./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:01:33,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:01:34,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:01:34,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:01:34,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:01:34,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:01:34,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:01:34,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:01:34,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:01:34,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:01:34,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:01:34,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:01:34,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:01:34,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:01:34,058 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:01:34,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:01:34,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:01:34,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:01:34,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:01:34,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:01:34,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:01:34,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:01:34,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:01:34,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:01:34,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:01:34,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:01:34,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:01:34,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:01:34,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:01:34,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:01:34,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:01:34,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:01:34,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:34,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:01:34,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:01:34,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:01:34,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:01:34,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:01:34,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:01:34,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:01:34,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:01:34,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:01:34,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:01:34,065 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:01:34,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:01:34,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:01:34,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:01:34,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:01:34,324 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:01:34,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2024-02-19 14:01:35,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:01:35,772 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:01:35,773 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2024-02-19 14:01:35,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419a461e2/50dcf82d881f4b379d004dc7aa582cbb/FLAG29bfde2c7 [2024-02-19 14:01:35,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419a461e2/50dcf82d881f4b379d004dc7aa582cbb [2024-02-19 14:01:35,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:01:35,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:01:35,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:35,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:01:35,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:01:35,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:35" (1/1) ... [2024-02-19 14:01:35,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462cbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:35, skipping insertion in model container [2024-02-19 14:01:35,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:35" (1/1) ... [2024-02-19 14:01:35,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:01:36,266 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43272,43285] [2024-02-19 14:01:36,273 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43545,43558] [2024-02-19 14:01:36,279 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:36,296 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:01:36,345 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43272,43285] [2024-02-19 14:01:36,349 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43545,43558] [2024-02-19 14:01:36,355 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:36,439 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:01:36,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36 WrapperNode [2024-02-19 14:01:36,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:36,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:36,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:01:36,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:01:36,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,505 INFO L138 Inliner]: procedures = 275, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2024-02-19 14:01:36,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:36,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:01:36,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:01:36,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:01:36,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,544 INFO L175 MemorySlicer]: Split 38 memory accesses to 6 slices as follows [2, 5, 3, 24, 2, 2]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0, 0]. The 15 writes are split as follows [0, 0, 2, 11, 1, 1]. [2024-02-19 14:01:36,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:01:36,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:01:36,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:01:36,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:01:36,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:36,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:36,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:01:36,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:01:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-02-19 14:01:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-02-19 14:01:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-02-19 14:01:36,677 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-02-19 14:01:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:01:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:01:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 14:01:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:01:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:01:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:01:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:01:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:01:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 14:01:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-19 14:01:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:01:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:01:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:01:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:01:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:01:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:01:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 14:01:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:01:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:01:36,685 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:01:36,853 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:01:36,855 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:01:37,114 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:01:37,114 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:01:37,336 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:01:37,337 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-19 14:01:37,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:37 BoogieIcfgContainer [2024-02-19 14:01:37,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:01:37,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:01:37,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:01:37,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:01:37,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:01:35" (1/3) ... [2024-02-19 14:01:37,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac672d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:37, skipping insertion in model container [2024-02-19 14:01:37,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (2/3) ... [2024-02-19 14:01:37,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac672d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:37, skipping insertion in model container [2024-02-19 14:01:37,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:37" (3/3) ... [2024-02-19 14:01:37,356 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-02-19 14:01:37,370 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:01:37,384 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-19 14:01:37,384 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:01:37,450 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-19 14:01:37,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 41 transitions, 96 flow [2024-02-19 14:01:37,513 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2024-02-19 14:01:37,513 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:01:37,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 7/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-02-19 14:01:37,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 41 transitions, 96 flow [2024-02-19 14:01:37,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 37 transitions, 83 flow [2024-02-19 14:01:37,539 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:01:37,549 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@67c0a5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:01:37,549 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:01:37,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:01:37,553 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-19 14:01:37,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:01:37,553 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:37,554 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-19 14:01:37,554 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:37,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash 541883, now seen corresponding path program 1 times [2024-02-19 14:01:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:37,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015644703] [2024-02-19 14:01:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015644703] [2024-02-19 14:01:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015644703] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:37,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:01:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047867992] [2024-02-19 14:01:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:37,706 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-19 14:01:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-19 14:01:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-19 14:01:37,728 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:37,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 83 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:37,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:37,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:37,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:37,902 INFO L124 PetriNetUnfolderBase]: 303/522 cut-off events. [2024-02-19 14:01:37,902 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-02-19 14:01:37,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 522 events. 303/522 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2052 event pairs, 209 based on Foata normal form. 16/458 useless extension candidates. Maximal degree in co-relation 914. Up to 485 conditions per place. [2024-02-19 14:01:37,907 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 26 selfloop transitions, 0 changer transitions 2/33 dead transitions. [2024-02-19 14:01:37,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 131 flow [2024-02-19 14:01:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-19 14:01:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-19 14:01:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2024-02-19 14:01:37,916 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-02-19 14:01:37,919 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-02-19 14:01:37,919 INFO L507 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 131 flow [2024-02-19 14:01:37,919 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:37,919 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:37,920 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:37,920 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:01:37,920 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:37,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2030950034, now seen corresponding path program 1 times [2024-02-19 14:01:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:37,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074810501] [2024-02-19 14:01:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074810501] [2024-02-19 14:01:38,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074810501] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:38,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:38,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:01:38,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159599789] [2024-02-19 14:01:38,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,168 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:01:38,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:01:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:01:38,173 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:38,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:38,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,303 INFO L124 PetriNetUnfolderBase]: 231/444 cut-off events. [2024-02-19 14:01:38,304 INFO L125 PetriNetUnfolderBase]: For 73/107 co-relation queries the response was YES. [2024-02-19 14:01:38,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 444 events. 231/444 cut-off events. For 73/107 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1813 event pairs, 121 based on Foata normal form. 14/414 useless extension candidates. Maximal degree in co-relation 1074. Up to 413 conditions per place. [2024-02-19 14:01:38,309 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 28 selfloop transitions, 2 changer transitions 9/44 dead transitions. [2024-02-19 14:01:38,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 259 flow [2024-02-19 14:01:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:01:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:01:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-02-19 14:01:38,313 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-02-19 14:01:38,313 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-02-19 14:01:38,313 INFO L507 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 259 flow [2024-02-19 14:01:38,314 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,314 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,315 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,317 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:01:38,317 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:38,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2039704393, now seen corresponding path program 1 times [2024-02-19 14:01:38,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461388396] [2024-02-19 14:01:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461388396] [2024-02-19 14:01:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461388396] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:38,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:38,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:01:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124817600] [2024-02-19 14:01:38,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,424 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:01:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:01:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:01:38,425 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:38,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 259 flow. Second operand 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) [2024-02-19 14:01:38,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:38,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,551 INFO L124 PetriNetUnfolderBase]: 246/471 cut-off events. [2024-02-19 14:01:38,551 INFO L125 PetriNetUnfolderBase]: For 110/162 co-relation queries the response was YES. [2024-02-19 14:01:38,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 471 events. 246/471 cut-off events. For 110/162 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1917 event pairs, 121 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1526. Up to 440 conditions per place. [2024-02-19 14:01:38,553 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 34 selfloop transitions, 2 changer transitions 11/52 dead transitions. [2024-02-19 14:01:38,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 404 flow [2024-02-19 14:01:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:01:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:01:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-02-19 14:01:38,555 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-02-19 14:01:38,557 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-02-19 14:01:38,557 INFO L507 AbstractCegarLoop]: Abstraction has has 40 places, 52 transitions, 404 flow [2024-02-19 14:01:38,557 INFO L508 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) [2024-02-19 14:01:38,557 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,557 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,557 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:01:38,558 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:38,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash -453168286, now seen corresponding path program 1 times [2024-02-19 14:01:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93774055] [2024-02-19 14:01:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93774055] [2024-02-19 14:01:38,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93774055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:38,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:01:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684756892] [2024-02-19 14:01:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,727 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:01:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:01:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:01:38,729 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:38,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 52 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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) [2024-02-19 14:01:38,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:38,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,847 INFO L124 PetriNetUnfolderBase]: 189/412 cut-off events. [2024-02-19 14:01:38,847 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2024-02-19 14:01:38,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 412 events. 189/412 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1661 event pairs, 45 based on Foata normal form. 10/394 useless extension candidates. Maximal degree in co-relation 1508. Up to 355 conditions per place. [2024-02-19 14:01:38,849 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 42 selfloop transitions, 3 changer transitions 17/67 dead transitions. [2024-02-19 14:01:38,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 660 flow [2024-02-19 14:01:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:01:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:01:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-02-19 14:01:38,851 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-02-19 14:01:38,852 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-02-19 14:01:38,853 INFO L507 AbstractCegarLoop]: Abstraction has has 42 places, 67 transitions, 660 flow [2024-02-19 14:01:38,853 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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) [2024-02-19 14:01:38,853 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,853 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,854 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:01:38,854 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 395729065, now seen corresponding path program 1 times [2024-02-19 14:01:38,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673732059] [2024-02-19 14:01:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673732059] [2024-02-19 14:01:38,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673732059] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:38,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564950687] [2024-02-19 14:01:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:38,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:38,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:01:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:39,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:01:39,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564950687] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:39,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-02-19 14:01:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344422292] [2024-02-19 14:01:39,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:39,106 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:01:39,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:01:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:01:39,107 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:39,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 67 transitions, 660 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:39,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:39,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:39,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:39,224 INFO L124 PetriNetUnfolderBase]: 219/472 cut-off events. [2024-02-19 14:01:39,224 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-02-19 14:01:39,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 472 events. 219/472 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1860 event pairs, 45 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 2162. Up to 415 conditions per place. [2024-02-19 14:01:39,226 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 55 selfloop transitions, 5 changer transitions 20/85 dead transitions. [2024-02-19 14:01:39,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 1009 flow [2024-02-19 14:01:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:01:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:01:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-02-19 14:01:39,228 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4186991869918699 [2024-02-19 14:01:39,229 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-02-19 14:01:39,229 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 85 transitions, 1009 flow [2024-02-19 14:01:39,229 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:39,229 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:39,229 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:39,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:39,444 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:39,445 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:39,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:39,445 INFO L85 PathProgramCache]: Analyzing trace with hash -977352800, now seen corresponding path program 2 times [2024-02-19 14:01:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529995067] [2024-02-19 14:01:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529995067] [2024-02-19 14:01:39,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529995067] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:39,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329911281] [2024-02-19 14:01:39,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:01:39,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:39,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:39,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:39,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:01:39,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:01:39,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:39,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:01:39,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329911281] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:39,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:39,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-02-19 14:01:39,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712998993] [2024-02-19 14:01:39,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:39,762 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 14:01:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 14:01:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:01:39,763 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:39,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 85 transitions, 1009 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:39,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:39,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:39,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:39,957 INFO L124 PetriNetUnfolderBase]: 279/592 cut-off events. [2024-02-19 14:01:39,957 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2024-02-19 14:01:39,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 592 events. 279/592 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2272 event pairs, 45 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 3362. Up to 535 conditions per place. [2024-02-19 14:01:39,960 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 79 selfloop transitions, 11 changer transitions 26/121 dead transitions. [2024-02-19 14:01:39,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 121 transitions, 1691 flow [2024-02-19 14:01:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:01:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:01:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-02-19 14:01:39,962 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-02-19 14:01:39,963 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-02-19 14:01:39,963 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 121 transitions, 1691 flow [2024-02-19 14:01:39,963 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:39,963 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:39,963 INFO L234 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:39,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:40,175 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-02-19 14:01:40,175 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:40,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash 550042368, now seen corresponding path program 3 times [2024-02-19 14:01:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:40,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355813703] [2024-02-19 14:01:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:40,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355813703] [2024-02-19 14:01:40,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355813703] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63159201] [2024-02-19 14:01:40,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:01:40,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:40,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:40,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:40,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:01:45,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-02-19 14:01:45,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:45,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:01:45,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:45,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63159201] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:45,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-02-19 14:01:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628782452] [2024-02-19 14:01:45,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:45,835 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:01:45,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:01:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:01:45,839 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:45,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 121 transitions, 1691 flow. Second operand has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:45,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:45,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:45,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:46,194 INFO L124 PetriNetUnfolderBase]: 399/832 cut-off events. [2024-02-19 14:01:46,194 INFO L125 PetriNetUnfolderBase]: For 943/943 co-relation queries the response was YES. [2024-02-19 14:01:46,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 832 events. 399/832 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3106 event pairs, 45 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 5774. Up to 775 conditions per place. [2024-02-19 14:01:46,199 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 127 selfloop transitions, 23 changer transitions 38/193 dead transitions. [2024-02-19 14:01:46,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 193 transitions, 3111 flow [2024-02-19 14:01:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-19 14:01:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-19 14:01:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 364 transitions. [2024-02-19 14:01:46,201 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3699186991869919 [2024-02-19 14:01:46,202 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2024-02-19 14:01:46,202 INFO L507 AbstractCegarLoop]: Abstraction has has 81 places, 193 transitions, 3111 flow [2024-02-19 14:01:46,202 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:46,203 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:46,203 INFO L234 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:46,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:46,417 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:46,418 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:46,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1997747638, now seen corresponding path program 4 times [2024-02-19 14:01:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:46,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951099419] [2024-02-19 14:01:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951099419] [2024-02-19 14:01:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951099419] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391892445] [2024-02-19 14:01:47,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:01:47,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:47,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:47,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:01:47,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:01:47,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:47,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-19 14:01:47,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:47,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:48,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391892445] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:48,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:48,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-02-19 14:01:48,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460254141] [2024-02-19 14:01:48,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:48,139 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-02-19 14:01:48,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-02-19 14:01:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-02-19 14:01:48,141 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:48,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 193 transitions, 3111 flow. Second operand has 49 states, 49 states have (on average 9.326530612244898) internal successors, (457), 49 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:48,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:48,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:48,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:48,824 INFO L124 PetriNetUnfolderBase]: 639/1312 cut-off events. [2024-02-19 14:01:48,824 INFO L125 PetriNetUnfolderBase]: For 1261/1261 co-relation queries the response was YES. [2024-02-19 14:01:48,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11482 conditions, 1312 events. 639/1312 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4755 event pairs, 45 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 10850. Up to 1255 conditions per place. [2024-02-19 14:01:48,832 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 223 selfloop transitions, 47 changer transitions 62/337 dead transitions. [2024-02-19 14:01:48,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 337 transitions, 6151 flow [2024-02-19 14:01:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-19 14:01:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-19 14:01:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 712 transitions. [2024-02-19 14:01:48,835 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3617886178861789 [2024-02-19 14:01:48,835 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-02-19 14:01:48,836 INFO L507 AbstractCegarLoop]: Abstraction has has 128 places, 337 transitions, 6151 flow [2024-02-19 14:01:48,836 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 9.326530612244898) internal successors, (457), 49 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:48,836 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:48,836 INFO L234 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:48,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-19 14:01:49,049 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:49,050 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:49,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash 666012106, now seen corresponding path program 5 times [2024-02-19 14:01:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:49,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643774745] [2024-02-19 14:01:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:49,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643774745] [2024-02-19 14:01:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643774745] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047293080] [2024-02-19 14:01:51,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:01:51,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:51,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:51,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15