./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking FORWARD -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking FORWARD -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-17 18:44:06,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-17 18:44:06,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-17 18:44:06,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-17 18:44:06,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-17 18:44:06,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-17 18:44:06,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-17 18:44:06,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-17 18:44:06,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-17 18:44:06,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-17 18:44:06,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-17 18:44:06,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-17 18:44:06,698 INFO L153 SettingsManager]: * Use SBE=true [2024-10-17 18:44:06,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-17 18:44:06,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-17 18:44:06,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-17 18:44:06,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-17 18:44:06,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-17 18:44:06,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-17 18:44:06,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-17 18:44:06,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-17 18:44:06,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-17 18:44:06,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-17 18:44:06,704 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-17 18:44:06,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-17 18:44:06,705 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-17 18:44:06,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-17 18:44:06,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-17 18:44:06,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-17 18:44:06,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-17 18:44:06,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 18:44:06,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-17 18:44:06,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-17 18:44:06,707 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-17 18:44:06,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-17 18:44:06,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-17 18:44:06,708 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-17 18:44:06,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-17 18:44:06,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-17 18:44:06,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-17 18:44:06,709 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-17 18:44:06,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> FORWARD [2024-10-17 18:44:06,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-17 18:44:06,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-17 18:44:06,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-17 18:44:06,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-17 18:44:06,987 INFO L274 PluginConnector]: CDTParser initialized [2024-10-17 18:44:06,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-10-17 18:44:08,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-17 18:44:08,622 INFO L384 CDTParser]: Found 1 translation units. [2024-10-17 18:44:08,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-10-17 18:44:08,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c4a310f90/232fd714937e475b8eb2a4eff35c4528/FLAG25154f9c0 [2024-10-17 18:44:08,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c4a310f90/232fd714937e475b8eb2a4eff35c4528 [2024-10-17 18:44:08,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-17 18:44:08,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-17 18:44:08,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-17 18:44:08,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-17 18:44:08,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-17 18:44:08,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 06:44:08" (1/1) ... [2024-10-17 18:44:08,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c35e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:08, skipping insertion in model container [2024-10-17 18:44:08,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 06:44:08" (1/1) ... [2024-10-17 18:44:08,728 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-17 18:44:09,162 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2024-10-17 18:44:09,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 18:44:09,226 INFO L200 MainTranslator]: Completed pre-run [2024-10-17 18:44:09,313 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2024-10-17 18:44:09,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 18:44:09,409 INFO L204 MainTranslator]: Completed translation [2024-10-17 18:44:09,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09 WrapperNode [2024-10-17 18:44:09,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-17 18:44:09,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-17 18:44:09,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-17 18:44:09,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-17 18:44:09,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,474 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 213 [2024-10-17 18:44:09,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-17 18:44:09,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-17 18:44:09,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-17 18:44:09,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-17 18:44:09,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-17 18:44:09,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-17 18:44:09,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-17 18:44:09,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-17 18:44:09,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (1/1) ... [2024-10-17 18:44:09,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 18:44:09,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:09,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-10-17 18:44:09,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-10-17 18:44:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-17 18:44:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-17 18:44:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-17 18:44:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-17 18:44:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-17 18:44:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-17 18:44:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-17 18:44:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-17 18:44:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-17 18:44:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-17 18:44:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-17 18:44:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-17 18:44:09,619 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-17 18:44:09,782 INFO L238 CfgBuilder]: Building ICFG [2024-10-17 18:44:09,784 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-17 18:44:10,094 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-17 18:44:10,094 INFO L287 CfgBuilder]: Performing block encoding [2024-10-17 18:44:10,273 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-17 18:44:10,276 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-17 18:44:10,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 06:44:10 BoogieIcfgContainer [2024-10-17 18:44:10,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-17 18:44:10,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-17 18:44:10,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-17 18:44:10,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-17 18:44:10,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 06:44:08" (1/3) ... [2024-10-17 18:44:10,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc37428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 06:44:10, skipping insertion in model container [2024-10-17 18:44:10,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:44:09" (2/3) ... [2024-10-17 18:44:10,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc37428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 06:44:10, skipping insertion in model container [2024-10-17 18:44:10,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 06:44:10" (3/3) ... [2024-10-17 18:44:10,286 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2024-10-17 18:44:10,301 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-17 18:44:10,301 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-17 18:44:10,302 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-17 18:44:10,351 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-17 18:44:10,395 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:44:10,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:44:10,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:10,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:44:10,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-10-17 18:44:10,494 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:44:10,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:10,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2024-10-17 18:44:10,523 INFO L333 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, 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;@35a2af27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:44:10,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 18:44:11,253 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:11,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1947151098, now seen corresponding path program 1 times [2024-10-17 18:44:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958766927] [2024-10-17 18:44:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 18:44:11,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:11,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958766927] [2024-10-17 18:44:11,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958766927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:44:11,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:44:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:44:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340988120] [2024-10-17 18:44:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:44:11,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:44:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:44:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:44:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:11,547 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:11,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) 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) [2024-10-17 18:44:11,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:14,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-17 18:44:14,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:14,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1393481553, now seen corresponding path program 1 times [2024-10-17 18:44:14,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:14,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577453096] [2024-10-17 18:44:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:14,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577453096] [2024-10-17 18:44:14,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577453096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:14,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664382125] [2024-10-17 18:44:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:14,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:14,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:14,298 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) [2024-10-17 18:44:14,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-17 18:44:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:14,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:44:14,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:14,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:14,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664382125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:14,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:14,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:44:14,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136716999] [2024-10-17 18:44:14,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:14,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:44:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:44:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:44:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:14,451 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:14,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:14,452 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:14,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-17 18:44:14,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-17 18:44:14,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:14,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash -121528289, now seen corresponding path program 2 times [2024-10-17 18:44:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888933521] [2024-10-17 18:44:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:15,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888933521] [2024-10-17 18:44:15,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888933521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:15,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872393002] [2024-10-17 18:44:15,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:44:15,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:15,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:15,010 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) [2024-10-17 18:44:15,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-17 18:44:15,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:44:15,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:44:15,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:44:15,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:15,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872393002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:15,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:44:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990382234] [2024-10-17 18:44:15,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:15,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:44:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:44:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:44:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:15,177 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:15,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:15,177 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:15,179 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:15,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-17 18:44:15,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:15,512 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:15,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -346958305, now seen corresponding path program 3 times [2024-10-17 18:44:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161218193] [2024-10-17 18:44:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161218193] [2024-10-17 18:44:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161218193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057262085] [2024-10-17 18:44:15,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 18:44:15,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:15,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:15,960 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) [2024-10-17 18:44:15,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-17 18:44:16,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-17 18:44:16,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:44:16,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 18:44:16,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:16,081 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 7 treesize of output 6 [2024-10-17 18:44:16,156 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:44:16,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-10-17 18:44:16,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:44:16,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:44:16,285 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 31 treesize of output 25 [2024-10-17 18:44:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:16,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:20,370 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_140 (Array Int Int)) (|t_funThread1of1ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_140) |c_t_funThread1of1ForFork0_~p~0#1.base|) |t_funThread1of1ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:44:22,390 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_140 (Array Int Int)) (|t_funThread1of1ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_140) |c_~#a~0.base|) |t_funThread1of1ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:44:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 2 not checked. [2024-10-17 18:44:22,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057262085] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:22,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:22,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-10-17 18:44:22,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819173138] [2024-10-17 18:44:22,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:22,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-17 18:44:22,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-17 18:44:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=170, Unknown=4, NotChecked=54, Total=272 [2024-10-17 18:44:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:22,500 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:22,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:22,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:22,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:22,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:22,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-17 18:44:23,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-17 18:44:23,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:23,683 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:23,823 INFO L349 Elim1Store]: treesize reduction 11, result has 26.7 percent of original size [2024-10-17 18:44:23,824 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 41 treesize of output 33 [2024-10-17 18:44:25,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1686728550, now seen corresponding path program 1 times [2024-10-17 18:44:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:25,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:26,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-17 18:44:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-17 18:44:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-17 18:44:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:26,118 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:26,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-10-17 18:44:26,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-17 18:44:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:44:26,476 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 18:44:26,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable5 [2024-10-17 18:44:26,488 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-17 18:44:26,490 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE (1/2) [2024-10-17 18:44:26,493 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:44:26,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:44:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:26,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:44:26,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2024-10-17 18:44:26,538 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:44:26,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:26,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 18:44:26,543 INFO L333 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, 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;@35a2af27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:44:26,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 18:44:26,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:44:26,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2015966958, now seen corresponding path program 1 times [2024-10-17 18:44:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374498649] [2024-10-17 18:44:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374498649] [2024-10-17 18:44:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374498649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:44:26,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:44:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:44:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386665396] [2024-10-17 18:44:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:44:26,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:44:26,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:44:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:44:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:26,783 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:26,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:26,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:26,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-17 18:44:26,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:44:26,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1542578883, now seen corresponding path program 1 times [2024-10-17 18:44:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:26,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005307913] [2024-10-17 18:44:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:26,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:26,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:26,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005307913] [2024-10-17 18:44:26,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005307913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:26,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918585405] [2024-10-17 18:44:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:26,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:26,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:26,917 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) [2024-10-17 18:44:26,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-17 18:44:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:26,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:44:26,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:27,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918585405] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:27,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:27,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:44:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732347521] [2024-10-17 18:44:27,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:27,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:44:27,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:44:27,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:44:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:27,034 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:27,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:27,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:27,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:27,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-17 18:44:27,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:27,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:44:27,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash 302486067, now seen corresponding path program 2 times [2024-10-17 18:44:27,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:27,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788208379] [2024-10-17 18:44:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:27,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788208379] [2024-10-17 18:44:27,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788208379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185449363] [2024-10-17 18:44:27,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:44:27,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:27,369 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) [2024-10-17 18:44:27,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-17 18:44:27,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:44:27,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:44:27,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:44:27,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:27,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:44:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185449363] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:27,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:27,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:44:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291620513] [2024-10-17 18:44:27,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:27,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:44:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:44:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:44:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:27,552 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:27,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:27,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:27,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:27,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:27,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-17 18:44:27,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-17 18:44:27,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:44:27,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash 287492147, now seen corresponding path program 3 times [2024-10-17 18:44:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:27,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189488648] [2024-10-17 18:44:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:44:27,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:44:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:44:27,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 18:44:27,858 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 18:44:27,859 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 18:44:27,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-17 18:44:27,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-17 18:44:27,861 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 18:44:27,861 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2024-10-17 18:44:27,862 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 18:44:27,862 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-17 18:44:27,882 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-17 18:44:27,887 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:44:27,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:44:27,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:27,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:44:27,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-10-17 18:44:27,937 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:44:27,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:27,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2024-10-17 18:44:27,940 INFO L333 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, 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;@35a2af27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:44:27,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 18:44:30,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:30,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2118392455, now seen corresponding path program 1 times [2024-10-17 18:44:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:30,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859109141] [2024-10-17 18:44:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:30,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-17 18:44:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859109141] [2024-10-17 18:44:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859109141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:44:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:44:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:44:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297926731] [2024-10-17 18:44:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:44:30,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:44:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:44:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:44:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:30,164 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:30,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:30,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:37,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-17 18:44:37,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:37,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash 848923231, now seen corresponding path program 1 times [2024-10-17 18:44:37,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:37,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382127456] [2024-10-17 18:44:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:44:37,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382127456] [2024-10-17 18:44:37,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382127456] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208675323] [2024-10-17 18:44:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:37,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:37,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:44:37,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-17 18:44:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:37,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:44:37,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:44:37,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:44:38,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208675323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:38,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:38,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:44:38,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255647403] [2024-10-17 18:44:38,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:38,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:44:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:44:38,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:44:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:38,015 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:38,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:38,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:38,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:39,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-17 18:44:39,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:39,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:39,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:39,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1230378842, now seen corresponding path program 2 times [2024-10-17 18:44:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:39,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225422168] [2024-10-17 18:44:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:44:39,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225422168] [2024-10-17 18:44:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225422168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:39,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694930034] [2024-10-17 18:44:39,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:44:39,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:39,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:39,358 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:44:39,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-17 18:44:39,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:44:39,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:44:39,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:44:39,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:44:39,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:44:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694930034] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:39,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:39,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:44:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112736174] [2024-10-17 18:44:39,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:39,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:44:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:44:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:44:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:39,558 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:39,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:39,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:39,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:39,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:40,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-17 18:44:40,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-17 18:44:40,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:40,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1860084218, now seen corresponding path program 3 times [2024-10-17 18:44:40,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:40,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985374728] [2024-10-17 18:44:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:40,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:44:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985374728] [2024-10-17 18:44:41,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985374728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:44:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978165047] [2024-10-17 18:44:41,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 18:44:41,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:41,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:44:41,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:44:41,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-17 18:44:41,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-17 18:44:41,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:44:41,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 18:44:41,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:44:41,404 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 7 treesize of output 6 [2024-10-17 18:44:41,497 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:44:41,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-10-17 18:44:41,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:44:41,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:44:41,659 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 31 treesize of output 25 [2024-10-17 18:44:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:41,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:44:49,760 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_460 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_460) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:44:51,785 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_460 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_460) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:44:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 3 not checked. [2024-10-17 18:44:51,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978165047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:44:51,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:44:51,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-10-17 18:44:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009228876] [2024-10-17 18:44:51,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:44:51,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-17 18:44:51,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:44:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-17 18:44:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=169, Unknown=5, NotChecked=54, Total=272 [2024-10-17 18:44:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:51,913 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:51,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:51,914 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:51,914 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:51,914 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:51,914 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:44:54,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-17 18:44:55,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:44:55,105 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:55,211 INFO L349 Elim1Store]: treesize reduction 7, result has 36.4 percent of original size [2024-10-17 18:44:55,211 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 29 treesize of output 25 [2024-10-17 18:44:55,249 INFO L85 PathProgramCache]: Analyzing trace with hash 950526111, now seen corresponding path program 1 times [2024-10-17 18:44:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:55,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:44:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:44:55,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:44:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:44:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:44:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:55,423 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:44:55,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:44:55,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:55,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:55,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:55,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:44:55,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:44:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:44:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:44:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:44:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:44:57,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,SelfDestructingSolverStorable15 [2024-10-17 18:44:57,059 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:44:57,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:44:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -850281953, now seen corresponding path program 1 times [2024-10-17 18:44:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:44:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019960525] [2024-10-17 18:44:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:44:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:44:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 18:45:00,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:00,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019960525] [2024-10-17 18:45:00,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019960525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:45:00,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038082593] [2024-10-17 18:45:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:45:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:00,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:45:00,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-17 18:45:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:01,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-17 18:45:01,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:45:01,106 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 7 treesize of output 6 [2024-10-17 18:45:01,202 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:45:01,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-10-17 18:45:01,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:01,300 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 13 treesize of output 9 [2024-10-17 18:45:01,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:01,456 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:45:01,456 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 19 treesize of output 11 [2024-10-17 18:45:01,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:01,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 22 treesize of output 17 [2024-10-17 18:45:01,696 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 38 treesize of output 30 [2024-10-17 18:45:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:01,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:45:02,149 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_621 (Array Int Int)) (v_ArrVal_623 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621))) (store .cse0 |c_t_funThread2of2ForFork0_~p~0#1.base| (store (select .cse0 |c_t_funThread2of2ForFork0_~p~0#1.base|) |c_t_funThread2of2ForFork0_~p~0#1.offset| v_ArrVal_623))) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:02,335 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 18 treesize of output 12 [2024-10-17 18:45:02,348 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|t_funThread2of2ForFork0_~p~0#1.offset| Int) (v_ArrVal_621 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0) (= |t_funThread1of2ForFork0_~p~0#1.offset| |t_funThread2of2ForFork0_~p~0#1.offset|))) (or (forall ((v_ArrVal_621 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) (= |c_~#a~0.base| |c_t_funThread1of2ForFork0_~p~0#1.base|))) is different from false [2024-10-17 18:45:02,353 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_621 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 6 not checked. [2024-10-17 18:45:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038082593] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:45:02,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:45:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 10] total 36 [2024-10-17 18:45:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781287148] [2024-10-17 18:45:02,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:45:02,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-17 18:45:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:02,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-17 18:45:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=986, Unknown=6, NotChecked=198, Total=1332 [2024-10-17 18:45:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:02,488 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:02,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 36 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-17 18:45:07,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-17 18:45:07,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-17 18:45:07,498 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:45:07,638 INFO L349 Elim1Store]: treesize reduction 11, result has 26.7 percent of original size [2024-10-17 18:45:07,639 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 41 treesize of output 33 [2024-10-17 18:45:09,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1455897321, now seen corresponding path program 1 times [2024-10-17 18:45:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:09,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:09,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-17 18:45:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-17 18:45:09,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-17 18:45:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:09,860 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:09,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:09,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:09,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:09,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:09,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:09,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:09,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-17 18:45:09,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:11,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,SelfDestructingSolverStorable17 [2024-10-17 18:45:11,361 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:45:11,427 INFO L349 Elim1Store]: treesize reduction 9, result has 30.8 percent of original size [2024-10-17 18:45:11,427 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 586 treesize of output 536 [2024-10-17 18:45:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1144700928, now seen corresponding path program 1 times [2024-10-17 18:45:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:11,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-17 18:45:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-17 18:45:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-17 18:45:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:11,679 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:11,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:11,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:11,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:11,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:11,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:11,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:11,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:11,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:11,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:45:12,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,SelfDestructingSolverStorable20 [2024-10-17 18:45:12,558 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:45:12,625 INFO L349 Elim1Store]: treesize reduction 9, result has 30.8 percent of original size [2024-10-17 18:45:12,625 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 1254 treesize of output 1156 [2024-10-17 18:45:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -408789770, now seen corresponding path program 1 times [2024-10-17 18:45:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:12,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:45:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:12,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 713166228, now seen corresponding path program 1 times [2024-10-17 18:45:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315671075] [2024-10-17 18:45:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:13,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315671075] [2024-10-17 18:45:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315671075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:45:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031528424] [2024-10-17 18:45:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:13,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:45:13,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:13,247 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:45:13,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-17 18:45:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:13,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-17 18:45:13,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:45:13,382 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 7 treesize of output 6 [2024-10-17 18:45:13,449 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:45:13,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-10-17 18:45:13,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:13,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:13,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:13,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 17 [2024-10-17 18:45:13,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 25 [2024-10-17 18:45:13,757 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 37 treesize of output 31 [2024-10-17 18:45:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:13,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:45:21,855 WARN L851 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_t_funThread2of2ForFork0_~p~0#1.base| (let ((.cse0 (select |c_#memory_int| |c_t_funThread2of2ForFork0_~p~0#1.base|))) (store .cse0 |c_t_funThread2of2ForFork0_~p~0#1.offset| (+ (- 1) (select .cse0 |c_t_funThread2of2ForFork0_~p~0#1.offset|))))) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:27,907 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_940 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_940) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:27,929 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_940 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_940) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 5 not checked. [2024-10-17 18:45:28,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031528424] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:45:28,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:45:28,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 21 [2024-10-17 18:45:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373718203] [2024-10-17 18:45:28,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:45:28,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-17 18:45:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-17 18:45:28,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=278, Unknown=6, NotChecked=108, Total=462 [2024-10-17 18:45:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:28,014 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:45:28,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:45:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-17 18:45:29,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-17 18:45:29,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21,SelfDestructingSolverStorable22 [2024-10-17 18:45:29,742 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:45:29,829 INFO L349 Elim1Store]: treesize reduction 7, result has 36.4 percent of original size [2024-10-17 18:45:29,830 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 601 treesize of output 533 [2024-10-17 18:45:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1719292063, now seen corresponding path program 1 times [2024-10-17 18:45:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:30,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:45:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:30,206 INFO L349 Elim1Store]: treesize reduction 9, result has 30.8 percent of original size [2024-10-17 18:45:30,210 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 674 treesize of output 624 [2024-10-17 18:45:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1796249872, now seen corresponding path program 1 times [2024-10-17 18:45:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:30,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:45:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:30,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash -270271532, now seen corresponding path program 2 times [2024-10-17 18:45:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:30,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518023398] [2024-10-17 18:45:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:30,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518023398] [2024-10-17 18:45:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518023398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:45:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843208396] [2024-10-17 18:45:30,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:45:30,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:45:30,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:30,856 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:45:30,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-17 18:45:31,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:45:31,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:45:31,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-17 18:45:31,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:45:31,027 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 7 treesize of output 6 [2024-10-17 18:45:31,108 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:45:31,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-10-17 18:45:31,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:31,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2024-10-17 18:45:31,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 17 [2024-10-17 18:45:31,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 25 [2024-10-17 18:45:31,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2024-10-17 18:45:31,520 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 37 treesize of output 31 [2024-10-17 18:45:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:45:31,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:45:43,617 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1130 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1130) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:45,625 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1130 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store (store |c_#memory_int| |c_t_funThread2of2ForFork0_~p~0#1.base| (let ((.cse0 (select |c_#memory_int| |c_t_funThread2of2ForFork0_~p~0#1.base|))) (store .cse0 |c_t_funThread2of2ForFork0_~p~0#1.offset| (+ (- 1) (select .cse0 |c_t_funThread2of2ForFork0_~p~0#1.offset|))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1130) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:45,642 WARN L851 $PredicateComparison]: unable to prove that (forall ((|t_funThread2of2ForFork0_~p~0#1.offset| Int) (v_ArrVal_1130 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store (store |c_#memory_int| |c_t_funThread2of2ForFork0_~p~0#1.base| (let ((.cse0 (select |c_#memory_int| |c_t_funThread2of2ForFork0_~p~0#1.base|))) (store .cse0 |t_funThread2of2ForFork0_~p~0#1.offset| (select .cse0 |t_funThread2of2ForFork0_~p~0#1.offset|)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1130) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:47,666 WARN L851 $PredicateComparison]: unable to prove that (forall ((|t_funThread2of2ForFork0_~p~0#1.offset| Int) (v_ArrVal_1130 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store (store |c_#memory_int| |c_~#a~0.base| (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|))) (store .cse0 |t_funThread2of2ForFork0_~p~0#1.offset| (select .cse0 |t_funThread2of2ForFork0_~p~0#1.offset|)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1130) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:49,725 WARN L851 $PredicateComparison]: unable to prove that (forall ((|t_funThread2of2ForFork0_~p~0#1.offset| Int) (v_ArrVal_1125 (Array Int Int)) (v_ArrVal_1130 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store (store |c_#memory_int| |c_~#a~0.base| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1125) |c_~#a~0.base|))) (store .cse0 |t_funThread2of2ForFork0_~p~0#1.offset| (select .cse0 |t_funThread2of2ForFork0_~p~0#1.offset|)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1130) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:51,750 WARN L851 $PredicateComparison]: unable to prove that (forall ((|t_funThread2of2ForFork0_~p~0#1.offset| Int) (v_ArrVal_1125 (Array Int Int)) (v_ArrVal_1130 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store (store |c_#memory_int| |c_~#a~0.base| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1125) |c_~#a~0.base|))) (store .cse0 |t_funThread2of2ForFork0_~p~0#1.offset| (select .cse0 |t_funThread2of2ForFork0_~p~0#1.offset|)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1130) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2024-10-17 18:45:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 7 not checked. [2024-10-17 18:45:51,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843208396] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:45:51,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:45:51,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2024-10-17 18:45:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842535709] [2024-10-17 18:45:51,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:45:51,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-17 18:45:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-17 18:45:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=278, Unknown=12, NotChecked=234, Total=600 [2024-10-17 18:45:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:51,961 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:51,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:51,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:51,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:51,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2024-10-17 18:45:51,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-17 18:45:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:45:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:45:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-17 18:45:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:55,992 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 18:45:56,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-17 18:45:56,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24,SelfDestructingSolverStorable25 [2024-10-17 18:45:56,199 INFO L414 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-17 18:45:56,199 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE (1/3) [2024-10-17 18:45:56,202 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:45:56,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:45:56,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:56,204 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:45:56,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-10-17 18:45:56,242 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:45:56,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:56,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 18:45:56,243 INFO L333 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, 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;@35a2af27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:45:56,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 18:45:56,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:45:56,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1656765356, now seen corresponding path program 1 times [2024-10-17 18:45:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:56,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066375237] [2024-10-17 18:45:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066375237] [2024-10-17 18:45:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066375237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:45:56,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:45:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:45:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047829561] [2024-10-17 18:45:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:45:56,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:45:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:45:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:45:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:56,837 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:56,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:56,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:57,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-17 18:45:57,214 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:45:57,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash 416744322, now seen corresponding path program 1 times [2024-10-17 18:45:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300282704] [2024-10-17 18:45:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:57,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:57,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300282704] [2024-10-17 18:45:57,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300282704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:45:57,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354981998] [2024-10-17 18:45:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:57,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:45:57,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:57,271 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:45:57,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-17 18:45:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:57,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:45:57,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:45:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:57,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:45:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:57,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354981998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:45:57,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:45:57,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:45:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669101744] [2024-10-17 18:45:57,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:45:57,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:45:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:45:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:45:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:57,471 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:57,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:57,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:57,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:57,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-17 18:45:57,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-17 18:45:57,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:45:57,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 382889499, now seen corresponding path program 2 times [2024-10-17 18:45:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:57,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062885623] [2024-10-17 18:45:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062885623] [2024-10-17 18:45:57,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062885623] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:45:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934303816] [2024-10-17 18:45:57,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:45:57,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:45:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:57,927 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:45:57,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-17 18:45:58,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:45:58,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:45:58,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:45:58,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:45:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:58,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:45:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:45:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934303816] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:45:58,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:45:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:45:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204072612] [2024-10-17 18:45:58,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:45:58,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:45:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:45:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:45:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:58,288 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:58,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:58,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:58,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:58,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:45:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:45:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:45:58,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-17 18:45:58,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-17 18:45:58,631 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:45:58,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1958107973, now seen corresponding path program 3 times [2024-10-17 18:45:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013507599] [2024-10-17 18:45:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:58,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:58,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:45:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:45:58,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 18:45:58,670 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 18:45:58,670 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 18:45:58,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-17 18:45:58,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-17 18:45:58,673 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 18:45:58,673 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/3) [2024-10-17 18:45:58,673 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 18:45:58,673 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-17 18:45:58,710 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-17 18:45:58,714 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:45:58,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:45:58,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:45:58,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:45:58,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2024-10-17 18:45:58,763 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:45:58,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:58,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 18:45:58,765 INFO L333 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, 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;@35a2af27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:45:58,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 18:45:59,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:45:59,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:45:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1167129937, now seen corresponding path program 1 times [2024-10-17 18:45:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:45:59,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235468801] [2024-10-17 18:45:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:45:59,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:45:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:45:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:45:59,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:45:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235468801] [2024-10-17 18:45:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235468801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:45:59,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:45:59,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:45:59,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072859630] [2024-10-17 18:45:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:45:59,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:45:59,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:45:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:45:59,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:45:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:45:59,575 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:45:59,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:45:59,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:00,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-17 18:46:00,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:00,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1748813281, now seen corresponding path program 1 times [2024-10-17 18:46:00,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:00,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400309481] [2024-10-17 18:46:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:46:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400309481] [2024-10-17 18:46:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400309481] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408438469] [2024-10-17 18:46:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:00,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:00,421 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:00,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-17 18:46:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:00,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:46:00,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:46:00,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:46:00,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408438469] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:00,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:00,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:46:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089326206] [2024-10-17 18:46:00,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:00,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:46:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:46:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:46:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:00,660 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:00,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 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) [2024-10-17 18:46:00,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:00,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:00,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-17 18:46:01,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:01,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:01,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1542454947, now seen corresponding path program 2 times [2024-10-17 18:46:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13658982] [2024-10-17 18:46:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:46:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13658982] [2024-10-17 18:46:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13658982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596860846] [2024-10-17 18:46:01,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:46:01,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:01,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:01,157 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:01,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-17 18:46:01,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:46:01,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:46:01,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:46:01,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:46:01,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:46:01,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596860846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:01,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:01,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:46:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746621767] [2024-10-17 18:46:01,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:01,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:46:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:46:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:46:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:01,522 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:01,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:01,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:01,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:01,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:01,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-17 18:46:01,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-17 18:46:01,963 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:01,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1777592861, now seen corresponding path program 3 times [2024-10-17 18:46:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567616723] [2024-10-17 18:46:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:46:01,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:46:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:46:02,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 18:46:02,042 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 18:46:02,042 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 18:46:02,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-17 18:46:02,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-17 18:46:02,044 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 18:46:02,044 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/4) [2024-10-17 18:46:02,044 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 18:46:02,044 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-17 18:46:02,076 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-17 18:46:02,079 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:46:02,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:46:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:02,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:46:02,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2024-10-17 18:46:02,129 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:46:02,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:02,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2024-10-17 18:46:02,130 INFO L333 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, 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;@35a2af27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:46:02,130 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 18:46:03,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:03,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash -869417293, now seen corresponding path program 1 times [2024-10-17 18:46:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503014955] [2024-10-17 18:46:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:03,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-17 18:46:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503014955] [2024-10-17 18:46:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503014955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:46:03,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:46:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:46:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549610714] [2024-10-17 18:46:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:46:03,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:46:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:46:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:46:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:03,429 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:03,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2024-10-17 18:46:03,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:28,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-17 18:46:28,674 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:28,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1447313742, now seen corresponding path program 1 times [2024-10-17 18:46:28,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:28,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311539969] [2024-10-17 18:46:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 18:46:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311539969] [2024-10-17 18:46:28,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311539969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872166617] [2024-10-17 18:46:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:28,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:28,753 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:28,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-17 18:46:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:28,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:46:28,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 18:46:28,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 18:46:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872166617] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:29,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:46:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116034982] [2024-10-17 18:46:29,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:29,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:46:29,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:46:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:46:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:29,018 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:29,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:29,018 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:29,018 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:38,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-17 18:46:38,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-17 18:46:38,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:38,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1302091798, now seen corresponding path program 2 times [2024-10-17 18:46:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347108296] [2024-10-17 18:46:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 18:46:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:38,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347108296] [2024-10-17 18:46:38,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347108296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:38,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215456177] [2024-10-17 18:46:38,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:46:38,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:38,787 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:38,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-17 18:46:39,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:46:39,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:46:39,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:46:39,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 18:46:39,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 18:46:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215456177] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:39,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:39,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:46:39,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510660222] [2024-10-17 18:46:39,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:39,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:46:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:46:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:46:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:39,220 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:39,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:39,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:39,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:39,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:48,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-17 18:46:49,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-17 18:46:49,038 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:49,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1655673494, now seen corresponding path program 3 times [2024-10-17 18:46:49,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:49,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276426590] [2024-10-17 18:46:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat