./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-Overflow-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-17 22:44:12,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 22:44:12,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-Overflow-32bit-GemCutter_Default.epf [2023-11-17 22:44:12,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-17 22:44:12,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-17 22:44:12,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 22:44:12,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-17 22:44:12,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-17 22:44:12,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 22:44:12,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 22:44:12,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 22:44:12,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 22:44:12,286 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 22:44:12,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 22:44:12,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 22:44:12,289 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 22:44:12,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 22:44:12,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 22:44:12,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 22:44:12,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 22:44:12,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 22:44:12,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 22:44:12,292 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-17 22:44:12,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-17 22:44:12,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 22:44:12,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 22:44:12,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 22:44:12,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 22:44:12,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 22:44:12,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 22:44:12,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:44:12,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 22:44:12,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 22:44:12,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 22:44:12,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 22:44:12,298 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-17 22:44:12,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 22:44:12,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-17 22:44:12,299 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-17 22:44:12,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-17 22:44:12,299 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-17 22:44:12,299 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-17 22:44:12,300 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-17 22:44:12,300 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2023-11-17 22:44:12,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 22:44:12,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 22:44:12,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 22:44:12,693 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 22:44:12,693 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 22:44:12,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-17 22:44:15,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 22:44:16,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 22:44:16,145 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-17 22:44:16,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/data/fdc1ce2f7/71eae494c5034a138d8c97d787fa718c/FLAG3d4c54537 [2023-11-17 22:44:16,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/data/fdc1ce2f7/71eae494c5034a138d8c97d787fa718c [2023-11-17 22:44:16,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 22:44:16,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-17 22:44:16,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 22:44:16,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 22:44:16,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 22:44:16,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:44:16" (1/1) ... [2023-11-17 22:44:16,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276aba6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:16, skipping insertion in model container [2023-11-17 22:44:16,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:44:16" (1/1) ... [2023-11-17 22:44:16,279 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 22:44:16,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:44:16,856 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 22:44:16,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:44:17,025 INFO L206 MainTranslator]: Completed translation [2023-11-17 22:44:17,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17 WrapperNode [2023-11-17 22:44:17,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 22:44:17,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 22:44:17,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 22:44:17,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 22:44:17,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,094 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-11-17 22:44:17,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 22:44:17,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 22:44:17,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 22:44:17,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 22:44:17,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 22:44:17,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 22:44:17,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 22:44:17,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 22:44:17,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (1/1) ... [2023-11-17 22:44:17,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:44:17,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:44:17,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 22:44:17,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 22:44:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 22:44:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 22:44:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 22:44:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 22:44:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 22:44:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 22:44:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 22:44:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 22:44:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 22:44:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 22:44:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 22:44:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 22:44:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 22:44:17,300 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 22:44:17,552 INFO L236 CfgBuilder]: Building ICFG [2023-11-17 22:44:17,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 22:44:18,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-17 22:44:18,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 22:44:18,030 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 22:44:18,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 10:44:18 BoogieIcfgContainer [2023-11-17 22:44:18,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 22:44:18,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 22:44:18,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 22:44:18,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 22:44:18,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 10:44:16" (1/3) ... [2023-11-17 22:44:18,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772473ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 10:44:18, skipping insertion in model container [2023-11-17 22:44:18,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:44:17" (2/3) ... [2023-11-17 22:44:18,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772473ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 10:44:18, skipping insertion in model container [2023-11-17 22:44:18,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 10:44:18" (3/3) ... [2023-11-17 22:44:18,047 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-11-17 22:44:18,056 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-17 22:44:18,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 22:44:18,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-17 22:44:18,068 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 22:44:18,217 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 22:44:18,275 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:44:18,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-17 22:44:18,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:44:18,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-17 22:44:18,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-17 22:44:18,337 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-17 22:44:18,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork0 ======== [2023-11-17 22:44:18,358 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c776646, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:44:18,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 22:44:18,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:18,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1469269948, now seen corresponding path program 1 times [2023-11-17 22:44:18,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148645054] [2023-11-17 22:44:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148645054] [2023-11-17 22:44:19,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148645054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:44:19,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:44:19,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 22:44:19,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428690299] [2023-11-17 22:44:19,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:44:19,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 22:44:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 22:44:19,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 22:44:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,236 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:19,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:19,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 22:44:19,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:19,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1382685339, now seen corresponding path program 1 times [2023-11-17 22:44:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012056649] [2023-11-17 22:44:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:19,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012056649] [2023-11-17 22:44:19,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012056649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:44:19,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:44:19,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 22:44:19,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915137845] [2023-11-17 22:44:19,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:44:19,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:44:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:44:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 22:44:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,866 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:19,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:19,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 22:44:19,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:19,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -936664504, now seen corresponding path program 1 times [2023-11-17 22:44:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90016743] [2023-11-17 22:44:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:22,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90016743] [2023-11-17 22:44:22,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90016743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:44:22,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:44:22,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 22:44:22,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177608403] [2023-11-17 22:44:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:44:22,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 22:44:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 22:44:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-17 22:44:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:22,372 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.55) internal successors, (91), 21 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:22,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:22,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:22,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:23,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 22:44:23,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:23,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1759874858, now seen corresponding path program 1 times [2023-11-17 22:44:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:23,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982238434] [2023-11-17 22:44:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:23,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982238434] [2023-11-17 22:44:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982238434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:44:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:44:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 22:44:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295489670] [2023-11-17 22:44:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:44:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 22:44:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 22:44:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 22:44:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:23,568 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 36.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:23,568 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:23,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:23,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:23,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:23,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 22:44:23,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:23,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:23,670 INFO L85 PathProgramCache]: Analyzing trace with hash -476663643, now seen corresponding path program 1 times [2023-11-17 22:44:23,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115106936] [2023-11-17 22:44:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115106936] [2023-11-17 22:44:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115106936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:44:25,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:44:25,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 22:44:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742179556] [2023-11-17 22:44:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:44:25,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 22:44:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 22:44:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-17 22:44:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:25,704 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:25,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:25,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:25,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:25,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:25,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:25,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:44:26,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 22:44:26,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:26,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1530642895, now seen corresponding path program 1 times [2023-11-17 22:44:26,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:26,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745803175] [2023-11-17 22:44:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:26,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745803175] [2023-11-17 22:44:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745803175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:44:31,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:44:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 22:44:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067689276] [2023-11-17 22:44:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:44:31,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 22:44:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 22:44:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-11-17 22:44:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:31,044 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:31,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.05) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:31,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:31,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:31,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:31,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:31,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:44:31,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 22:44:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 22:44:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 22:44:32,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1559170131, now seen corresponding path program 1 times [2023-11-17 22:44:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947367180] [2023-11-17 22:44:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:33,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:33,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947367180] [2023-11-17 22:44:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947367180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:44:33,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156392047] [2023-11-17 22:44:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:44:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:44:33,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:44:33,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 22:44:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:33,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 22:44:33,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:44:34,262 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 19 treesize of output 1 [2023-11-17 22:44:34,433 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 31 treesize of output 15 [2023-11-17 22:44:34,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 22:44:34,546 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 20 treesize of output 15 [2023-11-17 22:44:34,853 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-11-17 22:44:34,853 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 1 case distinctions, treesize of input 35 treesize of output 19 [2023-11-17 22:44:36,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:36,178 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 34 treesize of output 22 [2023-11-17 22:44:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:36,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:44:37,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:37,298 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2023-11-17 22:44:37,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:37,310 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 55 treesize of output 59 [2023-11-17 22:44:37,320 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 28 treesize of output 24 [2023-11-17 22:44:37,336 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 9 treesize of output 5 [2023-11-17 22:44:37,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:37,352 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 41 treesize of output 41 [2023-11-17 22:44:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:37,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156392047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:44:37,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:44:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2023-11-17 22:44:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774868685] [2023-11-17 22:44:37,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:44:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-17 22:44:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-17 22:44:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2127, Unknown=16, NotChecked=0, Total=2352 [2023-11-17 22:44:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:37,824 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:37,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 7.6875) internal successors, (369), 49 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:37,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:37,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:37,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:37,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:37,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-17 22:44:37,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2023-11-17 22:44:37,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 22:44:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 22:44:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 22:44:39,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 22:44:39,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-17 22:44:39,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-17 22:44:39,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:44:39,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1089633162, now seen corresponding path program 1 times [2023-11-17 22:44:39,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:44:39,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492385567] [2023-11-17 22:44:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:44:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:44:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492385567] [2023-11-17 22:44:43,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492385567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:44:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119482279] [2023-11-17 22:44:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:44:43,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:44:43,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:44:43,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:44:43,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2462e1-41c8-472a-ad95-438dc0d655f8/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 22:44:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:44:43,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-17 22:44:43,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:44:43,425 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-17 22:44:43,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 16 [2023-11-17 22:44:43,490 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 22:44:43,491 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 [2023-11-17 22:44:43,768 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 [2023-11-17 22:44:43,887 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 23 treesize of output 11 [2023-11-17 22:44:44,431 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 23 treesize of output 16 [2023-11-17 22:44:44,663 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 23 treesize of output 16 [2023-11-17 22:44:45,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 22:44:45,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2023-11-17 22:44:45,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-17 22:44:46,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 22:44:46,054 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 23 treesize of output 16 [2023-11-17 22:44:46,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 22:44:46,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-17 22:44:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:44:46,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:44:47,009 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) (+ 1 |c_t1Thread1of1ForFork0_enqueue_#t~post41#1|))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 1604)) 4) |c_~#queue~0.offset|) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647)) is different from false [2023-11-17 22:44:47,031 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 1604)) 4) |c_~#queue~0.offset|) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647)) is different from false [2023-11-17 22:44:47,040 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (store .cse1 .cse2 (+ (select .cse1 .cse2) 1)))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 (+ |c_~#queue~0.offset| 1604)) 4)) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647)) is different from false [2023-11-17 22:44:47,354 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse0 (select .cse2 .cse3))) (or (= 400 .cse0) (forall ((v_ArrVal_288 Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (or (< (select (let ((.cse1 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_288) .cse3 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse1 (+ |c_~#queue~0.offset| (* (select .cse1 (+ |c_~#queue~0.offset| 1604)) 4)) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (< (+ |c_t1Thread1of1ForFork0_enqueue_#t~post38#1| 1) v_ArrVal_288)))))) is different from false [2023-11-17 22:44:47,841 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 Int) (v_ArrVal_287 Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_287)) (.cse4 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse1 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse2 (select .cse0 .cse4))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_288) (= 400 .cse2) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 .cse1 v_ArrVal_288) .cse4 (+ .cse2 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse3 (+ (* 4 (select .cse3 (+ |c_~#queue~0.offset| 1604))) |c_~#queue~0.offset|) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647))))) is different from false [2023-11-17 22:44:47,869 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 Int) (v_ArrVal_287 Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (let ((.cse4 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse1 (let ((.cse5 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|))) (store .cse5 (+ (* (select .cse5 .cse4) 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_287)))) (let ((.cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse0 (select .cse1 .cse4))) (or (= 400 .cse0) (< (+ (select .cse1 .cse2) 1) v_ArrVal_288) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse1 .cse2 v_ArrVal_288) .cse4 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse3 (+ |c_~#queue~0.offset| (* (select .cse3 (+ |c_~#queue~0.offset| 1604)) 4)) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647)))))) is different from false [2023-11-17 22:44:47,921 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 Int) (v_ArrVal_287 Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_293 Int)) (let ((.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset| 1604))) (let ((.cse0 (let ((.cse5 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_#in~q#1.base|))) (store .cse5 (+ (* (select .cse5 .cse3) 4) |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset|) v_ArrVal_287)))) (let ((.cse1 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_#in~q#1.offset|)) (.cse4 (select .cse0 .cse3))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_288) (< (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_#in~q#1.base| (store (store .cse0 .cse1 v_ArrVal_288) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse2 (+ (* (select .cse2 (+ |c_~#queue~0.offset| 1604)) 4) |c_~#queue~0.offset|) v_ArrVal_293)) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (= 400 .cse4)))))) is different from false [2023-11-17 22:44:54,003 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 Int) (v_ArrVal_287 Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_285 (Array Int Int)) (v_ArrVal_284 (Array Int Int)) (v_ArrVal_293 Int)) (let ((.cse4 (+ |c_~#queue~0.offset| 1604)) (.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_284) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_285))) (let ((.cse0 (let ((.cse6 (select .cse5 |c_~#queue~0.base|))) (store .cse6 (+ (* (select .cse6 .cse4) 4) |c_~#queue~0.offset|) v_ArrVal_287)))) (let ((.cse2 (select .cse0 .cse4)) (.cse1 (+ 1608 |c_~#queue~0.offset|))) (or (< (+ 1 (select .cse0 .cse1)) v_ArrVal_288) (= 400 .cse2) (< (select (let ((.cse3 (select (store (store .cse5 |c_~#queue~0.base| (store (store .cse0 .cse1 v_ArrVal_288) .cse4 (+ .cse2 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse3 (+ (* (select .cse3 .cse4) 4) |c_~#queue~0.offset|) v_ArrVal_293)) .cse1) 2147483647)))))) is different from false [2023-11-17 22:44:54,483 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 Int) (v_ArrVal_287 Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_283 Int) (v_ArrVal_285 (Array Int Int)) (v_ArrVal_284 (Array Int Int)) (v_ArrVal_293 Int)) (let ((.cse2 (+ |c_~#queue~0.offset| 1604)) (.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base|) (+ 1608 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_283)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_284) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_285))) (let ((.cse4 (let ((.cse6 (select .cse3 |c_~#queue~0.base|))) (store .cse6 (+ |c_~#queue~0.offset| (* (select .cse6 .cse2) 4)) v_ArrVal_287)))) (let ((.cse0 (select .cse4 .cse2)) (.cse5 (+ 1608 |c_~#queue~0.offset|))) (or (= 400 .cse0) (< (select (let ((.cse1 (select (store (store .cse3 |c_~#queue~0.base| (store (store .cse4 .cse5 v_ArrVal_288) .cse2 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_292) |c_~#queue~0.base|))) (store .cse1 (+ |c_~#queue~0.offset| (* (select .cse1 .cse2) 4)) v_ArrVal_293)) .cse5) 2147483647) (< (+ (select .cse4 .cse5) 1) v_ArrVal_288) (< 0 v_ArrVal_283)))))) is different from false [2023-11-17 22:44:54,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:54,511 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 467 treesize of output 277 [2023-11-17 22:44:54,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:54,535 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 1339 treesize of output 1303 [2023-11-17 22:44:54,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 454 treesize of output 406 [2023-11-17 22:44:54,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 282 [2023-11-17 22:44:54,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 251 [2023-11-17 22:44:54,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:54,735 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 16 treesize of output 8 [2023-11-17 22:44:55,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 22:44:55,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 197 [2023-11-17 22:44:59,295 INFO L349 Elim1Store]: treesize reduction 14, result has 71.4 percent of original size [2023-11-17 22:44:59,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 90 [2023-11-17 22:44:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2023-11-17 22:44:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119482279] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:44:59,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:44:59,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 31] total 87 [2023-11-17 22:44:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901380672] [2023-11-17 22:44:59,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:44:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-11-17 22:44:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:44:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-11-17 22:44:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=5501, Unknown=73, NotChecked=1458, Total=7656 [2023-11-17 22:44:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:59,430 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:44:59,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 4.275862068965517) internal successors, (372), 88 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:44:59,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:44:59,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:44:59,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:44:59,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-17 22:44:59,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-17 22:44:59,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2023-11-17 22:44:59,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2023-11-17 22:44:59,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.