./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-08-08_07-59-58.files/protection-local/28-race_reach_10-ptrmunge_racefree.yml/witness.yml --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 7bc0c755
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i ./goblint.2024-08-08_07-59-58.files/protection-local/28-race_reach_10-ptrmunge_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false
--- Real Ultimate output ---
This is Ultimate 0.2.4-tmp.dk.goblint-validation-atomicfix-7bc0c75-m
[2024-08-23 19:42:46,264 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-08-23 19:42:46,349 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf
[2024-08-23 19:42:46,366 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-08-23 19:42:46,367 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-08-23 19:42:46,395 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-08-23 19:42:46,397 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-08-23 19:42:46,397 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-08-23 19:42:46,398 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-08-23 19:42:46,399 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-08-23 19:42:46,400 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-08-23 19:42:46,400 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-08-23 19:42:46,401 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-08-23 19:42:46,401 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-08-23 19:42:46,401 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-08-23 19:42:46,401 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-08-23 19:42:46,402 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-08-23 19:42:46,402 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-08-23 19:42:46,402 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-08-23 19:42:46,403 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-08-23 19:42:46,403 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-08-23 19:42:46,404 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-08-23 19:42:46,404 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-08-23 19:42:46,404 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-08-23 19:42:46,404 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-08-23 19:42:46,405 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-08-23 19:42:46,405 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-08-23 19:42:46,405 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-08-23 19:42:46,405 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-08-23 19:42:46,406 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-08-23 19:42:46,406 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-08-23 19:42:46,406 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-08-23 19:42:46,406 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-08-23 19:42:46,407 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-08-23 19:42:46,407 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-08-23 19:42:46,407 INFO  L153        SettingsManager]:  * DFS Order used in POR=LOOP_LOCKSTEP
[2024-08-23 19:42:46,408 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-08-23 19:42:46,408 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-08-23 19:42:46,408 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2024-08-23 19:42:46,409 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2024-08-23 19:42:46,409 INFO  L153        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2024-08-23 19:42:46,410 INFO  L153        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2024-08-23 19:42:46,410 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false
[2024-08-23 19:42:46,682 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-08-23 19:42:46,711 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-08-23 19:42:46,715 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-08-23 19:42:46,717 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-08-23 19:42:46,718 INFO  L274        PluginConnector]: CDTParser initialized
[2024-08-23 19:42:46,719 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i
[2024-08-23 19:42:48,186 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-08-23 19:42:48,424 INFO  L384              CDTParser]: Found 1 translation units.
[2024-08-23 19:42:48,425 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i
[2024-08-23 19:42:48,443 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b3a6f7231/507a6efe4f8d423aa8b2b32d0fe3340f/FLAG4833c0013
[2024-08-23 19:42:48,457 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b3a6f7231/507a6efe4f8d423aa8b2b32d0fe3340f
[2024-08-23 19:42:48,459 INFO  L270        PluginConnector]: Initializing Witness Parser...
[2024-08-23 19:42:48,460 INFO  L274        PluginConnector]: Witness Parser initialized
[2024-08-23 19:42:48,460 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/protection-local/28-race_reach_10-ptrmunge_racefree.yml/witness.yml
[2024-08-23 19:42:48,552 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-08-23 19:42:48,553 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-08-23 19:42:48,556 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-08-23 19:42:48,556 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-08-23 19:42:48,561 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-08-23 19:42:48,562 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 07:42:48" (1/2) ...
[2024-08-23 19:42:48,563 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563e07e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:42:48, skipping insertion in model container
[2024-08-23 19:42:48,563 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 07:42:48" (1/2) ...
[2024-08-23 19:42:48,564 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d10423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:42:48, skipping insertion in model container
[2024-08-23 19:42:48,565 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 07:42:48" (2/2) ...
[2024-08-23 19:42:48,565 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563e07e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:48, skipping insertion in model container
[2024-08-23 19:42:48,565 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 07:42:48" (2/2) ...
[2024-08-23 19:42:48,565 INFO  L83    nessWitnessExtractor]: Extracting all invariants from correctness witness
[2024-08-23 19:42:48,593 INFO  L95    edCorrectnessWitness]: Found the following entries in the witness:
[2024-08-23 19:42:48,594 INFO  L97    edCorrectnessWitness]: Location invariant before [L703-L703] (0 <= global1) && (0 <= global2)
[2024-08-23 19:42:48,594 INFO  L97    edCorrectnessWitness]: Location invariant before [L703-L703] (0 <= global1) && (0 <= global2)
[2024-08-23 19:42:48,596 INFO  L97    edCorrectnessWitness]: Location invariant before [L703-L703] (0 <= global2 && 1 <= global1) || (0 <= global1 && 1 <= global2)
[2024-08-23 19:42:48,643 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2024-08-23 19:42:48,974 INFO  L207          PostProcessor]: Analyzing one entry point: main
[2024-08-23 19:42:48,990 INFO  L202         MainTranslator]: Completed pre-run
Start Parsing Local
Start Parsing Local
Start Parsing Local
[2024-08-23 19:42:49,110 INFO  L207          PostProcessor]: Analyzing one entry point: main
[2024-08-23 19:42:49,158 INFO  L206         MainTranslator]: Completed translation
[2024-08-23 19:42:49,158 INFO  L201        PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49 WrapperNode
[2024-08-23 19:42:49,158 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-08-23 19:42:49,159 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-08-23 19:42:49,160 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-08-23 19:42:49,160 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-08-23 19:42:49,166 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,185 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,231 INFO  L138                Inliner]: procedures = 173, calls = 65, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 305
[2024-08-23 19:42:49,233 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-08-23 19:42:49,236 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-08-23 19:42:49,237 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-08-23 19:42:49,237 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-08-23 19:42:49,253 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,254 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,259 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,262 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,274 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,279 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,282 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,284 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,288 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-08-23 19:42:49,289 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-08-23 19:42:49,289 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-08-23 19:42:49,289 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-08-23 19:42:49,290 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (1/1) ...
[2024-08-23 19:42:49,297 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-08-23 19:42:49,308 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:49,322 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2024-08-23 19:42:49,324 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2024-08-23 19:42:49,354 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2024-08-23 19:42:49,354 INFO  L130     BoogieDeclarations]: Found specification of procedure t2_fun
[2024-08-23 19:42:49,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure t2_fun
[2024-08-23 19:42:49,355 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2024-08-23 19:42:49,355 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2024-08-23 19:42:49,355 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-08-23 19:42:49,355 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-08-23 19:42:49,355 INFO  L130     BoogieDeclarations]: Found specification of procedure t1_fun
[2024-08-23 19:42:49,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure t1_fun
[2024-08-23 19:42:49,355 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-08-23 19:42:49,356 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2024-08-23 19:42:49,356 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2024-08-23 19:42:49,356 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-08-23 19:42:49,356 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-08-23 19:42:49,358 WARN  L212             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-08-23 19:42:49,486 INFO  L243             CfgBuilder]: Building ICFG
[2024-08-23 19:42:49,487 INFO  L269             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-08-23 19:42:49,889 INFO  L288             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-08-23 19:42:49,890 INFO  L292             CfgBuilder]: Performing block encoding
[2024-08-23 19:42:50,159 INFO  L314             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-08-23 19:42:50,160 INFO  L319             CfgBuilder]: Removed 24 assume(true) statements.
[2024-08-23 19:42:50,161 INFO  L201        PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 07:42:50 BoogieIcfgContainer
[2024-08-23 19:42:50,161 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-08-23 19:42:50,164 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-08-23 19:42:50,165 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-08-23 19:42:50,168 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-08-23 19:42:50,168 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 07:42:48" (1/4) ...
[2024-08-23 19:42:50,169 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f50c305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 07:42:50, skipping insertion in model container
[2024-08-23 19:42:50,169 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 07:42:48" (2/4) ...
[2024-08-23 19:42:50,170 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f50c305 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 23.08 07:42:50, skipping insertion in model container
[2024-08-23 19:42:50,171 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:42:49" (3/4) ...
[2024-08-23 19:42:50,171 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f50c305 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 23.08 07:42:50, skipping insertion in model container
[2024-08-23 19:42:50,171 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 07:42:50" (4/4) ...
[2024-08-23 19:42:50,173 INFO  L112   eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i
[2024-08-23 19:42:50,192 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-08-23 19:42:50,193 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2024-08-23 19:42:50,193 INFO  L522   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-08-23 19:42:50,273 INFO  L144    ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2024-08-23 19:42:50,324 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:50,324 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2024-08-23 19:42:50,324 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:50,327 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2024-08-23 19:42:50,329 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2024-08-23 19:42:50,367 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2024-08-23 19:42:50,381 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread1of1ForFork0 ========
[2024-08-23 19:42:50,389 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@356892ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:50,389 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-08-23 19:42:50,644 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:50,650 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:50,650 INFO  L85        PathProgramCache]: Analyzing trace with hash -197089170, now seen corresponding path program 1 times
[2024-08-23 19:42:50,659 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:50,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680691737]
[2024-08-23 19:42:50,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:50,661 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:50,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:50,910 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-08-23 19:42:50,911 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:50,911 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680691737]
[2024-08-23 19:42:50,912 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680691737] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:42:50,913 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-08-23 19:42:50,913 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-08-23 19:42:50,914 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128579296]
[2024-08-23 19:42:50,915 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:42:50,919 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-08-23 19:42:50,919 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:50,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-08-23 19:42:50,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-08-23 19:42:50,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:50,947 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:50,948 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:50,948 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:51,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:51,090 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-08-23 19:42:51,090 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:51,091 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:51,091 INFO  L85        PathProgramCache]: Analyzing trace with hash -92991557, now seen corresponding path program 1 times
[2024-08-23 19:42:51,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:51,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920861231]
[2024-08-23 19:42:51,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:51,092 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:51,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:51,293 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-08-23 19:42:51,294 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:51,294 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920861231]
[2024-08-23 19:42:51,294 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920861231] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:42:51,294 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606800853]
[2024-08-23 19:42:51,295 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:51,295 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:51,295 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:51,297 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)
[2024-08-23 19:42:51,298 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-08-23 19:42:51,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:51,440 INFO  L262         TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjunts are in the unsatisfiable core
[2024-08-23 19:42:51,476 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:42:51,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-08-23 19:42:51,598 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-08-23 19:42:51,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-08-23 19:42:51,645 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [606800853] provided 0 perfect and 2 imperfect interpolant sequences
[2024-08-23 19:42:51,645 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-08-23 19:42:51,645 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-08-23 19:42:51,646 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159458331]
[2024-08-23 19:42:51,646 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-08-23 19:42:51,647 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-08-23 19:42:51,648 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:51,649 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-08-23 19:42:51,649 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-08-23 19:42:51,650 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:51,650 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:51,650 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 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)
[2024-08-23 19:42:51,651 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:51,651 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:51,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:51,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:51,921 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining)
[2024-08-23 19:42:51,921 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 3 remaining)
[2024-08-23 19:42:51,922 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 3 remaining)
[2024-08-23 19:42:51,940 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-08-23 19:42:52,122 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-08-23 19:42:52,128 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2024-08-23 19:42:52,131 INFO  L308   ceAbstractionStarter]: Result for error location t2_funThread1of1ForFork0 was SAFE,SAFE,SAFE (1/3)
[2024-08-23 19:42:52,136 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:52,137 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2024-08-23 19:42:52,137 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:52,144 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2024-08-23 19:42:52,146 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process
[2024-08-23 19:42:52,148 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2024-08-23 19:42:52,148 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1_funThread1of1ForFork1 ========
[2024-08-23 19:42:52,149 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@356892ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:52,149 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-08-23 19:42:52,258 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:52,260 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:52,261 INFO  L85        PathProgramCache]: Analyzing trace with hash 495203286, now seen corresponding path program 1 times
[2024-08-23 19:42:52,261 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:52,261 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815174857]
[2024-08-23 19:42:52,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:52,261 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:52,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:52,302 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-08-23 19:42:52,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:52,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815174857]
[2024-08-23 19:42:52,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815174857] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:42:52,304 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-08-23 19:42:52,304 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-08-23 19:42:52,304 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603782761]
[2024-08-23 19:42:52,305 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:42:52,306 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-08-23 19:42:52,306 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:52,306 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-08-23 19:42:52,308 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-08-23 19:42:52,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:52,309 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:52,309 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 9.5) 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)
[2024-08-23 19:42:52,309 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:52,336 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:52,337 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-08-23 19:42:52,337 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:52,338 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:52,340 INFO  L85        PathProgramCache]: Analyzing trace with hash 259414262, now seen corresponding path program 1 times
[2024-08-23 19:42:52,340 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:52,341 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451551555]
[2024-08-23 19:42:52,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:52,341 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:52,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:52,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:42:52,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:52,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451551555]
[2024-08-23 19:42:52,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451551555] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:42:52,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104567532]
[2024-08-23 19:42:52,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:52,680 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:52,680 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:52,683 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)
[2024-08-23 19:42:52,685 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-08-23 19:42:52,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:52,794 INFO  L262         TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 17 conjunts are in the unsatisfiable core
[2024-08-23 19:42:52,795 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:42:52,862 INFO  L349             Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-08-23 19:42:52,863 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-08-23 19:42:52,923 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:42:53,102 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:42:53,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:42:53,155 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-08-23 19:42:53,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:42:53,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104567532] provided 0 perfect and 2 imperfect interpolant sequences
[2024-08-23 19:42:53,307 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-08-23 19:42:53,307 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6
[2024-08-23 19:42:53,307 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070715184]
[2024-08-23 19:42:53,307 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-08-23 19:42:53,308 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-08-23 19:42:53,308 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:53,308 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-08-23 19:42:53,309 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56
[2024-08-23 19:42:53,309 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:53,309 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:53,310 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 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)
[2024-08-23 19:42:53,310 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:53,310 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:54,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:54,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:54,190 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-08-23 19:42:54,378 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:54,379 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:54,379 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:54,379 INFO  L85        PathProgramCache]: Analyzing trace with hash 259238399, now seen corresponding path program 1 times
[2024-08-23 19:42:54,380 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:54,380 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103712640]
[2024-08-23 19:42:54,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:54,380 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:54,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:54,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:54,430 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:54,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103712640]
[2024-08-23 19:42:54,431 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103712640] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:42:54,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274568242]
[2024-08-23 19:42:54,431 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:54,431 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:54,431 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:54,434 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-08-23 19:42:54,437 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-08-23 19:42:54,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:54,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core
[2024-08-23 19:42:54,540 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:42:54,560 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:54,561 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-08-23 19:42:54,586 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:54,587 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [274568242] provided 0 perfect and 2 imperfect interpolant sequences
[2024-08-23 19:42:54,587 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-08-23 19:42:54,587 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2024-08-23 19:42:54,587 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628120039]
[2024-08-23 19:42:54,587 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-08-23 19:42:54,588 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-08-23 19:42:54,588 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:54,589 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-08-23 19:42:54,590 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2024-08-23 19:42:54,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:54,590 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:54,591 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:54,591 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:54,591 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:54,591 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:54,710 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:54,710 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:54,710 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:54,729 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-08-23 19:42:54,914 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:54,915 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:54,916 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:54,916 INFO  L85        PathProgramCache]: Analyzing trace with hash -2140880623, now seen corresponding path program 1 times
[2024-08-23 19:42:54,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:54,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395453442]
[2024-08-23 19:42:54,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:54,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:54,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:55,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:55,253 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:55,253 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395453442]
[2024-08-23 19:42:55,253 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395453442] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:42:55,253 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334001220]
[2024-08-23 19:42:55,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:55,253 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:55,254 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:55,257 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)
[2024-08-23 19:42:55,283 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-08-23 19:42:55,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:55,392 INFO  L262         TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 18 conjunts are in the unsatisfiable core
[2024-08-23 19:42:55,394 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:42:55,569 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-08-23 19:42:55,570 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23
[2024-08-23 19:42:55,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:55,635 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-08-23 19:42:55,635 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [334001220] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:42:55,635 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-08-23 19:42:55,636 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8
[2024-08-23 19:42:55,636 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127684425]
[2024-08-23 19:42:55,638 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:42:55,638 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-08-23 19:42:55,639 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:55,639 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-08-23 19:42:55,639 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-08-23 19:42:55,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:55,640 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:55,640 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:55,640 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:55,640 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:55,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:55,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:55,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:55,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:55,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:55,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-08-23 19:42:55,891 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-08-23 19:42:56,074 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:56,075 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:42:56,075 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:56,075 INFO  L85        PathProgramCache]: Analyzing trace with hash 470354191, now seen corresponding path program 2 times
[2024-08-23 19:42:56,075 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:56,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480738701]
[2024-08-23 19:42:56,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:56,076 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:56,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:57,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:57,005 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:57,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480738701]
[2024-08-23 19:42:57,006 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480738701] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:42:57,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876453211]
[2024-08-23 19:42:57,006 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-08-23 19:42:57,006 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:57,006 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:57,009 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)
[2024-08-23 19:42:57,012 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-08-23 19:42:57,110 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-08-23 19:42:57,110 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-08-23 19:42:57,112 INFO  L262         TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core
[2024-08-23 19:42:57,115 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:42:57,137 INFO  L349             Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-08-23 19:42:57,138 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-08-23 19:42:57,387 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23
[2024-08-23 19:42:57,430 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:42:57,559 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:57,559 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-08-23 19:42:57,604 WARN  L854   $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_177 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_177) |c_~#global2~0.base|) |c_~#global2~0.offset|))) (forall ((v_ArrVal_177 (Array Int Int))) (<= 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_177) |c_~#global1~0.base|) |c_~#global1~0.offset|)))) is different from false
[2024-08-23 19:42:57,720 INFO  L349             Elim1Store]: treesize reduction 45, result has 60.5 percent of original size
[2024-08-23 19:42:57,720 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 96
[2024-08-23 19:42:57,754 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-08-23 19:42:57,755 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 125
[2024-08-23 19:42:57,764 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35
[2024-08-23 19:42:57,772 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35 treesize of output 33
[2024-08-23 19:42:58,068 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked.
[2024-08-23 19:42:58,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [876453211] provided 0 perfect and 2 imperfect interpolant sequences
[2024-08-23 19:42:58,068 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-08-23 19:42:58,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16
[2024-08-23 19:42:58,069 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630566787]
[2024-08-23 19:42:58,069 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-08-23 19:42:58,069 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-08-23 19:42:58,069 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:58,070 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-08-23 19:42:58,070 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=211, Unknown=12, NotChecked=30, Total=306
[2024-08-23 19:42:58,070 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,070 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:58,071 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:58,071 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,071 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:58,071 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:58,071 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2024-08-23 19:42:58,071 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:58,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-08-23 19:42:58,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-08-23 19:42:58,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-08-23 19:42:58,352 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining)
[2024-08-23 19:42:58,352 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 3 remaining)
[2024-08-23 19:42:58,352 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 3 remaining)
[2024-08-23 19:42:58,370 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-08-23 19:42:58,552 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-08-23 19:42:58,554 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2024-08-23 19:42:58,554 INFO  L308   ceAbstractionStarter]: Result for error location t1_funThread1of1ForFork1 was SAFE,SAFE,SAFE (2/3)
[2024-08-23 19:42:58,556 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:58,557 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2024-08-23 19:42:58,557 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:58,558 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2024-08-23 19:42:58,560 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process
[2024-08-23 19:42:58,563 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2024-08-23 19:42:58,563 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2024-08-23 19:42:58,563 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@356892ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:58,563 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-08-23 19:42:58,623 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-08-23 19:42:58,627 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:58,627 INFO  L85        PathProgramCache]: Analyzing trace with hash -36342001, now seen corresponding path program 1 times
[2024-08-23 19:42:58,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:58,628 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153357985]
[2024-08-23 19:42:58,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:58,628 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:58,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:58,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:58,657 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:58,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153357985]
[2024-08-23 19:42:58,657 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153357985] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:42:58,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-08-23 19:42:58,657 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-08-23 19:42:58,657 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258829556]
[2024-08-23 19:42:58,657 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:42:58,658 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-08-23 19:42:58,658 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:58,658 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-08-23 19:42:58,658 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-08-23 19:42:58,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,658 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:58,659 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:58,659 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,684 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,684 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-08-23 19:42:58,684 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-08-23 19:42:58,685 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:58,685 INFO  L85        PathProgramCache]: Analyzing trace with hash 553044648, now seen corresponding path program 1 times
[2024-08-23 19:42:58,685 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:58,685 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900466071]
[2024-08-23 19:42:58,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:58,685 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:58,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-08-23 19:42:58,695 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-08-23 19:42:58,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-08-23 19:42:58,724 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-08-23 19:42:58,724 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2024-08-23 19:42:58,724 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining)
[2024-08-23 19:42:58,726 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining)
[2024-08-23 19:42:58,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-08-23 19:42:58,729 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2024-08-23 19:42:58,730 INFO  L308   ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/3)
[2024-08-23 19:42:58,730 WARN  L234   ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-08-23 19:42:58,730 INFO  L522   ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2024-08-23 19:42:58,787 INFO  L144    ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions.
[2024-08-23 19:42:58,790 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:58,794 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2024-08-23 19:42:58,794 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:58,796 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2024-08-23 19:42:58,817 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process
[2024-08-23 19:42:58,821 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2024-08-23 19:42:58,822 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2024-08-23 19:42:58,822 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@356892ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:42:58,822 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-08-23 19:42:58,950 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-08-23 19:42:58,951 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:58,951 INFO  L85        PathProgramCache]: Analyzing trace with hash -949594213, now seen corresponding path program 1 times
[2024-08-23 19:42:58,951 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:58,951 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116724559]
[2024-08-23 19:42:58,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:58,951 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:58,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:58,973 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-08-23 19:42:58,973 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:58,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116724559]
[2024-08-23 19:42:58,973 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116724559] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:42:58,973 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-08-23 19:42:58,973 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-08-23 19:42:58,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178770734]
[2024-08-23 19:42:58,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:42:58,974 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-08-23 19:42:58,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:58,975 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-08-23 19:42:58,975 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-08-23 19:42:58,976 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:58,976 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:58,976 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:58,976 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,056 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-08-23 19:42:59,056 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-08-23 19:42:59,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:59,057 INFO  L85        PathProgramCache]: Analyzing trace with hash 837789250, now seen corresponding path program 1 times
[2024-08-23 19:42:59,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:59,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797728964]
[2024-08-23 19:42:59,057 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:59,058 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:59,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:59,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-08-23 19:42:59,178 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:59,178 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797728964]
[2024-08-23 19:42:59,179 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797728964] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:42:59,179 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-08-23 19:42:59,179 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-08-23 19:42:59,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840068253]
[2024-08-23 19:42:59,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:42:59,179 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-08-23 19:42:59,179 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:59,180 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-08-23 19:42:59,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-08-23 19:42:59,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,180 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:59,180 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:59,180 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,180 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,256 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,257 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:59,257 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-08-23 19:42:59,257 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-08-23 19:42:59,258 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:42:59,258 INFO  L85        PathProgramCache]: Analyzing trace with hash -1332127649, now seen corresponding path program 1 times
[2024-08-23 19:42:59,258 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:42:59,258 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956759879]
[2024-08-23 19:42:59,258 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:59,258 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:42:59,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:59,449 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:42:59,449 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:42:59,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956759879]
[2024-08-23 19:42:59,449 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956759879] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:42:59,450 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29951357]
[2024-08-23 19:42:59,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:42:59,450 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:42:59,450 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:42:59,452 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)
[2024-08-23 19:42:59,453 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-08-23 19:42:59,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:42:59,562 INFO  L262         TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core
[2024-08-23 19:42:59,564 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:42:59,584 INFO  L349             Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-08-23 19:42:59,585 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-08-23 19:42:59,614 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:42:59,750 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:42:59,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:42:59,807 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-08-23 19:42:59,858 WARN  L854   $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_251 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_251) |c_~#global1~0.base|) |c_~#global1~0.offset|))) (forall ((v_ArrVal_251 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_251) |c_~#global2~0.base|) |c_~#global2~0.offset|)))) is different from false
[2024-08-23 19:42:59,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked.
[2024-08-23 19:42:59,892 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [29951357] provided 0 perfect and 2 imperfect interpolant sequences
[2024-08-23 19:42:59,893 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-08-23 19:42:59,893 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7
[2024-08-23 19:42:59,893 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152200057]
[2024-08-23 19:42:59,893 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-08-23 19:42:59,893 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-08-23 19:42:59,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:42:59,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-08-23 19:42:59,894 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=26, Unknown=1, NotChecked=10, Total=56
[2024-08-23 19:42:59,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,894 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:42:59,894 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:42:59,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:42:59,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:42:59,895 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:43:00,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:43:00,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-08-23 19:43:00,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-08-23 19:43:00,046 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-08-23 19:43:00,229 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-08-23 19:43:00,230 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-08-23 19:43:00,230 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:43:00,230 INFO  L85        PathProgramCache]: Analyzing trace with hash -1166785721, now seen corresponding path program 1 times
[2024-08-23 19:43:00,230 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:43:00,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049480709]
[2024-08-23 19:43:00,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:43:00,231 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:43:00,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-08-23 19:43:00,267 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-08-23 19:43:00,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-08-23 19:43:00,302 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-08-23 19:43:00,303 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2024-08-23 19:43:00,303 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining)
[2024-08-23 19:43:00,303 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining)
[2024-08-23 19:43:00,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-08-23 19:43:00,308 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2024-08-23 19:43:00,309 INFO  L308   ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/5)
[2024-08-23 19:43:00,309 WARN  L234   ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-08-23 19:43:00,309 INFO  L522   ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2024-08-23 19:43:00,366 INFO  L144    ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions.
[2024-08-23 19:43:00,369 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:43:00,369 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2024-08-23 19:43:00,369 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:43:00,371 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2024-08-23 19:43:00,373 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process
[2024-08-23 19:43:00,375 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2024-08-23 19:43:00,375 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1_funThread1of3ForFork1 ========
[2024-08-23 19:43:00,375 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@356892ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-08-23 19:43:00,376 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-08-23 19:43:04,049 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:43:04,050 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:43:04,050 INFO  L85        PathProgramCache]: Analyzing trace with hash -873838014, now seen corresponding path program 1 times
[2024-08-23 19:43:04,050 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:43:04,050 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958610961]
[2024-08-23 19:43:04,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:43:04,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:43:04,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:43:04,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-08-23 19:43:04,181 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:43:04,181 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958610961]
[2024-08-23 19:43:04,181 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958610961] provided 1 perfect and 0 imperfect interpolant sequences
[2024-08-23 19:43:04,181 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-08-23 19:43:04,181 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-08-23 19:43:04,182 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334908455]
[2024-08-23 19:43:04,182 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-08-23 19:43:04,183 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-08-23 19:43:04,183 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:43:04,183 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-08-23 19:43:04,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-08-23 19:43:04,184 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:43:04,184 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:43:04,184 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:43:04,184 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:43:04,261 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:43:04,262 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-08-23 19:43:04,262 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t1_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t1_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] ===
[2024-08-23 19:43:04,262 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-08-23 19:43:04,262 INFO  L85        PathProgramCache]: Analyzing trace with hash -1995203866, now seen corresponding path program 1 times
[2024-08-23 19:43:04,263 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-08-23 19:43:04,263 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769937006]
[2024-08-23 19:43:04,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:43:04,263 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-08-23 19:43:04,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:43:04,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:43:04,475 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-08-23 19:43:04,475 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769937006]
[2024-08-23 19:43:04,475 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769937006] provided 0 perfect and 1 imperfect interpolant sequences
[2024-08-23 19:43:04,475 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581881393]
[2024-08-23 19:43:04,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-08-23 19:43:04,475 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-08-23 19:43:04,475 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3
[2024-08-23 19:43:04,478 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)
[2024-08-23 19:43:04,479 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-08-23 19:43:04,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-08-23 19:43:04,600 INFO  L262         TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjunts are in the unsatisfiable core
[2024-08-23 19:43:04,602 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-08-23 19:43:04,622 INFO  L349             Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2024-08-23 19:43:04,623 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18
[2024-08-23 19:43:04,646 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:43:04,739 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2024-08-23 19:43:04,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-08-23 19:43:04,797 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-08-23 19:43:04,835 WARN  L854   $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_313 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_313) |c_~#global2~0.base|) |c_~#global2~0.offset|))) (forall ((v_ArrVal_313 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_313) |c_~#global1~0.base|) |c_~#global1~0.offset|)))) is different from false
[2024-08-23 19:43:04,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked.
[2024-08-23 19:43:04,876 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581881393] provided 0 perfect and 2 imperfect interpolant sequences
[2024-08-23 19:43:04,876 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-08-23 19:43:04,876 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6
[2024-08-23 19:43:04,877 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943001226]
[2024-08-23 19:43:04,877 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-08-23 19:43:04,877 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-08-23 19:43:04,877 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-08-23 19:43:04,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-08-23 19:43:04,878 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=26, Unknown=1, NotChecked=10, Total=56
[2024-08-23 19:43:04,878 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-08-23 19:43:04,878 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2024-08-23 19:43:04,878 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-08-23 19:43:04,878 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2024-08-23 19:43:04,878 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.