14 09:14:15,235 WARN L234 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:15,235 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2024-08-14 09:14:15,264 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2024-08-14 09:14:15,381 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:15,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:15,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:15,390 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) [2024-08-14 09:14:15,392 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 [2024-08-14 09:14:15,396 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:15,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:15,396 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:15,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:16,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:16,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1528365213, now seen corresponding path program 1 times [2024-08-14 09:14:16,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411412692] [2024-08-14 09:14:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-08-14 09:14:16,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411412692] [2024-08-14 09:14:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411412692] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:16,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905177129] [2024-08-14 09:14:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:16,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:16,047 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:16,047 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) [2024-08-14 09:14:16,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:17,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-08-14 09:14:17,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:17,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash -948392695, now seen corresponding path program 1 times [2024-08-14 09:14:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52288498] [2024-08-14 09:14:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:17,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-08-14 09:14:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52288498] [2024-08-14 09:14:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52288498] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:18,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:18,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:18,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443776975] [2024-08-14 09:14:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:18,110 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:18,110 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) [2024-08-14 09:14:18,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:18,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-08-14 09:14:18,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1032447633, now seen corresponding path program 2 times [2024-08-14 09:14:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916233695] [2024-08-14 09:14:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-08-14 09:14:19,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916233695] [2024-08-14 09:14:19,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916233695] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:19,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902396862] [2024-08-14 09:14:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:19,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:19,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:19,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:19,312 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:19,312 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) [2024-08-14 09:14:19,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:19,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:19,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:20,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-08-14 09:14:20,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:20,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:20,011 INFO L85 PathProgramCache]: Analyzing trace with hash -467571179, now seen corresponding path program 1 times [2024-08-14 09:14:20,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:20,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047489888] [2024-08-14 09:14:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:20,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:20,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:20,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:20,085 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:20,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:20,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:20,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-08-14 09:14:20,087 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:20,087 WARN L234 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:20,087 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2024-08-14 09:14:20,128 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-08-14 09:14:20,131 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:20,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:20,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:20,133 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) [2024-08-14 09:14:20,136 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 [2024-08-14 09:14:20,138 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:20,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:20,139 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:20,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:21,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:21,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2107108220, now seen corresponding path program 1 times [2024-08-14 09:14:21,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:21,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583413207] [2024-08-14 09:14:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-08-14 09:14:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583413207] [2024-08-14 09:14:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583413207] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:21,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:21,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255358381] [2024-08-14 09:14:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:21,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:21,086 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:21,086 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) [2024-08-14 09:14:21,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:22,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-08-14 09:14:22,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:22,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash -862419035, now seen corresponding path program 1 times [2024-08-14 09:14:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:22,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475982468] [2024-08-14 09:14:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-08-14 09:14:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475982468] [2024-08-14 09:14:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475982468] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:23,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:23,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112917924] [2024-08-14 09:14:23,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:23,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:23,115 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:23,115 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) [2024-08-14 09:14:23,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:23,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:23,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-08-14 09:14:23,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:23,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1494822319, now seen corresponding path program 2 times [2024-08-14 09:14:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:23,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748165453] [2024-08-14 09:14:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:23,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-08-14 09:14:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748165453] [2024-08-14 09:14:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748165453] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460796059] [2024-08-14 09:14:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:24,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:24,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:24,041 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:24,041 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) [2024-08-14 09:14:24,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:24,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:24,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:24,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-08-14 09:14:24,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:24,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash 377782306, now seen corresponding path program 1 times [2024-08-14 09:14:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024335690] [2024-08-14 09:14:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:24,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:24,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:24,710 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:24,710 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:24,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:24,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-08-14 09:14:24,711 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:24,712 WARN L234 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:24,712 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2024-08-14 09:14:24,747 INFO L144 ThreadInstanceAdder]: Constructed 17 joinOtherThreadTransitions. [2024-08-14 09:14:24,749 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:24,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:24,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:24,751 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) [2024-08-14 09:14:24,755 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 [2024-08-14 09:14:24,758 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:24,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:24,758 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:24,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:25,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:25,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash 707856540, now seen corresponding path program 1 times [2024-08-14 09:14:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672017619] [2024-08-14 09:14:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-08-14 09:14:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672017619] [2024-08-14 09:14:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672017619] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:25,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:25,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027617663] [2024-08-14 09:14:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:25,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:25,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:25,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:25,636 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:25,636 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) [2024-08-14 09:14:25,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:27,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-08-14 09:14:27,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:27,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:27,876 INFO L85 PathProgramCache]: Analyzing trace with hash 57446358, now seen corresponding path program 1 times [2024-08-14 09:14:27,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:27,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268124409] [2024-08-14 09:14:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-08-14 09:14:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268124409] [2024-08-14 09:14:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268124409] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784365529] [2024-08-14 09:14:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:28,017 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:28,017 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) [2024-08-14 09:14:28,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:28,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:28,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-08-14 09:14:28,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:28,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1357919902, now seen corresponding path program 2 times [2024-08-14 09:14:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:28,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181556032] [2024-08-14 09:14:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:28,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-08-14 09:14:28,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:28,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181556032] [2024-08-14 09:14:28,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181556032] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:28,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198893968] [2024-08-14 09:14:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:28,812 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:28,812 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) [2024-08-14 09:14:28,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:28,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:28,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:29,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-08-14 09:14:29,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:29,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 360439883, now seen corresponding path program 1 times [2024-08-14 09:14:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319153170] [2024-08-14 09:14:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:29,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:29,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:29,848 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:29,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:29,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:29,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-08-14 09:14:29,850 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:29,850 WARN L234 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:29,850 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2024-08-14 09:14:29,899 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-08-14 09:14:29,902 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:29,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:29,904 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) [2024-08-14 09:14:29,906 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 [2024-08-14 09:14:29,910 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:29,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:29,911 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:29,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:30,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:30,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1562720630, now seen corresponding path program 1 times [2024-08-14 09:14:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:30,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121141111] [2024-08-14 09:14:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:30,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-08-14 09:14:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121141111] [2024-08-14 09:14:31,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121141111] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:31,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:31,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:31,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844370019] [2024-08-14 09:14:31,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:31,049 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:31,049 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) [2024-08-14 09:14:31,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:34,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-08-14 09:14:34,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:34,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1903576960, now seen corresponding path program 1 times [2024-08-14 09:14:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939679707] [2024-08-14 09:14:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:34,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-08-14 09:14:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939679707] [2024-08-14 09:14:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939679707] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:34,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410779348] [2024-08-14 09:14:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:34,244 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:34,244 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) [2024-08-14 09:14:34,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:34,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:35,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-08-14 09:14:35,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:35,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2118557662, now seen corresponding path program 2 times [2024-08-14 09:14:35,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:35,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516884602] [2024-08-14 09:14:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-08-14 09:14:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516884602] [2024-08-14 09:14:35,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516884602] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:35,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:35,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:35,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004065282] [2024-08-14 09:14:35,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:35,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:35,316 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:35,316 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) [2024-08-14 09:14:35,316 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:35,316 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:35,316 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:36,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-08-14 09:14:36,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:36,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash 750130098, now seen corresponding path program 1 times [2024-08-14 09:14:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040361975] [2024-08-14 09:14:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:36,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:36,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:36,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:36,230 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:36,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:36,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-08-14 09:14:36,231 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:36,232 WARN L234 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:36,232 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2024-08-14 09:14:36,277 INFO L144 ThreadInstanceAdder]: Constructed 19 joinOtherThreadTransitions. [2024-08-14 09:14:36,280 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:36,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:36,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:36,282 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) [2024-08-14 09:14:36,283 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 [2024-08-14 09:14:36,288 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:36,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:36,289 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:36,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:37,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:37,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash 773850273, now seen corresponding path program 1 times [2024-08-14 09:14:37,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:37,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549746402] [2024-08-14 09:14:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:37,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-08-14 09:14:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549746402] [2024-08-14 09:14:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549746402] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526514928] [2024-08-14 09:14:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:37,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:37,283 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:37,283 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) [2024-08-14 09:14:37,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:40,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-08-14 09:14:40,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:40,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 154463064, now seen corresponding path program 1 times [2024-08-14 09:14:40,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:40,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493350367] [2024-08-14 09:14:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:40,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-08-14 09:14:40,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:40,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493350367] [2024-08-14 09:14:40,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493350367] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:40,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:40,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:40,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312670117] [2024-08-14 09:14:40,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:40,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:40,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:40,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:40,281 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:40,281 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) [2024-08-14 09:14:40,281 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:40,281 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:40,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-08-14 09:14:40,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:40,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash 425146636, now seen corresponding path program 2 times [2024-08-14 09:14:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:40,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727374572] [2024-08-14 09:14:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:40,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-08-14 09:14:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727374572] [2024-08-14 09:14:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727374572] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882443345] [2024-08-14 09:14:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:41,382 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:41,383 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) [2024-08-14 09:14:41,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:41,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:41,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:42,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-08-14 09:14:42,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:42,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1092860327, now seen corresponding path program 1 times [2024-08-14 09:14:42,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:42,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001684618] [2024-08-14 09:14:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:42,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:42,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:42,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:42,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:42,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:42,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:42,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-08-14 09:14:42,356 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:42,356 WARN L234 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:42,356 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2024-08-14 09:14:42,405 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2024-08-14 09:14:42,408 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:42,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:42,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:42,410 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) [2024-08-14 09:14:42,411 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 [2024-08-14 09:14:42,414 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:42,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:42,414 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:42,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:43,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:43,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash 288698548, now seen corresponding path program 1 times [2024-08-14 09:14:43,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:43,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614068906] [2024-08-14 09:14:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:43,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-08-14 09:14:43,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614068906] [2024-08-14 09:14:43,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614068906] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:43,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:43,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876459244] [2024-08-14 09:14:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:43,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:43,551 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:43,551 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) [2024-08-14 09:14:43,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:46,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-08-14 09:14:46,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:46,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1758155467, now seen corresponding path program 1 times [2024-08-14 09:14:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:46,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996802764] [2024-08-14 09:14:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:46,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-08-14 09:14:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996802764] [2024-08-14 09:14:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996802764] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:46,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:46,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738875848] [2024-08-14 09:14:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:46,997 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:46,998 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) [2024-08-14 09:14:46,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:46,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:47,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-08-14 09:14:47,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:47,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 125596693, now seen corresponding path program 2 times [2024-08-14 09:14:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:47,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446302212] [2024-08-14 09:14:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-08-14 09:14:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446302212] [2024-08-14 09:14:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446302212] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415997296] [2024-08-14 09:14:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:48,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:48,222 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:48,222 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) [2024-08-14 09:14:48,222 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:48,222 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:48,222 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:49,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-08-14 09:14:49,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:49,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1072678548, now seen corresponding path program 1 times [2024-08-14 09:14:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:49,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117402171] [2024-08-14 09:14:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:49,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:49,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:49,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:49,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:49,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:49,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-08-14 09:14:49,362 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:49,363 WARN L234 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:49,363 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2024-08-14 09:14:49,403 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-08-14 09:14:49,405 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:49,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:49,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:49,407 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) [2024-08-14 09:14:49,412 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 [2024-08-14 09:14:49,416 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:49,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:49,416 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:49,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:50,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:50,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash -806259558, now seen corresponding path program 1 times [2024-08-14 09:14:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770287224] [2024-08-14 09:14:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-08-14 09:14:50,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:50,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770287224] [2024-08-14 09:14:50,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770287224] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:50,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:50,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:50,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992231142] [2024-08-14 09:14:50,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:50,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:50,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:50,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:50,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:50,535 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:50,536 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) [2024-08-14 09:14:50,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:53,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-08-14 09:14:53,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:53,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1614554123, now seen corresponding path program 1 times [2024-08-14 09:14:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120980763] [2024-08-14 09:14:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-08-14 09:14:53,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:53,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120980763] [2024-08-14 09:14:53,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120980763] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:53,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:53,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:53,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271670320] [2024-08-14 09:14:53,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:53,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:14:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:14:53,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:14:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:53,828 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:53,828 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) [2024-08-14 09:14:53,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:53,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:54,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-08-14 09:14:54,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:54,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1943903239, now seen corresponding path program 2 times [2024-08-14 09:14:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936630410] [2024-08-14 09:14:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-08-14 09:14:54,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936630410] [2024-08-14 09:14:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936630410] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:54,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:14:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776604257] [2024-08-14 09:14:54,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:54,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:14:54,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:54,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:14:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:14:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:54,936 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:54,936 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) [2024-08-14 09:14:54,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:54,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:54,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:14:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:14:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-08-14 09:14:56,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:56,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash -311573222, now seen corresponding path program 1 times [2024-08-14 09:14:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554730006] [2024-08-14 09:14:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:56,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:56,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:14:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:14:56,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:14:56,392 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:14:56,392 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:14:56,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:14:56,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-08-14 09:14:56,393 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:14:56,393 WARN L234 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:14:56,393 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2024-08-14 09:14:56,445 INFO L144 ThreadInstanceAdder]: Constructed 22 joinOtherThreadTransitions. [2024-08-14 09:14:56,449 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:56,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:14:56,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:14:56,451 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) [2024-08-14 09:14:56,452 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 [2024-08-14 09:14:56,457 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:14:56,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:14:56,458 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:14:56,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:14:57,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:14:57,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:14:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1352969086, now seen corresponding path program 1 times [2024-08-14 09:14:57,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:14:57,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269170472] [2024-08-14 09:14:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:14:57,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:14:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:14:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-08-14 09:14:57,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:14:57,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269170472] [2024-08-14 09:14:57,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269170472] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:14:57,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:14:57,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:14:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106217654] [2024-08-14 09:14:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:14:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:14:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:14:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:14:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:14:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:14:57,854 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:14:57,854 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) [2024-08-14 09:14:57,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:01,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-08-14 09:15:01,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:01,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1397558707, now seen corresponding path program 1 times [2024-08-14 09:15:01,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:01,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127225074] [2024-08-14 09:15:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:01,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-08-14 09:15:01,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127225074] [2024-08-14 09:15:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127225074] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:01,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81845761] [2024-08-14 09:15:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:01,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:15:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:01,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:15:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:15:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:01,635 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:01,635 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) [2024-08-14 09:15:01,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:01,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:02,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-08-14 09:15:02,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:02,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1894790983, now seen corresponding path program 2 times [2024-08-14 09:15:02,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790975088] [2024-08-14 09:15:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-08-14 09:15:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:02,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790975088] [2024-08-14 09:15:02,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790975088] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:02,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:02,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:02,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028773706] [2024-08-14 09:15:02,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:02,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:15:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:15:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:15:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:02,631 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:02,631 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) [2024-08-14 09:15:02,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:02,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:02,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:15:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-08-14 09:15:04,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:04,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash 605839038, now seen corresponding path program 1 times [2024-08-14 09:15:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:04,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847221851] [2024-08-14 09:15:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:04,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:15:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:04,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:15:04,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:15:04,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:15:04,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:15:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-08-14 09:15:04,207 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:15:04,207 WARN L234 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:15:04,208 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2024-08-14 09:15:04,271 INFO L144 ThreadInstanceAdder]: Constructed 23 joinOtherThreadTransitions. [2024-08-14 09:15:04,275 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:15:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:15:04,277 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) [2024-08-14 09:15:04,283 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 [2024-08-14 09:15:04,285 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:15:04,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:15:04,286 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:04,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:15:05,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:05,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash -415041833, now seen corresponding path program 1 times [2024-08-14 09:15:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503834799] [2024-08-14 09:15:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:05,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-08-14 09:15:05,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503834799] [2024-08-14 09:15:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503834799] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:05,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:05,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:15:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8256466] [2024-08-14 09:15:05,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:05,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:15:05,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:05,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:15:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:15:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:05,727 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:05,727 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) [2024-08-14 09:15:05,728 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:09,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-08-14 09:15:09,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:09,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1682510176, now seen corresponding path program 1 times [2024-08-14 09:15:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:09,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370082262] [2024-08-14 09:15:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:09,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-08-14 09:15:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370082262] [2024-08-14 09:15:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370082262] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:09,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:09,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817494446] [2024-08-14 09:15:09,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:09,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:15:09,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:15:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:15:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:09,819 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:09,819 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) [2024-08-14 09:15:09,819 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:09,819 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-08-14 09:15:10,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:10,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1621458090, now seen corresponding path program 2 times [2024-08-14 09:15:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442044828] [2024-08-14 09:15:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-08-14 09:15:10,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:10,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442044828] [2024-08-14 09:15:10,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442044828] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:10,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:10,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917558782] [2024-08-14 09:15:10,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:10,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:15:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:15:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:15:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:10,985 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:10,985 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) [2024-08-14 09:15:10,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:10,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:10,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:15:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-08-14 09:15:12,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1086039968, now seen corresponding path program 1 times [2024-08-14 09:15:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802598972] [2024-08-14 09:15:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:12,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:12,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:15:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:12,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:15:12,489 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:15:12,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:15:12,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:15:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-08-14 09:15:12,490 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:15:12,490 WARN L234 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:15:12,490 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2024-08-14 09:15:12,541 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2024-08-14 09:15:12,544 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:12,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:15:12,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:15:12,546 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) [2024-08-14 09:15:12,551 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 [2024-08-14 09:15:12,555 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:15:12,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:15:12,556 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:12,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:15:14,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:14,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash 511145272, now seen corresponding path program 1 times [2024-08-14 09:15:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979774828] [2024-08-14 09:15:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-08-14 09:15:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979774828] [2024-08-14 09:15:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979774828] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:14,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:15:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767821813] [2024-08-14 09:15:14,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:15:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:15:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:15:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:14,097 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:14,098 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) [2024-08-14 09:15:14,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-08-14 09:15:18,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash 788182278, now seen corresponding path program 1 times [2024-08-14 09:15:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938615203] [2024-08-14 09:15:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-08-14 09:15:18,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938615203] [2024-08-14 09:15:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938615203] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992382602] [2024-08-14 09:15:18,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:18,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:15:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:15:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:15:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:18,410 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:18,410 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) [2024-08-14 09:15:18,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:18,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:19,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-08-14 09:15:19,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:19,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1364119944, now seen corresponding path program 2 times [2024-08-14 09:15:19,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:19,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537321561] [2024-08-14 09:15:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-08-14 09:15:20,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:20,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537321561] [2024-08-14 09:15:20,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537321561] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:20,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:20,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:20,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674484047] [2024-08-14 09:15:20,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:20,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:15:20,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:20,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:15:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:15:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:20,058 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:20,059 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) [2024-08-14 09:15:20,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:20,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:20,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:15:21,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-08-14 09:15:21,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:21,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1471853019, now seen corresponding path program 1 times [2024-08-14 09:15:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457021782] [2024-08-14 09:15:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:21,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:15:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:21,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:15:21,821 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:15:21,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:15:21,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:15:21,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-08-14 09:15:21,822 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:15:21,822 WARN L234 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:15:21,822 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2024-08-14 09:15:21,868 INFO L144 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2024-08-14 09:15:21,871 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:21,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:15:21,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:15:21,873 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) [2024-08-14 09:15:21,874 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 [2024-08-14 09:15:21,876 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:15:21,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:15:21,876 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:21,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:15:23,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1851640008, now seen corresponding path program 1 times [2024-08-14 09:15:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:23,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510154157] [2024-08-14 09:15:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:23,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-08-14 09:15:23,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510154157] [2024-08-14 09:15:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510154157] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:23,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:23,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:15:23,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441470814] [2024-08-14 09:15:23,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:23,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:15:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:15:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:15:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:23,459 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:23,459 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) [2024-08-14 09:15:23,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-08-14 09:15:27,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:27,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash -332290088, now seen corresponding path program 1 times [2024-08-14 09:15:27,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:27,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748545205] [2024-08-14 09:15:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:27,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-08-14 09:15:27,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748545205] [2024-08-14 09:15:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748545205] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:27,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:27,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951070320] [2024-08-14 09:15:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:15:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:15:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:15:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:27,685 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:27,685 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) [2024-08-14 09:15:27,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:27,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:28,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-08-14 09:15:28,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:28,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1892244586, now seen corresponding path program 2 times [2024-08-14 09:15:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071541615] [2024-08-14 09:15:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-08-14 09:15:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071541615] [2024-08-14 09:15:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071541615] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:29,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:29,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854984113] [2024-08-14 09:15:29,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:15:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:15:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:15:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:29,251 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:29,251 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) [2024-08-14 09:15:29,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:29,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:29,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:15:30,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-08-14 09:15:30,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:30,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1582928981, now seen corresponding path program 1 times [2024-08-14 09:15:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:30,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224725152] [2024-08-14 09:15:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:30,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:30,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:15:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:30,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:15:30,893 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:15:30,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:15:30,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:15:30,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-08-14 09:15:30,894 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:15:30,894 WARN L234 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:15:30,894 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2024-08-14 09:15:30,954 INFO L144 ThreadInstanceAdder]: Constructed 26 joinOtherThreadTransitions. [2024-08-14 09:15:30,957 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:15:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:15:30,959 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) [2024-08-14 09:15:30,959 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 [2024-08-14 09:15:30,962 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:15:30,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:15:30,962 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:30,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:15:32,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:32,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:32,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1351325510, now seen corresponding path program 1 times [2024-08-14 09:15:32,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:32,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538634284] [2024-08-14 09:15:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:32,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-08-14 09:15:32,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538634284] [2024-08-14 09:15:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538634284] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:15:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431462842] [2024-08-14 09:15:32,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:15:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:15:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:15:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:32,740 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:32,740 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) [2024-08-14 09:15:32,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-08-14 09:15:37,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:37,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash 686116577, now seen corresponding path program 1 times [2024-08-14 09:15:37,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429639472] [2024-08-14 09:15:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-08-14 09:15:37,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:37,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429639472] [2024-08-14 09:15:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429639472] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:37,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:37,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143121166] [2024-08-14 09:15:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:37,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:15:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:15:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:15:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:37,681 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:37,681 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) [2024-08-14 09:15:37,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:37,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:38,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-08-14 09:15:38,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:38,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1842280493, now seen corresponding path program 2 times [2024-08-14 09:15:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:38,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905000180] [2024-08-14 09:15:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2024-08-14 09:15:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905000180] [2024-08-14 09:15:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905000180] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773817525] [2024-08-14 09:15:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:15:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:15:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:15:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:38,983 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:38,983 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) [2024-08-14 09:15:38,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:38,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:38,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:15:40,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-08-14 09:15:40,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:40,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash -197160423, now seen corresponding path program 1 times [2024-08-14 09:15:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35914157] [2024-08-14 09:15:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:40,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:15:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:40,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:15:40,848 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:15:40,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:15:40,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:15:40,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-08-14 09:15:40,849 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:15:40,849 WARN L234 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:15:40,849 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2024-08-14 09:15:40,901 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2024-08-14 09:15:40,904 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:40,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:15:40,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:15:40,906 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) [2024-08-14 09:15:40,907 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 [2024-08-14 09:15:40,913 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:15:40,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:15:40,913 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:40,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:15:43,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:43,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash -577240063, now seen corresponding path program 1 times [2024-08-14 09:15:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:43,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140624559] [2024-08-14 09:15:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:43,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-08-14 09:15:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140624559] [2024-08-14 09:15:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140624559] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:43,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:15:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991864285] [2024-08-14 09:15:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:43,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:15:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:15:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:15:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:43,077 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:43,077 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) [2024-08-14 09:15:43,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:48,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-08-14 09:15:48,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:48,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -216635255, now seen corresponding path program 1 times [2024-08-14 09:15:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:48,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823624615] [2024-08-14 09:15:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:48,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-08-14 09:15:49,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:49,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823624615] [2024-08-14 09:15:49,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823624615] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:49,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:49,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:49,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298422725] [2024-08-14 09:15:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:49,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:15:49,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:15:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:15:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:49,261 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:49,261 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) [2024-08-14 09:15:49,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:49,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:50,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-08-14 09:15:50,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:50,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1371885639, now seen corresponding path program 2 times [2024-08-14 09:15:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005475831] [2024-08-14 09:15:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2024-08-14 09:15:50,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:50,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005475831] [2024-08-14 09:15:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005475831] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:50,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:50,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:15:50,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49060752] [2024-08-14 09:15:50,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:15:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:15:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:15:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:50,650 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:50,650 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) [2024-08-14 09:15:50,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:50,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:50,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:15:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:15:52,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-08-14 09:15:52,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:52,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1248183183, now seen corresponding path program 1 times [2024-08-14 09:15:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004642067] [2024-08-14 09:15:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:53,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:15:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:15:53,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:15:53,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:15:53,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:15:53,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:15:53,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-08-14 09:15:53,151 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:15:53,151 WARN L234 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:15:53,151 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2024-08-14 09:15:53,204 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2024-08-14 09:15:53,207 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:15:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:15:53,209 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) [2024-08-14 09:15:53,210 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 [2024-08-14 09:15:53,214 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:15:53,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:15:53,215 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:15:53,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:15:55,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:15:55,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:15:55,153 INFO L85 PathProgramCache]: Analyzing trace with hash 997792300, now seen corresponding path program 1 times [2024-08-14 09:15:55,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:15:55,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556954930] [2024-08-14 09:15:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:15:55,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:15:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:15:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-08-14 09:15:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:15:55,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556954930] [2024-08-14 09:15:55,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556954930] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:15:55,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:15:55,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:15:55,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074403190] [2024-08-14 09:15:55,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:15:55,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:15:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:15:55,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:15:55,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:15:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:15:55,209 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:15:55,209 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) [2024-08-14 09:15:55,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:00,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-08-14 09:16:00,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:00,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:00,876 INFO L85 PathProgramCache]: Analyzing trace with hash 667621604, now seen corresponding path program 1 times [2024-08-14 09:16:00,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:00,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450386620] [2024-08-14 09:16:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:00,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2024-08-14 09:16:01,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450386620] [2024-08-14 09:16:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450386620] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036487836] [2024-08-14 09:16:01,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:16:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:16:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:16:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:01,146 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:01,147 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) [2024-08-14 09:16:01,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:01,147 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-08-14 09:16:02,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:02,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 969479858, now seen corresponding path program 2 times [2024-08-14 09:16:02,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:02,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016621917] [2024-08-14 09:16:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2024-08-14 09:16:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:02,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016621917] [2024-08-14 09:16:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016621917] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:02,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:02,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:02,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342072329] [2024-08-14 09:16:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:02,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:16:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:02,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:16:02,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:16:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:02,743 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:02,743 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) [2024-08-14 09:16:02,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:02,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:02,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:16:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-08-14 09:16:04,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:04,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash 109900371, now seen corresponding path program 1 times [2024-08-14 09:16:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699978873] [2024-08-14 09:16:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:04,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:16:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:05,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:16:05,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:16:05,226 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:16:05,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:16:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-08-14 09:16:05,231 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:16:05,231 WARN L234 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:16:05,231 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2024-08-14 09:16:05,329 INFO L144 ThreadInstanceAdder]: Constructed 29 joinOtherThreadTransitions. [2024-08-14 09:16:05,340 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:05,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:16:05,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:16:05,345 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) [2024-08-14 09:16:05,347 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 [2024-08-14 09:16:05,349 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:16:05,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:16:05,350 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:05,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:16:07,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:07,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash 275099274, now seen corresponding path program 1 times [2024-08-14 09:16:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651423540] [2024-08-14 09:16:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-08-14 09:16:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651423540] [2024-08-14 09:16:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651423540] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:07,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:07,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:16:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906898397] [2024-08-14 09:16:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:07,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:16:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:16:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:16:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:07,535 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:07,535 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) [2024-08-14 09:16:07,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-08-14 09:16:13,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:13,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:13,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1050564924, now seen corresponding path program 1 times [2024-08-14 09:16:13,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:13,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783572761] [2024-08-14 09:16:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-08-14 09:16:14,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783572761] [2024-08-14 09:16:14,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783572761] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:14,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517473309] [2024-08-14 09:16:14,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:14,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:16:14,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:16:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:16:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:14,078 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:14,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:14,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-08-14 09:16:15,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1870402044, now seen corresponding path program 2 times [2024-08-14 09:16:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700661683] [2024-08-14 09:16:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-08-14 09:16:15,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700661683] [2024-08-14 09:16:15,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700661683] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:15,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:15,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:15,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172041376] [2024-08-14 09:16:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:16:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:16:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:16:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:15,508 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:15,509 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) [2024-08-14 09:16:15,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:15,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:15,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:16:17,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-08-14 09:16:17,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:17,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:17,946 INFO L85 PathProgramCache]: Analyzing trace with hash -692580493, now seen corresponding path program 1 times [2024-08-14 09:16:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:17,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901893335] [2024-08-14 09:16:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:18,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:16:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:18,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:16:18,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:16:18,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:16:18,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:16:18,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-08-14 09:16:18,087 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:16:18,087 WARN L234 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:16:18,087 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2024-08-14 09:16:18,141 INFO L144 ThreadInstanceAdder]: Constructed 30 joinOtherThreadTransitions. [2024-08-14 09:16:18,144 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:18,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:16:18,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:16:18,146 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) [2024-08-14 09:16:18,147 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 [2024-08-14 09:16:18,150 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:16:18,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:16:18,150 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:18,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:16:20,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:20,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 882447022, now seen corresponding path program 1 times [2024-08-14 09:16:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:20,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192555686] [2024-08-14 09:16:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-08-14 09:16:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192555686] [2024-08-14 09:16:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192555686] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:20,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:20,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:16:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582199145] [2024-08-14 09:16:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:20,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:16:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:16:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:16:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:20,742 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:20,743 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) [2024-08-14 09:16:20,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:26,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-08-14 09:16:26,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:26,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash 465181344, now seen corresponding path program 1 times [2024-08-14 09:16:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258978617] [2024-08-14 09:16:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2024-08-14 09:16:27,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258978617] [2024-08-14 09:16:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258978617] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:27,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:27,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089966141] [2024-08-14 09:16:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:16:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:16:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:16:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:27,271 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:27,271 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) [2024-08-14 09:16:27,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:27,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-08-14 09:16:28,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1705464346, now seen corresponding path program 2 times [2024-08-14 09:16:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790319408] [2024-08-14 09:16:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:28,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 1191 trivial. 0 not checked. [2024-08-14 09:16:28,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790319408] [2024-08-14 09:16:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790319408] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:28,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:28,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:28,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895122959] [2024-08-14 09:16:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:28,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:16:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:16:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:16:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:28,705 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:28,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:28,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:28,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:16:31,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-08-14 09:16:31,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:31,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1789385528, now seen corresponding path program 1 times [2024-08-14 09:16:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393780505] [2024-08-14 09:16:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:31,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:16:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:31,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:16:31,756 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:16:31,756 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:16:31,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:16:31,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-08-14 09:16:31,761 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:16:31,761 WARN L234 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:16:31,761 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2024-08-14 09:16:31,870 INFO L144 ThreadInstanceAdder]: Constructed 31 joinOtherThreadTransitions. [2024-08-14 09:16:31,876 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:31,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:16:31,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:16:31,880 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:16:31,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (32)] Waiting until timeout for monitored process [2024-08-14 09:16:31,885 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:16:31,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:16:31,886 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:31,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:16:34,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:34,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1568342117, now seen corresponding path program 1 times [2024-08-14 09:16:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:34,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581147671] [2024-08-14 09:16:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:34,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-08-14 09:16:34,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581147671] [2024-08-14 09:16:34,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581147671] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:34,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:34,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:16:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037998938] [2024-08-14 09:16:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:34,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:16:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:16:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:16:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:34,730 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:34,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:42,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-08-14 09:16:42,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:42,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:42,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1404581081, now seen corresponding path program 1 times [2024-08-14 09:16:42,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:42,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949899214] [2024-08-14 09:16:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:42,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2024-08-14 09:16:42,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:42,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949899214] [2024-08-14 09:16:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949899214] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:42,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:42,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430226009] [2024-08-14 09:16:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:42,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:16:42,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:42,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:16:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:16:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:42,476 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:42,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:42,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:43,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-08-14 09:16:43,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:43,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1065555539, now seen corresponding path program 2 times [2024-08-14 09:16:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403064994] [2024-08-14 09:16:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:43,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2024-08-14 09:16:44,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403064994] [2024-08-14 09:16:44,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403064994] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:44,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:44,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183547477] [2024-08-14 09:16:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:44,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:16:44,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:16:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:16:44,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:44,200 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:44,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:44,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:44,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:16:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-08-14 09:16:46,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:46,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1335193873, now seen corresponding path program 1 times [2024-08-14 09:16:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292250654] [2024-08-14 09:16:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:46,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:16:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:16:47,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:16:47,129 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:16:47,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:16:47,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:16:47,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-08-14 09:16:47,130 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:16:47,130 WARN L234 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:16:47,130 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2024-08-14 09:16:47,199 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2024-08-14 09:16:47,202 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:47,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:16:47,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:16:47,204 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:16:47,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (33)] Waiting until timeout for monitored process [2024-08-14 09:16:47,210 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:16:47,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:16:47,210 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:16:47,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:16:49,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:49,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash -961897256, now seen corresponding path program 1 times [2024-08-14 09:16:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:49,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549679091] [2024-08-14 09:16:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2024-08-14 09:16:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549679091] [2024-08-14 09:16:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549679091] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:49,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:16:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102420909] [2024-08-14 09:16:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:49,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:16:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:16:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:16:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:49,905 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:49,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:49,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:56,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-08-14 09:16:56,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:56,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1969196126, now seen corresponding path program 1 times [2024-08-14 09:16:56,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:56,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211624372] [2024-08-14 09:16:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:56,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2024-08-14 09:16:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:57,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211624372] [2024-08-14 09:16:57,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211624372] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:57,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069423412] [2024-08-14 09:16:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:57,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:16:57,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:16:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:16:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:57,081 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:57,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:57,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:57,082 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-08-14 09:16:57,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:16:57,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:16:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 718608836, now seen corresponding path program 2 times [2024-08-14 09:16:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:16:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855311175] [2024-08-14 09:16:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:16:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:16:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:16:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2024-08-14 09:16:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:16:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855311175] [2024-08-14 09:16:58,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855311175] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:16:58,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:16:58,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:16:58,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126845335] [2024-08-14 09:16:58,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:16:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:16:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:16:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:16:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:16:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:58,554 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:16:58,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:16:58,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:16:58,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:16:58,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:17:01,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-08-14 09:17:01,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:01,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1955065294, now seen corresponding path program 1 times [2024-08-14 09:17:01,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:01,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611703403] [2024-08-14 09:17:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:01,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:01,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:17:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:01,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:17:01,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:17:01,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:17:01,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:17:01,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-08-14 09:17:01,483 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:17:01,483 WARN L234 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:17:01,483 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2024-08-14 09:17:01,543 INFO L144 ThreadInstanceAdder]: Constructed 33 joinOtherThreadTransitions. [2024-08-14 09:17:01,547 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:01,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:17:01,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:17:01,549 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:17:01,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (34)] Waiting until timeout for monitored process [2024-08-14 09:17:01,553 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:17:01,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:17:01,553 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:01,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:17:04,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:04,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash -406166388, now seen corresponding path program 1 times [2024-08-14 09:17:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446894346] [2024-08-14 09:17:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2024-08-14 09:17:04,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:04,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446894346] [2024-08-14 09:17:04,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446894346] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:04,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:04,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:17:04,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093308123] [2024-08-14 09:17:04,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:04,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:17:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:17:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:17:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:04,324 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:04,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:04,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:11,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-08-14 09:17:11,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:11,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -747501083, now seen corresponding path program 1 times [2024-08-14 09:17:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:11,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986661458] [2024-08-14 09:17:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:11,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2024-08-14 09:17:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986661458] [2024-08-14 09:17:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986661458] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:17:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758817006] [2024-08-14 09:17:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:17:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:17:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:17:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:11,969 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:11,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:11,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:11,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-08-14 09:17:13,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:13,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash 891093733, now seen corresponding path program 2 times [2024-08-14 09:17:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:13,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790407556] [2024-08-14 09:17:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-08-14 09:17:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790407556] [2024-08-14 09:17:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790407556] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:17:13,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402926581] [2024-08-14 09:17:13,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:13,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:17:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:17:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:17:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:13,754 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:13,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:13,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:13,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:13,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:17:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-08-14 09:17:16,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1232655330, now seen corresponding path program 1 times [2024-08-14 09:17:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498488518] [2024-08-14 09:17:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:16,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:17:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:17,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:17:17,098 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:17:17,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:17:17,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:17:17,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-08-14 09:17:17,099 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:17:17,099 WARN L234 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:17:17,099 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2024-08-14 09:17:17,163 INFO L144 ThreadInstanceAdder]: Constructed 34 joinOtherThreadTransitions. [2024-08-14 09:17:17,166 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:17,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:17:17,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:17:17,168 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:17:17,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (35)] Waiting until timeout for monitored process [2024-08-14 09:17:17,173 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:17:17,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:17:17,174 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:17,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:17:20,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:20,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1199988870, now seen corresponding path program 1 times [2024-08-14 09:17:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089956247] [2024-08-14 09:17:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:20,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2024-08-14 09:17:20,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:20,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089956247] [2024-08-14 09:17:20,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089956247] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:20,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:20,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:17:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905829200] [2024-08-14 09:17:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:20,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:17:20,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:20,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:17:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:17:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:20,233 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:20,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:20,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:29,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-08-14 09:17:29,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:29,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:29,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1387835515, now seen corresponding path program 1 times [2024-08-14 09:17:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604389808] [2024-08-14 09:17:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2024-08-14 09:17:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604389808] [2024-08-14 09:17:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604389808] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:29,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:29,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:17:29,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97349035] [2024-08-14 09:17:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:29,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:17:29,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:17:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:17:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:29,766 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:29,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:29,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:29,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:31,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-08-14 09:17:31,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:31,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1531316829, now seen corresponding path program 2 times [2024-08-14 09:17:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945031499] [2024-08-14 09:17:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-08-14 09:17:31,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945031499] [2024-08-14 09:17:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945031499] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:17:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985305040] [2024-08-14 09:17:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:31,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:17:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:17:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:17:31,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:31,674 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:31,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:31,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:31,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:17:35,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-08-14 09:17:35,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:35,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1503106169, now seen corresponding path program 1 times [2024-08-14 09:17:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:35,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058180105] [2024-08-14 09:17:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:35,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:35,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:17:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:35,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:17:35,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:17:35,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:17:35,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:17:35,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-08-14 09:17:35,712 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:17:35,712 WARN L234 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:17:35,712 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2024-08-14 09:17:35,781 INFO L144 ThreadInstanceAdder]: Constructed 35 joinOtherThreadTransitions. [2024-08-14 09:17:35,785 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:35,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:17:35,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:17:35,787 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:17:35,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (36)] Waiting until timeout for monitored process [2024-08-14 09:17:35,791 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:17:35,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:17:35,792 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:35,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:17:38,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:38,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2141737773, now seen corresponding path program 1 times [2024-08-14 09:17:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:38,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22255963] [2024-08-14 09:17:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2024-08-14 09:17:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22255963] [2024-08-14 09:17:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22255963] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:38,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:38,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:17:38,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754587714] [2024-08-14 09:17:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:17:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:17:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:17:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:38,849 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:38,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:38,849 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:47,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-08-14 09:17:47,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:47,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1655279902, now seen corresponding path program 1 times [2024-08-14 09:17:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299751444] [2024-08-14 09:17:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2024-08-14 09:17:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299751444] [2024-08-14 09:17:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299751444] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:48,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:17:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533344116] [2024-08-14 09:17:48,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:17:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:17:48,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:17:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:48,012 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:48,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:48,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:49,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-08-14 09:17:49,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:49,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1310478226, now seen corresponding path program 2 times [2024-08-14 09:17:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:49,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51062407] [2024-08-14 09:17:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2024-08-14 09:17:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51062407] [2024-08-14 09:17:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51062407] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:49,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:49,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:17:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061089085] [2024-08-14 09:17:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:17:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:17:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:17:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:49,699 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:49,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:49,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:49,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:17:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:17:53,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-08-14 09:17:53,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:53,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:53,151 INFO L85 PathProgramCache]: Analyzing trace with hash -808029690, now seen corresponding path program 1 times [2024-08-14 09:17:53,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:53,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368150469] [2024-08-14 09:17:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:53,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:17:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:17:53,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:17:53,515 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:17:53,515 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:17:53,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:17:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-08-14 09:17:53,516 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:17:53,516 WARN L234 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:17:53,516 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2024-08-14 09:17:53,583 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2024-08-14 09:17:53,587 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:53,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:17:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:17:53,589 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:17:53,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (37)] Waiting until timeout for monitored process [2024-08-14 09:17:53,594 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:17:53,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:17:53,594 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:17:53,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:17:56,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:17:56,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:17:56,829 INFO L85 PathProgramCache]: Analyzing trace with hash -790160248, now seen corresponding path program 1 times [2024-08-14 09:17:56,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:17:56,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751097209] [2024-08-14 09:17:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:17:56,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:17:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:17:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2024-08-14 09:17:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:17:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751097209] [2024-08-14 09:17:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751097209] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:17:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:17:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:17:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328551525] [2024-08-14 09:17:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:17:56,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:17:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:17:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:17:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:17:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:17:56,928 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:17:56,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:17:56,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:05,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-08-14 09:18:05,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:05,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1933199694, now seen corresponding path program 1 times [2024-08-14 09:18:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859788969] [2024-08-14 09:18:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2024-08-14 09:18:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859788969] [2024-08-14 09:18:05,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859788969] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:05,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:05,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:18:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291092852] [2024-08-14 09:18:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:05,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:18:05,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:18:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:18:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:05,760 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:05,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:05,760 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:05,760 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:06,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-08-14 09:18:06,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:06,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:06,694 INFO L85 PathProgramCache]: Analyzing trace with hash 238576400, now seen corresponding path program 2 times [2024-08-14 09:18:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:06,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904411325] [2024-08-14 09:18:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:06,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2024-08-14 09:18:07,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:07,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904411325] [2024-08-14 09:18:07,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904411325] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:07,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:18:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946235174] [2024-08-14 09:18:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:18:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:07,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:18:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:18:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:07,827 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:07,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.5) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:07,827 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:07,827 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:07,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:18:11,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-08-14 09:18:11,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:11,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash 348797789, now seen corresponding path program 1 times [2024-08-14 09:18:11,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:11,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579313192] [2024-08-14 09:18:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:11,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:18:11,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:18:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:18:11,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:18:11,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:18:11,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:18:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:18:11,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-08-14 09:18:11,932 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:18:11,933 WARN L234 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:18:11,933 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2024-08-14 09:18:12,034 INFO L144 ThreadInstanceAdder]: Constructed 37 joinOtherThreadTransitions. [2024-08-14 09:18:12,038 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:18:12,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:18:12,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:18:12,040 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:18:12,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (38)] Waiting until timeout for monitored process [2024-08-14 09:18:12,046 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:18:12,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:18:12,046 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:18:12,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:18:15,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 555041374, now seen corresponding path program 1 times [2024-08-14 09:18:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:15,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280496717] [2024-08-14 09:18:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2024-08-14 09:18:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280496717] [2024-08-14 09:18:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280496717] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:15,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:18:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893568711] [2024-08-14 09:18:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:18:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:18:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:18:15,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:15,629 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:15,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:15,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:25,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-08-14 09:18:25,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:25,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash 746341468, now seen corresponding path program 1 times [2024-08-14 09:18:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:25,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946005477] [2024-08-14 09:18:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2024-08-14 09:18:26,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946005477] [2024-08-14 09:18:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946005477] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:26,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:18:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036742749] [2024-08-14 09:18:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:18:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:18:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:18:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:26,496 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:26,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:26,496 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:26,496 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-08-14 09:18:27,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:27,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1581458832, now seen corresponding path program 2 times [2024-08-14 09:18:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288220006] [2024-08-14 09:18:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:27,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2024-08-14 09:18:28,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288220006] [2024-08-14 09:18:28,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288220006] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:28,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:28,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:18:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850439912] [2024-08-14 09:18:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:28,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:18:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:18:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:18:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:28,479 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:28,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.0) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:28,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:28,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:28,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:32,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:32,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:32,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:18:32,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-08-14 09:18:32,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:32,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1557764475, now seen corresponding path program 1 times [2024-08-14 09:18:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:32,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510598861] [2024-08-14 09:18:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:18:32,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:18:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:18:33,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:18:33,107 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:18:33,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:18:33,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:18:33,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-08-14 09:18:33,108 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:18:33,108 WARN L234 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:18:33,108 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2024-08-14 09:18:33,180 INFO L144 ThreadInstanceAdder]: Constructed 38 joinOtherThreadTransitions. [2024-08-14 09:18:33,183 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:18:33,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:18:33,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:18:33,185 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:18:33,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (39)] Waiting until timeout for monitored process [2024-08-14 09:18:33,189 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:18:33,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:18:33,190 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:18:33,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:18:36,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:36,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2058200154, now seen corresponding path program 1 times [2024-08-14 09:18:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:36,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639981244] [2024-08-14 09:18:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2024-08-14 09:18:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639981244] [2024-08-14 09:18:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639981244] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:36,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:36,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:18:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694238114] [2024-08-14 09:18:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:36,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:18:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:18:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:18:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:36,888 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:36,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:36,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:47,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-08-14 09:18:47,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:47,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1596146045, now seen corresponding path program 1 times [2024-08-14 09:18:47,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21295594] [2024-08-14 09:18:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:47,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2024-08-14 09:18:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21295594] [2024-08-14 09:18:47,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21295594] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:47,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:47,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:18:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181724590] [2024-08-14 09:18:47,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:47,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:18:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:18:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:18:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:47,701 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:47,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:47,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:47,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-08-14 09:18:48,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:48,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1827043071, now seen corresponding path program 2 times [2024-08-14 09:18:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245222769] [2024-08-14 09:18:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2024-08-14 09:18:49,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:49,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245222769] [2024-08-14 09:18:49,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245222769] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:49,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:49,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:18:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065635399] [2024-08-14 09:18:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:49,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:18:49,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:18:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:18:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:49,563 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:49,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:49,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:49,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:49,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:18:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:18:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-08-14 09:18:54,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:54,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1383525733, now seen corresponding path program 1 times [2024-08-14 09:18:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:54,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992157523] [2024-08-14 09:18:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:54,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:18:54,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:18:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:18:54,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:18:54,500 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:18:54,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:18:54,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:18:54,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-08-14 09:18:54,501 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:18:54,501 WARN L234 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:18:54,502 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2024-08-14 09:18:54,587 INFO L144 ThreadInstanceAdder]: Constructed 39 joinOtherThreadTransitions. [2024-08-14 09:18:54,595 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:18:54,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:18:54,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:18:54,600 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:18:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (40)] Waiting until timeout for monitored process [2024-08-14 09:18:54,605 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:18:54,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:18:54,606 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:18:54,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:18:58,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:18:58,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:18:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1579705745, now seen corresponding path program 1 times [2024-08-14 09:18:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:18:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401421409] [2024-08-14 09:18:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:18:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:18:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:18:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2024-08-14 09:18:58,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:18:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401421409] [2024-08-14 09:18:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401421409] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:18:58,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:18:58,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:18:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508123591] [2024-08-14 09:18:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:18:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:18:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:18:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:18:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:18:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:18:58,287 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:18:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:18:58,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:07,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-08-14 09:19:07,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:07,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -858718283, now seen corresponding path program 1 times [2024-08-14 09:19:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:07,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957068524] [2024-08-14 09:19:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2024-08-14 09:19:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:08,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957068524] [2024-08-14 09:19:08,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957068524] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:08,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:19:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509295199] [2024-08-14 09:19:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:08,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:19:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:19:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:19:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:08,541 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:08,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:08,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:08,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:19:09,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-08-14 09:19:09,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:09,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1985644397, now seen corresponding path program 2 times [2024-08-14 09:19:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243987657] [2024-08-14 09:19:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 2073 trivial. 0 not checked. [2024-08-14 09:19:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:10,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243987657] [2024-08-14 09:19:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243987657] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:10,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:10,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:19:10,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616760485] [2024-08-14 09:19:10,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:10,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:19:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:19:10,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:19:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:10,440 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:10,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:10,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:10,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:19:10,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:19:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:19:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-08-14 09:19:14,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:14,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -548476137, now seen corresponding path program 1 times [2024-08-14 09:19:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:14,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171744007] [2024-08-14 09:19:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:19:15,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:19:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:19:15,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:19:15,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:19:15,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:19:15,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:19:15,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-08-14 09:19:15,220 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:19:15,220 WARN L234 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:19:15,220 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2024-08-14 09:19:15,293 INFO L144 ThreadInstanceAdder]: Constructed 40 joinOtherThreadTransitions. [2024-08-14 09:19:15,301 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:19:15,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:19:15,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:19:15,307 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:19:15,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (41)] Waiting until timeout for monitored process [2024-08-14 09:19:15,311 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:19:15,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:19:15,312 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:19:15,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:19:19,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:19,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:19,543 INFO L85 PathProgramCache]: Analyzing trace with hash 996393904, now seen corresponding path program 1 times [2024-08-14 09:19:19,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:19,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903704137] [2024-08-14 09:19:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:19,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2024-08-14 09:19:19,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:19,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903704137] [2024-08-14 09:19:19,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903704137] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:19,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:19,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:19:19,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586887136] [2024-08-14 09:19:19,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:19,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:19:19,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:19:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:19:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:19,629 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:19,629 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:31,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-08-14 09:19:31,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:31,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1476947158, now seen corresponding path program 1 times [2024-08-14 09:19:31,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:31,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537175508] [2024-08-14 09:19:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2024-08-14 09:19:32,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:32,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537175508] [2024-08-14 09:19:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537175508] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:32,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:32,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:19:32,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331133658] [2024-08-14 09:19:32,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:19:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:19:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:19:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:32,245 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:32,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:32,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:32,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:19:33,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-08-14 09:19:33,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:33,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash 40362128, now seen corresponding path program 2 times [2024-08-14 09:19:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75022649] [2024-08-14 09:19:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:33,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 2186 trivial. 0 not checked. [2024-08-14 09:19:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75022649] [2024-08-14 09:19:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75022649] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:34,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:19:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124077214] [2024-08-14 09:19:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:19:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:19:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:19:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:34,556 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:34,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:34,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:34,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:19:34,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:19:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:19:40,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-08-14 09:19:40,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:40,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash 711425660, now seen corresponding path program 1 times [2024-08-14 09:19:40,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818670702] [2024-08-14 09:19:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:40,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:19:40,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:19:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:19:40,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:19:40,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:19:40,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:19:40,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:19:40,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-08-14 09:19:40,336 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:19:40,336 WARN L234 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:19:40,336 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2024-08-14 09:19:40,411 INFO L144 ThreadInstanceAdder]: Constructed 41 joinOtherThreadTransitions. [2024-08-14 09:19:40,419 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:19:40,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:19:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:19:40,428 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:19:40,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (42)] Waiting until timeout for monitored process [2024-08-14 09:19:40,438 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:19:40,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:19:40,438 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:19:40,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 09:19:44,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:44,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1556338016, now seen corresponding path program 1 times [2024-08-14 09:19:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:44,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647592794] [2024-08-14 09:19:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-08-14 09:19:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647592794] [2024-08-14 09:19:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647592794] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:45,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:45,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 09:19:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779334315] [2024-08-14 09:19:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 09:19:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 09:19:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 09:19:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:45,221 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:45,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:45,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-08-14 09:19:57,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:19:57,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:19:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash 583990170, now seen corresponding path program 1 times [2024-08-14 09:19:57,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:19:57,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88418906] [2024-08-14 09:19:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:19:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:19:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:19:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2024-08-14 09:19:58,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:19:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88418906] [2024-08-14 09:19:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88418906] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:19:58,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:19:58,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:19:58,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16207284] [2024-08-14 09:19:58,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:19:58,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 09:19:58,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:19:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 09:19:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 09:19:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:58,603 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:19:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:19:58,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:19:58,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:20:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:20:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:20:00,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-08-14 09:20:00,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:20:00,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:20:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash 320340228, now seen corresponding path program 2 times [2024-08-14 09:20:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:20:00,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908222557] [2024-08-14 09:20:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:20:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:20:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 09:20:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2024-08-14 09:20:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 09:20:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908222557] [2024-08-14 09:20:00,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908222557] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 09:20:00,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 09:20:00,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 09:20:00,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502406235] [2024-08-14 09:20:00,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 09:20:00,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 09:20:00,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 09:20:00,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 09:20:00,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 09:20:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:20:00,964 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 09:20:00,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 09:20:00,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:20:00,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:20:00,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:20:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 09:20:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 09:20:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 09:20:06,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-08-14 09:20:06,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 09:20:06,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 09:20:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2020432981, now seen corresponding path program 1 times [2024-08-14 09:20:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 09:20:06,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655573501] [2024-08-14 09:20:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 09:20:06,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 09:20:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:20:07,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 09:20:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 09:20:07,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 09:20:07,228 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 09:20:07,228 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 09:20:07,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-08-14 09:20:07,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-08-14 09:20:07,229 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-08-14 09:20:07,229 WARN L234 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 09:20:07,229 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2024-08-14 09:20:07,312 INFO L144 ThreadInstanceAdder]: Constructed 42 joinOtherThreadTransitions. [2024-08-14 09:20:07,316 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:20:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 09:20:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 09:20:07,319 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 09:20:07,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (43)] Waiting until timeout for monitored process [2024-08-14 09:20:07,328 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 09:20:07,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 09:20:07,329 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;@1f6e226f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 09:20:07,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations.