./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:20:17,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:20:17,319 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-23 06:20:17,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:20:17,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:20:17,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:20:17,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:20:17,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:20:17,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:20:17,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:20:17,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:20:17,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:20:17,361 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:20:17,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:20:17,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:20:17,363 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 06:20:17,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:20:17,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 06:20:17,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:20:17,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:20:17,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:20:17,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:20:17,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 06:20:17,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:20:17,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:20:17,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:20:17,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:20:17,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:20:17,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:20:17,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:20:17,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:20:17,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:20:17,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:20:17,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:20:17,369 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-23 06:20:17,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:20:17,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:20:17,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-23 06:20:17,370 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:20:17,370 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-23 06:20:17,371 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-23 06:20:17,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2023-11-23 06:20:17,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:20:17,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:20:17,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:20:17,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:20:17,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:20:17,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-11-23 06:20:18,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:20:19,133 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:20:19,134 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-11-23 06:20:19,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7b3417d00/dbea473d824646fc99b0cd537f548e59/FLAGc661c7157 [2023-11-23 06:20:19,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7b3417d00/dbea473d824646fc99b0cd537f548e59 [2023-11-23 06:20:19,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:20:19,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:20:19,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:20:19,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:20:19,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:20:19,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac2c658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19, skipping insertion in model container [2023-11-23 06:20:19,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,191 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:20:19,341 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c[2500,2513] [2023-11-23 06:20:19,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:20:19,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:20:19,379 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c[2500,2513] [2023-11-23 06:20:19,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:20:19,397 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:20:19,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19 WrapperNode [2023-11-23 06:20:19,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:20:19,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:20:19,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:20:19,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:20:19,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,436 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 146 [2023-11-23 06:20:19,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:20:19,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:20:19,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:20:19,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:20:19,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,485 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:20:19,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:20:19,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:20:19,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:20:19,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (1/1) ... [2023-11-23 06:20:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:20:19,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:19,540 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) [2023-11-23 06:20:19,566 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 [2023-11-23 06:20:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:20:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 06:20:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 06:20:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 06:20:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 06:20:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 06:20:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:20:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 06:20:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:20:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:20:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:20:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 06:20:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:20:19,597 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 06:20:19,680 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:20:19,682 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:20:19,928 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:20:20,246 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:20:20,246 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 06:20:20,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:20:20 BoogieIcfgContainer [2023-11-23 06:20:20,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:20:20,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:20:20,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:20:20,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:20:20,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:20:19" (1/3) ... [2023-11-23 06:20:20,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a9c052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:20:20, skipping insertion in model container [2023-11-23 06:20:20,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:20:19" (2/3) ... [2023-11-23 06:20:20,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a9c052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:20:20, skipping insertion in model container [2023-11-23 06:20:20,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:20:20" (3/3) ... [2023-11-23 06:20:20,260 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2023-11-23 06:20:20,269 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 06:20:20,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:20:20,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:20:20,280 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 06:20:20,339 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 06:20:20,388 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:20:20,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 06:20:20,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:20,393 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) [2023-11-23 06:20:20,398 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 [2023-11-23 06:20:20,433 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 06:20:20,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-23 06:20:20,450 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3886bd18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:20:20,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 06:20:20,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:20:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:20:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -701037702, now seen corresponding path program 1 times [2023-11-23 06:20:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:20:20,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324484418] [2023-11-23 06:20:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:20:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:20:21,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:20:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324484418] [2023-11-23 06:20:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324484418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:20:21,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:20:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 06:20:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083934443] [2023-11-23 06:20:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:20:21,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:20:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:20:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:20:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:20:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:21,094 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 06:20:21,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 06:20:21,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:21,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:20:21,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:20:21,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:20:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash -973005165, now seen corresponding path program 1 times [2023-11-23 06:20:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:20:21,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804865417] [2023-11-23 06:20:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:21,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:20:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:20:21,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:20:21,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804865417] [2023-11-23 06:20:21,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804865417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:20:21,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904343343] [2023-11-23 06:20:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:21,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:21,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:20:21,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 06:20:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:21,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 06:20:21,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:20:22,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 06:20:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:20:22,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:20:22,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:20:22,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 37 [2023-11-23 06:20:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:20:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904343343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:20:22,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:20:22,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-11-23 06:20:22,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439798751] [2023-11-23 06:20:22,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:20:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 06:20:22,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:20:22,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 06:20:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:20:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:22,453 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 06:20:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 06:20:22,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:22,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:22,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 06:20:22,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 06:20:22,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:20:22,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:20:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1766910902, now seen corresponding path program 1 times [2023-11-23 06:20:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:20:22,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124602351] [2023-11-23 06:20:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:20:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:20:23,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:20:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124602351] [2023-11-23 06:20:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124602351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:20:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747337745] [2023-11-23 06:20:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:23,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:23,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:20:23,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 06:20:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:23,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 06:20:23,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:20:24,408 INFO L349 Elim1Store]: treesize reduction 43, result has 18.9 percent of original size [2023-11-23 06:20:24,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 64 [2023-11-23 06:20:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:20:24,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:20:24,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:20:24,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 157 treesize of output 165 [2023-11-23 06:20:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:20:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747337745] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:20:26,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:20:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 28 [2023-11-23 06:20:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355098212] [2023-11-23 06:20:26,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:20:26,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 06:20:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:20:26,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 06:20:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:20:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:26,437 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 06:20:26,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 06:20:26,438 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:26,438 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:26,438 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:20:26,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:20:26,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:26,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:20:26,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:20:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -107459075, now seen corresponding path program 2 times [2023-11-23 06:20:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:20:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816448657] [2023-11-23 06:20:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:20:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:20:28,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:20:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816448657] [2023-11-23 06:20:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816448657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:20:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120127607] [2023-11-23 06:20:28,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:20:28,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:28,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:28,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:20:28,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 06:20:28,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:20:28,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:20:28,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 06:20:28,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:20:28,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:20:28,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 71 [2023-11-23 06:20:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:20:28,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:20:28,930 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-23 06:20:28,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-11-23 06:20:29,008 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2023-11-23 06:20:29,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 61 [2023-11-23 06:20:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 06:20:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120127607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:20:29,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:20:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 28 [2023-11-23 06:20:29,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461340677] [2023-11-23 06:20:29,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:20:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 06:20:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:20:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 06:20:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:20:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:29,121 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 06:20:29,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 06:20:29,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:29,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:29,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:20:29,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:20:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:20:29,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 06:20:30,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:30,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:20:30,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:20:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2100193803, now seen corresponding path program 3 times [2023-11-23 06:20:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:20:30,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19206874] [2023-11-23 06:20:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:20:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:20:30,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:20:30,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19206874] [2023-11-23 06:20:30,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19206874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:20:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308306513] [2023-11-23 06:20:30,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:20:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:30,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:30,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:20:30,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 06:20:30,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 06:20:30,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:20:30,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 06:20:30,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:20:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:20:30,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:20:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:20:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308306513] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:20:31,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:20:31,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2023-11-23 06:20:31,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477350971] [2023-11-23 06:20:31,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:20:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 06:20:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:20:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 06:20:31,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:20:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:31,180 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 06:20:31,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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) [2023-11-23 06:20:31,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:31,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:31,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:20:31,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:20:31,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:20:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:20:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 06:20:32,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 06:20:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:33,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:20:33,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:20:33,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2058062751, now seen corresponding path program 4 times [2023-11-23 06:20:33,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:20:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447404694] [2023-11-23 06:20:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:20:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:20:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:20:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:20:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:20:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447404694] [2023-11-23 06:20:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447404694] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:20:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850466103] [2023-11-23 06:20:33,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 06:20:33,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:20:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:20:33,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:20:33,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 06:20:33,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 06:20:33,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:20:33,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 06:20:33,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:20:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:20:34,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:20:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:20:35,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850466103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:20:35,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:20:35,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 36 [2023-11-23 06:20:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189195561] [2023-11-23 06:20:35,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:20:35,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 06:20:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:20:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 06:20:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 06:20:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:20:35,215 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 06:20:35,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 06:20:35,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:20:35,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:20:35,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:20:35,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:20:35,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2023-11-23 06:20:35,215 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:21:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:21:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:21:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:21:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:21:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 06:21:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-23 06:21:27,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 06:21:27,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:21:27,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 06:21:27,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:21:27,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1845891410, now seen corresponding path program 5 times [2023-11-23 06:21:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:21:27,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525403001] [2023-11-23 06:21:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:21:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:21:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:21:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:21:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:21:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525403001] [2023-11-23 06:21:29,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525403001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:21:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221571048] [2023-11-23 06:21:29,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 06:21:29,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:21:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 06:21:29,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:21:29,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 06:22:13,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-23 06:22:13,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:22:13,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 163 conjunts are in the unsatisfiable core [2023-11-23 06:22:13,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:22:13,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:22:13,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:22:14,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:22:14,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:22:26,590 INFO L349 Elim1Store]: treesize reduction 1438, result has 14.5 percent of original size [2023-11-23 06:22:26,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 41 new quantified variables, introduced 210 case distinctions, treesize of input 577 treesize of output 383 [2023-11-23 06:22:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:22:28,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:24:26,361 WARN L293 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 06:24:56,943 WARN L293 SmtUtils]: Spent 8.87s on a formula simplification that was a NOOP. DAG size: 204 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 06:25:45,482 WARN L293 SmtUtils]: Spent 15.29s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 06:27:02,012 WARN L293 SmtUtils]: Spent 19.57s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 06:28:44,292 WARN L293 SmtUtils]: Spent 29.70s on a formula simplification that was a NOOP. DAG size: 231 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15