./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-09-02_08-21-23.files/protection-local/28-race_reach_36-indirect_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a4c57e3 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_36-indirect_racefree.i ./goblint.2024-09-02_08-21-23.files/protection-local/28-race_reach_36-indirect_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-4a4c57e-m [2024-09-08 18:09:40,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-08 18:09:41,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-08 18:09:41,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-08 18:09:41,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-08 18:09:41,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-08 18:09:41,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-08 18:09:41,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-08 18:09:41,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-08 18:09:41,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-08 18:09:41,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-08 18:09:41,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-08 18:09:41,063 INFO L153 SettingsManager]: * Use SBE=true [2024-09-08 18:09:41,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-08 18:09:41,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-08 18:09:41,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-08 18:09:41,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-08 18:09:41,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-08 18:09:41,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-08 18:09:41,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-08 18:09:41,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-08 18:09:41,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-08 18:09:41,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-08 18:09:41,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-08 18:09:41,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-08 18:09:41,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-08 18:09:41,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-08 18:09:41,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-08 18:09:41,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-08 18:09:41,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-08 18:09:41,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 18:09:41,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-08 18:09:41,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-08 18:09:41,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-08 18:09:41,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-08 18:09:41,077 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-08 18:09:41,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-08 18:09:41,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-08 18:09:41,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-08 18:09:41,080 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-08 18:09:41,080 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-08 18:09:41,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-09-08 18:09:41,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-08 18:09:41,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-08 18:09:41,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-08 18:09:41,416 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-08 18:09:41,417 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-08 18:09:41,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/protection-local/28-race_reach_36-indirect_racefree.yml/witness.yml [2024-09-08 18:09:41,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-08 18:09:41,488 INFO L274 PluginConnector]: CDTParser initialized [2024-09-08 18:09:41,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2024-09-08 18:09:43,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-08 18:09:43,393 INFO L384 CDTParser]: Found 1 translation units. [2024-09-08 18:09:43,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2024-09-08 18:09:43,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/416f6fc4a/c957c6caf1e34c47852667be4eb1aa75/FLAG7fee539e7 [2024-09-08 18:09:43,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/416f6fc4a/c957c6caf1e34c47852667be4eb1aa75 [2024-09-08 18:09:43,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-08 18:09:43,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-08 18:09:43,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-08 18:09:43,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-08 18:09:43,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-08 18:09:43,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 06:09:41" (1/2) ... [2024-09-08 18:09:43,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c7ef95 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 06:09:43, skipping insertion in model container [2024-09-08 18:09:43,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 06:09:41" (1/2) ... [2024-09-08 18:09:43,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a611d52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 06:09:43, skipping insertion in model container [2024-09-08 18:09:43,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:09:43" (2/2) ... [2024-09-08 18:09:43,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c7ef95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:43, skipping insertion in model container [2024-09-08 18:09:43,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:09:43" (2/2) ... [2024-09-08 18:09:43,481 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-08 18:09:43,482 INFO L1541 ArrayList]: Location invariant before [L703-L703] 1 <= g [2024-09-08 18:09:43,482 INFO L1541 ArrayList]: Location invariant before [L711-L711] 0 <= g [2024-09-08 18:09:43,482 INFO L1541 ArrayList]: Location invariant before [L703-L703] 0 <= g [2024-09-08 18:09:43,483 INFO L1541 ArrayList]: Location invariant before [L711-L711] 0 <= g [2024-09-08 18:09:43,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-08 18:09:43,860 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2024-09-08 18:09:43,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 18:09:43,905 INFO L200 MainTranslator]: Completed pre-run [2024-09-08 18:09:43,969 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-08 18:09:44,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 18:09:44,073 INFO L204 MainTranslator]: Completed translation [2024-09-08 18:09:44,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44 WrapperNode [2024-09-08 18:09:44,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-08 18:09:44,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-08 18:09:44,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-08 18:09:44,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-08 18:09:44,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,134 INFO L138 Inliner]: procedures = 171, calls = 46, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-09-08 18:09:44,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-08 18:09:44,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-08 18:09:44,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-08 18:09:44,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-08 18:09:44,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-08 18:09:44,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-08 18:09:44,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-08 18:09:44,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-08 18:09:44,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (1/1) ... [2024-09-08 18:09:44,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 18:09:44,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:44,223 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) [2024-09-08 18:09:44,226 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 [2024-09-08 18:09:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-08 18:09:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-08 18:09:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-09-08 18:09:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-08 18:09:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-08 18:09:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-09-08 18:09:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-09-08 18:09:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-08 18:09:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-08 18:09:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-09-08 18:09:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-08 18:09:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-08 18:09:44,289 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-08 18:09:44,455 INFO L242 CfgBuilder]: Building ICFG [2024-09-08 18:09:44,457 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-08 18:09:44,735 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-08 18:09:44,736 INFO L291 CfgBuilder]: Performing block encoding [2024-09-08 18:09:44,952 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-08 18:09:44,952 INFO L318 CfgBuilder]: Removed 10 assume(true) statements. [2024-09-08 18:09:44,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:09:44 BoogieIcfgContainer [2024-09-08 18:09:44,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-08 18:09:44,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-08 18:09:44,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-08 18:09:44,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-08 18:09:44,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 06:09:41" (1/4) ... [2024-09-08 18:09:44,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150cf087 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 08.09 06:09:44, skipping insertion in model container [2024-09-08 18:09:44,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:09:43" (2/4) ... [2024-09-08 18:09:44,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150cf087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:09:44, skipping insertion in model container [2024-09-08 18:09:44,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:09:44" (3/4) ... [2024-09-08 18:09:44,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150cf087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:09:44, skipping insertion in model container [2024-09-08 18:09:44,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:09:44" (4/4) ... [2024-09-08 18:09:44,967 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2024-09-08 18:09:44,988 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-08 18:09:44,989 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-08 18:09:44,989 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-08 18:09:45,036 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-09-08 18:09:45,095 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:45,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:09:45,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:45,102 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) [2024-09-08 18:09:45,108 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 [2024-09-08 18:09:45,143 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:09:45,159 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2024-09-08 18:09:45,168 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:45,169 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-08 18:09:45,339 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:45,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -802082600, now seen corresponding path program 1 times [2024-09-08 18:09:45,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:45,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194233870] [2024-09-08 18:09:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:45,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 18:09:45,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:45,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194233870] [2024-09-08 18:09:45,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194233870] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:45,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:45,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:09:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828573824] [2024-09-08 18:09:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:45,585 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:09:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:09:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:09:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:45,625 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:45,626 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-09-08 18:09:45,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:45,665 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-08 18:09:45,665 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:45,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash -302967316, now seen corresponding path program 1 times [2024-09-08 18:09:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:45,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927056871] [2024-09-08 18:09:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927056871] [2024-09-08 18:09:46,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927056871] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124414356] [2024-09-08 18:09:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:46,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:46,115 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) [2024-09-08 18:09:46,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-08 18:09:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:46,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-08 18:09:46,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:46,337 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:09:46,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:09:46,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:46,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:46,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:09:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124414356] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:09:46,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:09:46,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-09-08 18:09:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964468745] [2024-09-08 18:09:46,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:09:46,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-08 18:09:46,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-08 18:09:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2024-09-08 18:09:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:46,657 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:46,658 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:46,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:46,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:46,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-08 18:09:46,943 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-09-08 18:09:46,944 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:46,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1753096238, now seen corresponding path program 1 times [2024-09-08 18:09:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:46,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102392182] [2024-09-08 18:09:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:46,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 18:09:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102392182] [2024-09-08 18:09:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102392182] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:09:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050643686] [2024-09-08 18:09:47,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:47,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:09:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:47,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:09:47,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-08 18:09:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:47,292 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:47,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:47,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:47,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:47,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:09:48,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-08 18:09:48,087 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:48,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1353736210, now seen corresponding path program 2 times [2024-09-08 18:09:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:48,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801348155] [2024-09-08 18:09:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 18:09:48,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801348155] [2024-09-08 18:09:48,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801348155] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796458601] [2024-09-08 18:09:48,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 18:09:48,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:48,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:48,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:09:48,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-08 18:09:48,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 18:09:48,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 18:09:48,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-08 18:09:48,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:48,579 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:09:48,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:09:48,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-08 18:09:48,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 18:09:48,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:09:48,990 INFO L349 Elim1Store]: treesize reduction 17, result has 70.2 percent of original size [2024-09-08 18:09:48,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 53 [2024-09-08 18:09:49,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-08 18:09:49,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 56 [2024-09-08 18:09:49,015 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 5 treesize of output 3 [2024-09-08 18:09:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 18:09:49,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796458601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:09:49,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:09:49,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2024-09-08 18:09:49,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837715255] [2024-09-08 18:09:49,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:09:49,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-08 18:09:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-08 18:09:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=88, Unknown=8, NotChecked=0, Total=132 [2024-09-08 18:09:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,145 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:49,146 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2024-09-08 18:09:49,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:49,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:09:49,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:09:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:49,510 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-08 18:09:49,511 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-08 18:09:49,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-08 18:09:49,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:49,723 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-09-08 18:09:49,725 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE,SAFE (1/2) [2024-09-08 18:09:49,732 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:49,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:09:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:49,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:09:49,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-09-08 18:09:49,742 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:09:49,745 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 18:09:49,746 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:49,746 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-08 18:09:49,794 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:49,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash 682585203, now seen corresponding path program 1 times [2024-09-08 18:09:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834899211] [2024-09-08 18:09:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 18:09:49,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:49,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834899211] [2024-09-08 18:09:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834899211] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:49,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:49,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:09:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2319292] [2024-09-08 18:09:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:49,819 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:09:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:09:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:09:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,821 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:49,821 INFO L475 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) [2024-09-08 18:09:49,821 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:49,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-08 18:09:49,848 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:49,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1502384977, now seen corresponding path program 1 times [2024-09-08 18:09:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966913296] [2024-09-08 18:09:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 18:09:49,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 18:09:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 18:09:49,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 18:09:49,897 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 18:09:49,897 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-09-08 18:09:49,897 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-09-08 18:09:49,898 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 4 remaining) [2024-09-08 18:09:49,898 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-09-08 18:09:49,898 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-08 18:09:49,899 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-08 18:09:49,903 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2024-09-08 18:09:49,904 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-08 18:09:49,905 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-09-08 18:09:49,924 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-09-08 18:09:49,927 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:09:49,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:49,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:09:49,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2024-09-08 18:09:49,935 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:09:49,935 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2024-09-08 18:09:49,936 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:49,936 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-08 18:09:50,240 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:50,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1558635027, now seen corresponding path program 1 times [2024-09-08 18:09:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262861703] [2024-09-08 18:09:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:50,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262861703] [2024-09-08 18:09:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262861703] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:50,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:09:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463600370] [2024-09-08 18:09:50,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:50,313 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:09:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:09:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:09:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:50,314 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:50,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:50,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:50,345 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-08 18:09:50,345 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:50,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 59443060, now seen corresponding path program 1 times [2024-09-08 18:09:50,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031558514] [2024-09-08 18:09:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031558514] [2024-09-08 18:09:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031558514] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240381214] [2024-09-08 18:09:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:50,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:50,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:50,452 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) [2024-09-08 18:09:50,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-08 18:09:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:50,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-08 18:09:50,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:50,559 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:09:50,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:09:50,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:50,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:50,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:09:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:50,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240381214] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:09:50,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:09:50,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-09-08 18:09:50,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537170027] [2024-09-08 18:09:50,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:09:50,733 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-08 18:09:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-08 18:09:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2024-09-08 18:09:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:50,734 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:50,734 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2024-09-08 18:09:50,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:50,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:50,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-08 18:09:51,062 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:51,062 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:51,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1007652232, now seen corresponding path program 1 times [2024-09-08 18:09:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:51,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040991780] [2024-09-08 18:09:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040991780] [2024-09-08 18:09:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040991780] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959116075] [2024-09-08 18:09:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:51,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:51,372 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) [2024-09-08 18:09:51,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-08 18:09:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:51,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-08 18:09:51,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:51,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-08 18:09:51,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:09:51,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:51,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:09:51,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:51,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-08 18:09:51,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959116075] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:51,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-08 18:09:51,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-09-08 18:09:51,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204265638] [2024-09-08 18:09:51,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:51,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:09:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:09:51,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-08 18:09:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:51,630 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:51,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:51,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:51,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:51,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:51,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-08 18:09:51,869 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-08 18:09:51,869 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:51,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:51,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1626179833, now seen corresponding path program 1 times [2024-09-08 18:09:51,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:51,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962745060] [2024-09-08 18:09:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:51,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:52,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962745060] [2024-09-08 18:09:52,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962745060] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034360672] [2024-09-08 18:09:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:52,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:52,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:52,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:09:52,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-08 18:09:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:52,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-08 18:09:52,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:52,316 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:09:52,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:09:52,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:52,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:52,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-08 18:09:52,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:52,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:09:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 4 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034360672] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:09:54,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:09:54,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 9 [2024-09-08 18:09:54,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992111433] [2024-09-08 18:09:54,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:09:54,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-08 18:09:54,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:54,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-08 18:09:54,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=68, Unknown=7, NotChecked=0, Total=110 [2024-09-08 18:09:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:54,441 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:54,441 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-09-08 18:09:54,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:54,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:54,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:54,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:09:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:55,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-08 18:09:55,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:55,770 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:55,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -913284374, now seen corresponding path program 1 times [2024-09-08 18:09:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756482632] [2024-09-08 18:09:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-08 18:09:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756482632] [2024-09-08 18:09:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756482632] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:55,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:55,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:09:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554421773] [2024-09-08 18:09:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:55,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:09:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:09:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:09:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:55,854 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:55,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-09-08 18:09:55,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:55,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:09:55,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:55,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:55,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:56,270 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-08 18:09:56,271 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:09:56,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1789708742, now seen corresponding path program 1 times [2024-09-08 18:09:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:56,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335698973] [2024-09-08 18:09:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-08 18:09:56,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335698973] [2024-09-08 18:09:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335698973] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675970354] [2024-09-08 18:09:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:56,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:56,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:56,450 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:09:56,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-08 18:09:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:56,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-08 18:09:56,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:56,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:09:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675970354] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:09:56,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:09:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-09-08 18:09:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866938645] [2024-09-08 18:09:56,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:09:56,658 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-08 18:09:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-08 18:09:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-08 18:09:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:56,659 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:56,659 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-09-08 18:09:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:09:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:09:57,004 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-08 18:09:57,004 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-08 18:09:57,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-08 18:09:57,204 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:57,206 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-08 18:09:57,207 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE,SAFE (1/3) [2024-09-08 18:09:57,212 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:09:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:57,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:09:57,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2024-09-08 18:09:57,220 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:09:57,221 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 18:09:57,221 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:57,221 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-08 18:09:57,299 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:57,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1292671309, now seen corresponding path program 1 times [2024-09-08 18:09:57,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:57,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120790306] [2024-09-08 18:09:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:57,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 18:09:57,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:57,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120790306] [2024-09-08 18:09:57,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120790306] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:57,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:57,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:09:57,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763255504] [2024-09-08 18:09:57,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:57,322 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:09:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:57,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:09:57,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:09:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,323 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:57,323 INFO L475 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) [2024-09-08 18:09:57,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,392 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-08 18:09:57,392 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:57,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:57,392 INFO L85 PathProgramCache]: Analyzing trace with hash -867944479, now seen corresponding path program 1 times [2024-09-08 18:09:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62986555] [2024-09-08 18:09:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 18:09:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:57,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62986555] [2024-09-08 18:09:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62986555] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:57,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:57,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:09:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970288195] [2024-09-08 18:09:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:57,459 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:09:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:09:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:09:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,460 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:57,460 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:57,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-08 18:09:57,496 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:57,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:57,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1290220188, now seen corresponding path program 1 times [2024-09-08 18:09:57,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:57,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794349596] [2024-09-08 18:09:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:57,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:57,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:57,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794349596] [2024-09-08 18:09:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794349596] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:57,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:57,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:09:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273638948] [2024-09-08 18:09:57,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:57,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:09:57,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:09:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:09:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,630 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:57,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2024-09-08 18:09:57,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,725 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-08 18:09:57,726 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:57,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1608826430, now seen corresponding path program 1 times [2024-09-08 18:09:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:57,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604087619] [2024-09-08 18:09:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:09:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604087619] [2024-09-08 18:09:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604087619] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:57,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-08 18:09:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760599252] [2024-09-08 18:09:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:57,893 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:09:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:09:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-08 18:09:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,894 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:57,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 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) [2024-09-08 18:09:57,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:57,935 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-08 18:09:57,935 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:57,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1230724383, now seen corresponding path program 1 times [2024-09-08 18:09:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:57,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674954487] [2024-09-08 18:09:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:57,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 18:09:57,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 18:09:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 18:09:57,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 18:09:57,964 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 18:09:57,964 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-09-08 18:09:57,964 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-09-08 18:09:57,965 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 4 remaining) [2024-09-08 18:09:57,965 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-09-08 18:09:57,965 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-08 18:09:57,966 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-08 18:09:57,967 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/3) [2024-09-08 18:09:57,967 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-08 18:09:57,967 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-09-08 18:09:57,985 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-09-08 18:09:57,987 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:57,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:09:57,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:57,990 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) [2024-09-08 18:09:57,994 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 [2024-09-08 18:09:57,997 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:09:58,000 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 18:09:58,000 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:09:58,000 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-08 18:09:58,096 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:58,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -564878816, now seen corresponding path program 1 times [2024-09-08 18:09:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:58,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336918533] [2024-09-08 18:09:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-08 18:09:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:58,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336918533] [2024-09-08 18:09:58,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336918533] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:58,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:58,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:09:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115882229] [2024-09-08 18:09:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:58,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:09:58,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:09:58,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:09:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,118 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:58,118 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:58,118 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,222 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-09-08 18:09:58,222 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:58,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash -584736186, now seen corresponding path program 1 times [2024-09-08 18:09:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:58,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747327034] [2024-09-08 18:09:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747327034] [2024-09-08 18:09:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747327034] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:58,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:09:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804097553] [2024-09-08 18:09:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:58,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:09:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:09:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:09:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,291 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:58,291 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2024-09-08 18:09:58,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:58,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-09-08 18:09:58,336 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:58,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 899200981, now seen corresponding path program 1 times [2024-09-08 18:09:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928514799] [2024-09-08 18:09:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:58,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-08 18:09:58,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:58,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928514799] [2024-09-08 18:09:58,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928514799] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:58,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:09:58,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:09:58,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250823403] [2024-09-08 18:09:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:58,472 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:09:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:09:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:09:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,472 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:58,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:09:58,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:58,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:58,609 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-09-08 18:09:58,609 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:58,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:58,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1756365432, now seen corresponding path program 1 times [2024-09-08 18:09:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:58,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559396315] [2024-09-08 18:09:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:58,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:58,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559396315] [2024-09-08 18:09:58,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559396315] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768089050] [2024-09-08 18:09:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:58,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:58,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:58,895 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) [2024-09-08 18:09:58,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-08 18:09:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:59,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-08 18:09:59,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:59,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-08 18:09:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:09:59,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:59,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:09:59,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:09:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:59,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-08 18:09:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768089050] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:09:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-08 18:09:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-09-08 18:09:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842693232] [2024-09-08 18:09:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:09:59,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:09:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:09:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:09:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-08 18:09:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:59,229 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:09:59,229 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-09-08 18:09:59,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:59,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:59,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:59,230 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:09:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:09:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:09:59,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-08 18:09:59,504 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-08 18:09:59,505 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:09:59,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:09:59,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1052285954, now seen corresponding path program 1 times [2024-09-08 18:09:59,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:09:59,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865751828] [2024-09-08 18:09:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:59,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:09:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:09:59,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:09:59,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865751828] [2024-09-08 18:09:59,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865751828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:09:59,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807739982] [2024-09-08 18:09:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:09:59,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:09:59,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:09:59,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:09:59,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-08 18:09:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:09:59,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-08 18:09:59,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:09:59,965 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:09:59,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:10:00,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:00,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:00,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-08 18:10:00,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:10:00,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:10:00,332 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_557 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_557) |c_~#g~0.base|) |c_~#g~0.offset|))) is different from false [2024-09-08 18:10:00,346 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_557 (Array Int Int))) (< 0 (select (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse0 (select |c_#memory_int| c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (select .cse0 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_557) |c_~#g~0.base|) |c_~#g~0.offset|))) is different from false [2024-09-08 18:10:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2024-09-08 18:10:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807739982] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:10:01,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:10:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 11 [2024-09-08 18:10:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211921882] [2024-09-08 18:10:01,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:10:01,635 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-08 18:10:01,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:01,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-08 18:10:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=61, Unknown=4, NotChecked=34, Total=132 [2024-09-08 18:10:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:01,636 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:01,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-09-08 18:10:01,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:01,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:01,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:01,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:01,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:01,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-08 18:10:02,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-08 18:10:02,046 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-08 18:10:02,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -103340937, now seen corresponding path program 1 times [2024-09-08 18:10:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:02,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956809407] [2024-09-08 18:10:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:02,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 18:10:02,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 18:10:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 18:10:02,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 18:10:02,098 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 18:10:02,098 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-09-08 18:10:02,098 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-09-08 18:10:02,099 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 4 remaining) [2024-09-08 18:10:02,099 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-09-08 18:10:02,099 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-09-08 18:10:02,101 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-08 18:10:02,102 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/4) [2024-09-08 18:10:02,102 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-08 18:10:02,102 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-09-08 18:10:02,166 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-09-08 18:10:02,169 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:10:02,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:10:02,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:10:02,177 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:10:02,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2024-09-08 18:10:02,182 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:10:02,183 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2024-09-08 18:10:02,183 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:10:02,183 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-08 18:10:02,334 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:02,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1928336670, now seen corresponding path program 1 times [2024-09-08 18:10:02,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:02,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680429714] [2024-09-08 18:10:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:02,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-08 18:10:02,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680429714] [2024-09-08 18:10:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680429714] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:02,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:02,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:10:02,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924907771] [2024-09-08 18:10:02,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:02,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:10:02,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:02,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:10:02,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:10:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,358 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:02,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:10:02,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,506 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-09-08 18:10:02,506 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:02,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -130048967, now seen corresponding path program 1 times [2024-09-08 18:10:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:02,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613937743] [2024-09-08 18:10:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-08 18:10:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613937743] [2024-09-08 18:10:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613937743] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:10:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78107841] [2024-09-08 18:10:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:02,590 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:10:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:10:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:10:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,591 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:02,591 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:10:02,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:02,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-08 18:10:02,903 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:02,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash -455787231, now seen corresponding path program 1 times [2024-09-08 18:10:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083397111] [2024-09-08 18:10:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-08 18:10:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083397111] [2024-09-08 18:10:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083397111] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:03,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:10:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479993500] [2024-09-08 18:10:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:03,051 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:10:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:10:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:10:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,052 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:03,052 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:10:03,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,382 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-08 18:10:03,383 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:03,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash 959912794, now seen corresponding path program 1 times [2024-09-08 18:10:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811100194] [2024-09-08 18:10:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:03,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-08 18:10:03,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:03,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811100194] [2024-09-08 18:10:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811100194] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:03,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:03,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:10:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726556147] [2024-09-08 18:10:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:03,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:10:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:10:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-08 18:10:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,656 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:03,656 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-09-08 18:10:03,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:03,997 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-08 18:10:03,997 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:03,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash -530281034, now seen corresponding path program 1 times [2024-09-08 18:10:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777017770] [2024-09-08 18:10:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-08 18:10:04,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:04,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777017770] [2024-09-08 18:10:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777017770] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:04,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:04,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 18:10:04,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89661241] [2024-09-08 18:10:04,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:04,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-08 18:10:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:04,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-08 18:10:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-08 18:10:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:04,529 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:04,529 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-09-08 18:10:04,529 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:04,529 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:04,529 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:04,529 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:04,529 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:10:05,389 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-08 18:10:05,389 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:05,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash -183320834, now seen corresponding path program 2 times [2024-09-08 18:10:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062162600] [2024-09-08 18:10:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-08 18:10:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062162600] [2024-09-08 18:10:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062162600] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:10:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210916510] [2024-09-08 18:10:06,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 18:10:06,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:10:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:10:06,200 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:10:06,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-08 18:10:06,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 18:10:06,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 18:10:06,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-08 18:10:06,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:10:06,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-08 18:10:06,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:10:06,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:06,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:10:06,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-08 18:10:06,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-08 18:10:06,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210916510] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:06,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-08 18:10:06,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-09-08 18:10:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888374721] [2024-09-08 18:10:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:06,610 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:10:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:10:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-08 18:10:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:06,611 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:06,612 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-09-08 18:10:06,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:06,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:06,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:06,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:10:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:10:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:08,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-08 18:10:08,299 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-08 18:10:08,299 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:08,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 702054283, now seen corresponding path program 1 times [2024-09-08 18:10:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609178481] [2024-09-08 18:10:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-08 18:10:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609178481] [2024-09-08 18:10:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609178481] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:10:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745126226] [2024-09-08 18:10:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:08,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:10:08,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:10:08,712 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:10:08,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-08 18:10:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:08,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-08 18:10:08,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:10:08,895 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:10:08,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:10:08,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:09,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:09,124 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-09-08 18:10:09,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2024-09-08 18:10:09,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-09-08 18:10:09,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-08 18:10:09,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:09,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-08 18:10:09,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:09,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-08 18:10:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:10:09,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:10:09,870 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int))) (< 0 (+ (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069))) (store .cse0 c_~g1~0.base (let ((.cse1 (select .cse0 c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (- 1) (select .cse1 c_~g1~0.offset)))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:10:09,926 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select |c_#memory_int| c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (select .cse1 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (- 1) (select .cse0 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:10:12,690 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int)) (v_ArrVal_1067 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1067) c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (select .cse1 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (- 1) (select .cse0 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:10:15,594 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int)) (v_ArrVal_1067 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select |c_#memory_int| c_~g1~0.base))) (store .cse2 c_~g1~0.offset (+ (select .cse2 c_~g1~0.offset) (- 1))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1067) c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (select .cse1 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (- 1) (select .cse0 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:10:19,431 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int)) (v_ArrVal_1067 (Array Int Int)) (v_ArrVal_1065 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1065))) (or (< (select (select .cse0 |c_~#g~0.base|) |c_~#g~0.offset|) 1) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse3 (select .cse0 c_~g1~0.base))) (store .cse3 c_~g1~0.offset (+ (- 1) (select .cse3 c_~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1067) c_~g1~0.base))) (store .cse2 c_~g1~0.offset (+ (select .cse2 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (- 1) (select .cse1 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))))) is different from false [2024-09-08 18:10:22,657 WARN L854 $PredicateComparison]: unable to prove that (forall ((~g1~0.offset Int) (v_ArrVal_1069 (Array Int Int)) (v_ArrVal_1067 (Array Int Int)) (v_ArrVal_1065 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| c_~g1~0.base (let ((.cse4 (select |c_#memory_int| c_~g1~0.base))) (store .cse4 ~g1~0.offset (+ (select .cse4 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1065))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select .cse3 c_~g1~0.base))) (store .cse2 ~g1~0.offset (+ (- 1) (select .cse2 ~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1067) c_~g1~0.base))) (store .cse1 ~g1~0.offset (+ (select .cse1 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base))) (store .cse0 ~g1~0.offset (+ (- 1) (select .cse0 ~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1)) (< (select (select .cse3 |c_~#g~0.base|) |c_~#g~0.offset|) 1)))) is different from false [2024-09-08 18:10:25,527 WARN L854 $PredicateComparison]: unable to prove that (forall ((~g1~0.offset Int) (v_ArrVal_1069 (Array Int Int)) (v_ArrVal_1067 (Array Int Int)) (v_ArrVal_1065 (Array Int Int)) (v_ArrVal_1063 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~g1~0.base (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1063) c_~g1~0.base))) (store .cse4 ~g1~0.offset (+ (select .cse4 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1065))) (or (< (select (select .cse0 |c_~#g~0.base|) |c_~#g~0.offset|) 1) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse3 (select .cse0 c_~g1~0.base))) (store .cse3 ~g1~0.offset (+ (- 1) (select .cse3 ~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1067) c_~g1~0.base))) (store .cse2 ~g1~0.offset (+ (select .cse2 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1069) c_~g1~0.base))) (store .cse1 ~g1~0.offset (+ (- 1) (select .cse1 ~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))))) is different from false [2024-09-08 18:10:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 24 not checked. [2024-09-08 18:10:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745126226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:10:26,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:10:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 10] total 20 [2024-09-08 18:10:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049306910] [2024-09-08 18:10:26,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:10:26,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-08 18:10:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-08 18:10:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=151, Unknown=7, NotChecked=224, Total=462 [2024-09-08 18:10:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:26,351 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:26,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 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) [2024-09-08 18:10:26,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:26,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:26,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:26,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:26,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:10:26,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:26,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:10:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-08 18:10:38,034 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-08 18:10:38,034 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-08 18:10:38,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-08 18:10:38,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:10:38,236 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-09-08 18:10:38,237 INFO L312 ceAbstractionStarter]: Result for error location t_funThread4of4ForFork0 was SAFE,SAFE (1/5) [2024-09-08 18:10:38,240 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:10:38,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:10:38,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:10:38,242 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:10:38,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (18)] Waiting until timeout for monitored process [2024-09-08 18:10:38,248 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:10:38,248 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread2of4ForFork0 ======== [2024-09-08 18:10:38,249 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:10:38,249 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-08 18:10:39,959 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:39,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash -841458086, now seen corresponding path program 1 times [2024-09-08 18:10:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:39,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164407894] [2024-09-08 18:10:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-08 18:10:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164407894] [2024-09-08 18:10:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164407894] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:39,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:10:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338386240] [2024-09-08 18:10:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:39,982 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:10:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:10:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:10:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:39,983 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:39,984 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-09-08 18:10:39,984 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:40,398 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-09-08 18:10:40,398 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:40,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1649219968, now seen corresponding path program 1 times [2024-09-08 18:10:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497457701] [2024-09-08 18:10:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:10:40,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:40,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497457701] [2024-09-08 18:10:40,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497457701] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:40,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:40,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:10:40,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865523065] [2024-09-08 18:10:40,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:40,595 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:10:40,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:10:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:10:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:40,596 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:40,596 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:10:40,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:40,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:41,375 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-09-08 18:10:41,376 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:41,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash 668431016, now seen corresponding path program 1 times [2024-09-08 18:10:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646457651] [2024-09-08 18:10:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-08 18:10:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646457651] [2024-09-08 18:10:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646457651] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:41,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:10:41,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:10:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839665415] [2024-09-08 18:10:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:41,553 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:10:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:10:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:10:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:41,554 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:41,555 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-09-08 18:10:41,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:41,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:41,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:42,609 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-09-08 18:10:42,609 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:42,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434909, now seen corresponding path program 1 times [2024-09-08 18:10:42,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:42,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405123996] [2024-09-08 18:10:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-08 18:10:43,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:43,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405123996] [2024-09-08 18:10:43,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405123996] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:10:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325746304] [2024-09-08 18:10:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:43,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:10:43,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:10:43,804 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:10:43,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-08 18:10:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:43,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-08 18:10:43,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:10:44,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-08 18:10:45,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:10:45,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:45,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:10:45,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-08 18:10:45,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-08 18:10:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325746304] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:10:45,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-08 18:10:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-09-08 18:10:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458835089] [2024-09-08 18:10:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:10:45,733 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:10:45,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:10:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-08 18:10:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:45,733 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:45,734 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 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) [2024-09-08 18:10:45,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:45,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:45,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:45,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:46,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-08 18:10:46,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-08 18:10:46,528 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:10:46,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:10:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 184425348, now seen corresponding path program 1 times [2024-09-08 18:10:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:10:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438882948] [2024-09-08 18:10:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:10:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-08 18:10:47,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:10:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438882948] [2024-09-08 18:10:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438882948] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:10:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892439033] [2024-09-08 18:10:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:10:47,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:10:47,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:10:47,497 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:10:47,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-08 18:10:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:10:47,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-08 18:10:47,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:10:47,804 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:10:47,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:10:50,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-08 18:10:51,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:51,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:10:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-08 18:10:51,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:10:51,852 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1275 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1275) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:10:52,954 INFO L349 Elim1Store]: treesize reduction 17, result has 70.2 percent of original size [2024-09-08 18:10:52,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 55 [2024-09-08 18:10:53,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-08 18:10:53,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-09-08 18:10:53,335 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 5 treesize of output 3 [2024-09-08 18:10:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 13 not checked. [2024-09-08 18:10:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892439033] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:10:53,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:10:53,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-09-08 18:10:53,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917615432] [2024-09-08 18:10:53,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:10:53,930 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-08 18:10:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:10:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-08 18:10:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=4, NotChecked=20, Total=156 [2024-09-08 18:10:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:53,931 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:10:53,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-09-08 18:10:53,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:53,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:53,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:53,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:53,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:10:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:10:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:10:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:10:59,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-08 18:11:00,086 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:11:00,086 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:00,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1922522812, now seen corresponding path program 1 times [2024-09-08 18:11:00,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:00,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604180561] [2024-09-08 18:11:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:00,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-08 18:11:00,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604180561] [2024-09-08 18:11:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604180561] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:11:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082786651] [2024-09-08 18:11:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:11:00,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:11:00,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:11:00,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-08 18:11:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:00,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-08 18:11:00,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:11:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:11:01,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:11:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-08 18:11:03,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082786651] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:11:03,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:11:03,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-09-08 18:11:03,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094508516] [2024-09-08 18:11:03,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:11:03,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-08 18:11:03,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-08 18:11:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-09-08 18:11:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:03,463 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:03,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.857142857142858) internal successors, (250), 14 states have internal predecessors, (250), 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) [2024-09-08 18:11:03,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:03,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:03,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:03,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:11:03,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:03,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:11:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 18:11:11,198 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-08 18:11:11,198 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-08 18:11:11,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-08 18:11:11,398 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-08 18:11:11,400 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-08 18:11:11,400 INFO L312 ceAbstractionStarter]: Result for error location t_funThread2of4ForFork0 was SAFE,SAFE (2/5) [2024-09-08 18:11:11,404 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:11:11,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:11:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:11:11,405 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:11:11,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2024-09-08 18:11:11,408 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:11:11,408 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread3of4ForFork0 ======== [2024-09-08 18:11:11,409 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:11:11,409 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-08 18:11:11,616 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:11,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 117639228, now seen corresponding path program 1 times [2024-09-08 18:11:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:11,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662698709] [2024-09-08 18:11:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:11,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-08 18:11:11,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662698709] [2024-09-08 18:11:11,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662698709] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:11:11,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:11:11,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 18:11:11,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276864472] [2024-09-08 18:11:11,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:11:11,634 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 18:11:11,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 18:11:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 18:11:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:11,635 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:11,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-09-08 18:11:11,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:12,050 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-09-08 18:11:12,050 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:12,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1774635244, now seen corresponding path program 1 times [2024-09-08 18:11:12,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:12,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363022763] [2024-09-08 18:11:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:12,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-08 18:11:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363022763] [2024-09-08 18:11:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363022763] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:11:12,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:11:12,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:11:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053558454] [2024-09-08 18:11:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:11:12,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:11:12,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:11:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:11:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:12,199 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:12,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:11:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:12,960 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-09-08 18:11:12,960 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:12,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 496831937, now seen corresponding path program 1 times [2024-09-08 18:11:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:12,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623894624] [2024-09-08 18:11:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-08 18:11:13,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623894624] [2024-09-08 18:11:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623894624] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:11:13,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:11:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:11:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207787139] [2024-09-08 18:11:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:11:13,119 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 18:11:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 18:11:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 18:11:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:13,120 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:13,120 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-09-08 18:11:13,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:13,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:13,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:14,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-09-08 18:11:14,234 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:14,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1895715094, now seen corresponding path program 1 times [2024-09-08 18:11:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:14,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373012924] [2024-09-08 18:11:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-08 18:11:14,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:14,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373012924] [2024-09-08 18:11:14,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373012924] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:11:14,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:11:14,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 18:11:14,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604663586] [2024-09-08 18:11:14,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:11:14,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:11:14,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:11:14,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-08 18:11:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:14,986 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:14,986 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:11:14,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:14,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:14,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:14,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:17,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-09-08 18:11:17,263 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:17,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1201256302, now seen corresponding path program 1 times [2024-09-08 18:11:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117644078] [2024-09-08 18:11:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-08 18:11:18,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117644078] [2024-09-08 18:11:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117644078] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:11:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 18:11:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 18:11:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428481768] [2024-09-08 18:11:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:11:18,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-08 18:11:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-08 18:11:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-08 18:11:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:18,412 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:18,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 18:11:18,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:18,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:18,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:18,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:18,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:11:21,465 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-09-08 18:11:21,465 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:21,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -664093882, now seen corresponding path program 1 times [2024-09-08 18:11:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:21,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415976293] [2024-09-08 18:11:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-08 18:11:22,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:22,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415976293] [2024-09-08 18:11:22,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415976293] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:11:22,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242058815] [2024-09-08 18:11:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:22,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:11:22,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:11:22,336 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:11:22,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-08 18:11:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:22,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-08 18:11:22,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:11:24,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-08 18:11:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:11:24,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:11:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-08 18:11:25,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:11:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-08 18:11:25,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-08 18:11:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242058815] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 18:11:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-08 18:11:25,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-09-08 18:11:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037621019] [2024-09-08 18:11:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 18:11:25,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-08 18:11:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-08 18:11:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-08 18:11:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:25,384 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:25,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-09-08 18:11:25,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:25,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:25,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:25,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:25,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:11:25,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:11:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:11:29,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-08 18:11:30,173 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-08 18:11:30,173 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-08 18:11:30,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 18:11:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1995030837, now seen corresponding path program 1 times [2024-09-08 18:11:30,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 18:11:30,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988726242] [2024-09-08 18:11:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:30,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 18:11:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-08 18:11:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 18:11:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988726242] [2024-09-08 18:11:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988726242] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 18:11:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142084261] [2024-09-08 18:11:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 18:11:31,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 18:11:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:11:31,233 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 18:11:31,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-08 18:11:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 18:11:31,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-08 18:11:31,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 18:11:31,536 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-09-08 18:11:31,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-09-08 18:11:31,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:11:32,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:11:33,301 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-09-08 18:11:33,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2024-09-08 18:11:34,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-09-08 18:11:35,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-08 18:11:36,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:11:37,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-08 18:11:37,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-08 18:11:38,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-08 18:11:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-08 18:11:38,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 18:11:39,474 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1827 (Array Int Int))) (< 0 (+ (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827))) (store .cse0 c_~g1~0.base (let ((.cse1 (select .cse0 c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (- 1) (select .cse1 c_~g1~0.offset)))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:11:39,788 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1827 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select |c_#memory_int| c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (select .cse1 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (- 1) (select .cse0 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:11:43,193 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1827 (Array Int Int)) (v_ArrVal_1825 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1825) c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (select .cse1 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (- 1) (select .cse0 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:11:46,399 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1827 (Array Int Int)) (v_ArrVal_1825 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base (let ((.cse0 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select |c_#memory_int| c_~g1~0.base))) (store .cse2 c_~g1~0.offset (+ (select .cse2 c_~g1~0.offset) (- 1))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1825) c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (select .cse1 c_~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base))) (store .cse0 c_~g1~0.offset (+ (- 1) (select .cse0 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))) is different from false [2024-09-08 18:11:50,502 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1823 (Array Int Int)) (v_ArrVal_1827 (Array Int Int)) (v_ArrVal_1825 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1823))) (or (< (select (select .cse0 |c_~#g~0.base|) |c_~#g~0.offset|) 1) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse3 (select .cse0 c_~g1~0.base))) (store .cse3 c_~g1~0.offset (+ (- 1) (select .cse3 c_~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1825) c_~g1~0.base))) (store .cse2 c_~g1~0.offset (+ 1 (select .cse2 c_~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base))) (store .cse1 c_~g1~0.offset (+ (- 1) (select .cse1 c_~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))))) is different from false [2024-09-08 18:11:53,684 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1823 (Array Int Int)) (~g1~0.offset Int) (v_ArrVal_1827 (Array Int Int)) (v_ArrVal_1825 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~g1~0.base (let ((.cse4 (select |c_#memory_int| c_~g1~0.base))) (store .cse4 ~g1~0.offset (+ (select .cse4 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1823))) (or (< (select (select .cse0 |c_~#g~0.base|) |c_~#g~0.offset|) 1) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse3 (select .cse0 c_~g1~0.base))) (store .cse3 ~g1~0.offset (+ (- 1) (select .cse3 ~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1825) c_~g1~0.base))) (store .cse2 ~g1~0.offset (+ (select .cse2 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base))) (store .cse1 ~g1~0.offset (+ (- 1) (select .cse1 ~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))))) is different from false [2024-09-08 18:11:56,456 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1823 (Array Int Int)) (v_ArrVal_1821 (Array Int Int)) (~g1~0.offset Int) (v_ArrVal_1827 (Array Int Int)) (v_ArrVal_1825 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~g1~0.base (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1821) c_~g1~0.base))) (store .cse4 ~g1~0.offset (+ (select .cse4 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1823))) (or (< (select (select .cse0 |c_~#g~0.base|) |c_~#g~0.offset|) 1) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base (let ((.cse1 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse2 (select (store (store |c_#memory_int| c_~g1~0.base (let ((.cse3 (select .cse0 c_~g1~0.base))) (store .cse3 ~g1~0.offset (+ (- 1) (select .cse3 ~g1~0.offset))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1825) c_~g1~0.base))) (store .cse2 ~g1~0.offset (+ (select .cse2 ~g1~0.offset) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1827) c_~g1~0.base))) (store .cse1 ~g1~0.offset (+ (- 1) (select .cse1 ~g1~0.offset))))) |c_~#g~0.base|) |c_~#g~0.offset|) 1))))) is different from false [2024-09-08 18:11:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 24 not checked. [2024-09-08 18:11:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142084261] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 18:11:57,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 18:11:57,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 10] total 20 [2024-09-08 18:11:57,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943578891] [2024-09-08 18:11:57,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 18:11:57,500 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-08 18:11:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 18:11:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-08 18:11:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=151, Unknown=7, NotChecked=224, Total=462 [2024-09-08 18:11:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:57,501 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 18:11:57,502 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 8.333333333333334) internal successors, (175), 21 states have internal predecessors, (175), 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) [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:11:57,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:12:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 18:12:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:12:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 18:12:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-08 18:12:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 18:12:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-08 18:12:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-08 18:12:07,172 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-08 18:12:07,172 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-08 18:12:07,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-08 18:12:07,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-08 18:12:07,373 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-08 18:12:07,374 INFO L312 ceAbstractionStarter]: Result for error location t_funThread3of4ForFork0 was SAFE,SAFE (3/5) [2024-09-08 18:12:07,375 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:12:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 18:12:07,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 18:12:07,376 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 18:12:07,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (25)] Waiting until timeout for monitored process [2024-09-08 18:12:07,381 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 18:12:07,381 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of4ForFork0 ======== [2024-09-08 18:12:07,382 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@48b996f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 18:12:07,382 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations.