./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:12:14,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:14,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:14,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:14,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:14,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:14,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:14,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:14,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:14,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:14,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:14,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:14,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:14,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:14,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:14,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:14,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:14,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:14,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:14,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:14,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:14,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:14,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:14,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:14,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:14,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:14,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:14,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:14,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:14,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:14,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:14,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:14,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:14,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:14,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:14,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:14,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:14,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:14,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:14,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:14,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:14,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:12:14,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:14,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:14,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:14,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:14,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:14,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:14,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:14,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:14,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:14,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:14,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:12:14,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:12:14,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:12:14,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:12:14,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:14,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:14,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:14,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:14,285 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:12:14,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:12:14,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:14,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:14,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:14,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:14,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:14,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:14,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:14,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:14,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:14,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:14,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:12:14,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:12:14,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:14,289 INFO L138 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_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca [2022-11-02 21:12:14,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:14,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:14,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:14,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:14,705 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:14,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-02 21:12:14,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/data/6ff457827/b601265ed0a14123a11ea1a980877476/FLAGdcf588522 [2022-11-02 21:12:15,463 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:15,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-02 21:12:15,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/data/6ff457827/b601265ed0a14123a11ea1a980877476/FLAGdcf588522 [2022-11-02 21:12:15,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/data/6ff457827/b601265ed0a14123a11ea1a980877476 [2022-11-02 21:12:15,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:15,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:15,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:15,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:15,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:15,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:15" (1/1) ... [2022-11-02 21:12:15,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c4cd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:15, skipping insertion in model container [2022-11-02 21:12:15,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:15" (1/1) ... [2022-11-02 21:12:15,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:15,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:16,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-02 21:12:16,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:16,193 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:16,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-02 21:12:16,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:16,281 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:16,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16 WrapperNode [2022-11-02 21:12:16,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:16,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:16,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:16,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:16,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,370 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2022-11-02 21:12:16,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:16,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:16,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:16,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:16,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:16,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:16,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:16,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:16,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (1/1) ... [2022-11-02 21:12:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:16,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:16,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:16,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:12:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:12:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:12:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:12:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:12:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:12:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:12:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:12:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:12:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:12:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 21:12:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 21:12:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:12:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:12:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:12:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:12:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:12:16,548 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:12:16,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:16,785 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:17,372 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:17,607 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:17,607 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:12:17,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:17 BoogieIcfgContainer [2022-11-02 21:12:17,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:17,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:17,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:17,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:17,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:15" (1/3) ... [2022-11-02 21:12:17,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6846b13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:17, skipping insertion in model container [2022-11-02 21:12:17,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:16" (2/3) ... [2022-11-02 21:12:17,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6846b13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:17, skipping insertion in model container [2022-11-02 21:12:17,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:17" (3/3) ... [2022-11-02 21:12:17,627 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2022-11-02 21:12:17,647 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:12:17,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:17,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-02 21:12:17,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:12:17,792 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 21:12:17,839 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:12:17,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 191 transitions, 414 flow [2022-11-02 21:12:17,860 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 191 transitions, 414 flow [2022-11-02 21:12:17,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 191 transitions, 414 flow [2022-11-02 21:12:18,006 INFO L130 PetriNetUnfolder]: 12/187 cut-off events. [2022-11-02 21:12:18,007 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:12:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 187 events. 12/187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-11-02 21:12:18,017 INFO L118 LiptonReduction]: Number of co-enabled transitions 3864 [2022-11-02 21:12:32,141 INFO L133 LiptonReduction]: Checked pairs total: 6749 [2022-11-02 21:12:32,154 INFO L135 LiptonReduction]: Total number of compositions: 193 [2022-11-02 21:12:32,165 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2022-11-02 21:12:32,436 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3001 states, 2865 states have (on average 4.269109947643979) internal successors, (12231), 3000 states have internal predecessors, (12231), 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) [2022-11-02 21:12:32,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:32,466 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@40ea52e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:32,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-02 21:12:32,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 3001 states, 2865 states have (on average 4.269109947643979) internal successors, (12231), 3000 states have internal predecessors, (12231), 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) [2022-11-02 21:12:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 21:12:32,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:32,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 21:12:32,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash 26502, now seen corresponding path program 1 times [2022-11-02 21:12:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:32,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369237952] [2022-11-02 21:12:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:32,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:32,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369237952] [2022-11-02 21:12:32,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369237952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:32,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:32,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:12:32,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307861960] [2022-11-02 21:12:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:32,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:32,899 INFO L87 Difference]: Start difference. First operand has 3001 states, 2865 states have (on average 4.269109947643979) internal successors, (12231), 3000 states have internal predecessors, (12231), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-02 21:12:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:33,091 INFO L93 Difference]: Finished difference Result 2066 states and 8244 transitions. [2022-11-02 21:12:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:33,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-11-02 21:12:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:33,145 INFO L225 Difference]: With dead ends: 2066 [2022-11-02 21:12:33,146 INFO L226 Difference]: Without dead ends: 2066 [2022-11-02 21:12:33,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:33,151 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:33,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2022-11-02 21:12:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2066. [2022-11-02 21:12:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1994 states have (on average 4.1344032096288865) internal successors, (8244), 2065 states have internal predecessors, (8244), 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) [2022-11-02 21:12:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 8244 transitions. [2022-11-02 21:12:33,371 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 8244 transitions. Word has length 2 [2022-11-02 21:12:33,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:33,372 INFO L495 AbstractCegarLoop]: Abstraction has 2066 states and 8244 transitions. [2022-11-02 21:12:33,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-02 21:12:33,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 8244 transitions. [2022-11-02 21:12:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 21:12:33,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:33,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 21:12:33,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:12:33,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash 26503, now seen corresponding path program 1 times [2022-11-02 21:12:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:33,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574574148] [2022-11-02 21:12:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:33,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574574148] [2022-11-02 21:12:33,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574574148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:33,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:12:33,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048539644] [2022-11-02 21:12:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:33,617 INFO L87 Difference]: Start difference. First operand 2066 states and 8244 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-02 21:12:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:33,818 INFO L93 Difference]: Finished difference Result 4130 states and 16486 transitions. [2022-11-02 21:12:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:33,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-11-02 21:12:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:33,861 INFO L225 Difference]: With dead ends: 4130 [2022-11-02 21:12:33,862 INFO L226 Difference]: Without dead ends: 4130 [2022-11-02 21:12:33,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:33,864 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:33,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2022-11-02 21:12:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 2067. [2022-11-02 21:12:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1995 states have (on average 4.133333333333334) internal successors, (8246), 2066 states have internal predecessors, (8246), 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) [2022-11-02 21:12:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 8246 transitions. [2022-11-02 21:12:34,059 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 8246 transitions. Word has length 2 [2022-11-02 21:12:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:34,060 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 8246 transitions. [2022-11-02 21:12:34,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-02 21:12:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 8246 transitions. [2022-11-02 21:12:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:12:34,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:34,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:12:34,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:34,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 822397, now seen corresponding path program 1 times [2022-11-02 21:12:34,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:34,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169163601] [2022-11-02 21:12:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:34,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:34,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:34,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169163601] [2022-11-02 21:12:34,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169163601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152423989] [2022-11-02 21:12:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:34,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:34,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:34,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:12:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:34,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:12:34,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:34,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:34,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152423989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:34,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:34,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 21:12:34,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947091839] [2022-11-02 21:12:34,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:34,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:12:34,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:12:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:34,516 INFO L87 Difference]: Start difference. First operand 2067 states and 8246 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-02 21:12:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:35,174 INFO L93 Difference]: Finished difference Result 10322 states and 41212 transitions. [2022-11-02 21:12:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:12:35,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) Word has length 3 [2022-11-02 21:12:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:35,305 INFO L225 Difference]: With dead ends: 10322 [2022-11-02 21:12:35,305 INFO L226 Difference]: Without dead ends: 10322 [2022-11-02 21:12:35,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:35,312 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 245 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:35,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 5 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2022-11-02 21:12:35,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 2070. [2022-11-02 21:12:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1998 states have (on average 4.13013013013013) internal successors, (8252), 2069 states have internal predecessors, (8252), 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) [2022-11-02 21:12:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 8252 transitions. [2022-11-02 21:12:35,630 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 8252 transitions. Word has length 3 [2022-11-02 21:12:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:35,631 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 8252 transitions. [2022-11-02 21:12:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-02 21:12:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 8252 transitions. [2022-11-02 21:12:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:12:35,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:35,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:12:35,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:35,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:35,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1279987255, now seen corresponding path program 1 times [2022-11-02 21:12:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:35,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245486264] [2022-11-02 21:12:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:35,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:35,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:35,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245486264] [2022-11-02 21:12:35,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245486264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:35,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:35,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:35,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603996664] [2022-11-02 21:12:35,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:36,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:36,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:36,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:36,003 INFO L87 Difference]: Start difference. First operand 2070 states and 8252 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-02 21:12:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:36,235 INFO L93 Difference]: Finished difference Result 2924 states and 11579 transitions. [2022-11-02 21:12:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2022-11-02 21:12:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:36,259 INFO L225 Difference]: With dead ends: 2924 [2022-11-02 21:12:36,260 INFO L226 Difference]: Without dead ends: 2924 [2022-11-02 21:12:36,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:36,263 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:36,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:12:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2022-11-02 21:12:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2372. [2022-11-02 21:12:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2300 states have (on average 4.252173913043478) internal successors, (9780), 2371 states have internal predecessors, (9780), 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) [2022-11-02 21:12:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 9780 transitions. [2022-11-02 21:12:36,485 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 9780 transitions. Word has length 6 [2022-11-02 21:12:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:36,485 INFO L495 AbstractCegarLoop]: Abstraction has 2372 states and 9780 transitions. [2022-11-02 21:12:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-02 21:12:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 9780 transitions. [2022-11-02 21:12:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:12:36,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:36,487 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 21:12:36,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:12:36,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1268976377, now seen corresponding path program 2 times [2022-11-02 21:12:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:36,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095761108] [2022-11-02 21:12:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:36,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:36,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095761108] [2022-11-02 21:12:36,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095761108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:36,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713570198] [2022-11-02 21:12:36,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:12:36,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:36,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:36,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:36,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:12:36,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:12:36,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:36,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:12:36,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:12:36,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:36,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713570198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:36,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:12:36,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 21:12:36,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258874724] [2022-11-02 21:12:36,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:36,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:36,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:36,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:36,945 INFO L87 Difference]: Start difference. First operand 2372 states and 9780 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-02 21:12:37,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:37,054 INFO L93 Difference]: Finished difference Result 2371 states and 9779 transitions. [2022-11-02 21:12:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:37,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 6 [2022-11-02 21:12:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:37,143 INFO L225 Difference]: With dead ends: 2371 [2022-11-02 21:12:37,143 INFO L226 Difference]: Without dead ends: 2371 [2022-11-02 21:12:37,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:37,144 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:37,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2022-11-02 21:12:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2367. [2022-11-02 21:12:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2296 states have (on average 4.255662020905923) internal successors, (9771), 2366 states have internal predecessors, (9771), 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) [2022-11-02 21:12:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 9771 transitions. [2022-11-02 21:12:37,294 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 9771 transitions. Word has length 6 [2022-11-02 21:12:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:37,295 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 9771 transitions. [2022-11-02 21:12:37,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-02 21:12:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 9771 transitions. [2022-11-02 21:12:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:12:37,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:37,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:37,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:37,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1024897836, now seen corresponding path program 1 times [2022-11-02 21:12:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:37,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837235561] [2022-11-02 21:12:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:37,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837235561] [2022-11-02 21:12:37,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837235561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75328405] [2022-11-02 21:12:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:37,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:37,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:12:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:37,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:37,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75328405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:37,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:12:37,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-02 21:12:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218676425] [2022-11-02 21:12:37,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:37,802 INFO L87 Difference]: Start difference. First operand 2367 states and 9771 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-02 21:12:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:37,941 INFO L93 Difference]: Finished difference Result 2368 states and 9772 transitions. [2022-11-02 21:12:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:37,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2022-11-02 21:12:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:37,958 INFO L225 Difference]: With dead ends: 2368 [2022-11-02 21:12:37,958 INFO L226 Difference]: Without dead ends: 2368 [2022-11-02 21:12:37,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:37,959 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:37,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-11-02 21:12:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2022-11-02 21:12:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2297 states have (on average 4.2542446669569) internal successors, (9772), 2367 states have internal predecessors, (9772), 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) [2022-11-02 21:12:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 9772 transitions. [2022-11-02 21:12:38,056 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 9772 transitions. Word has length 7 [2022-11-02 21:12:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:38,057 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 9772 transitions. [2022-11-02 21:12:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-02 21:12:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 9772 transitions. [2022-11-02 21:12:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:12:38,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:38,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:38,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:38,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:38,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash -56897122, now seen corresponding path program 1 times [2022-11-02 21:12:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:38,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427497698] [2022-11-02 21:12:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:38,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:38,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427497698] [2022-11-02 21:12:38,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427497698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:38,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956185165] [2022-11-02 21:12:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:38,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:38,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:38,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:38,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:12:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:38,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:38,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:38,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:38,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956185165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:38,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:38,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-11-02 21:12:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876830193] [2022-11-02 21:12:38,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:12:38,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:12:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:12:38,739 INFO L87 Difference]: Start difference. First operand 2368 states and 9772 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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) [2022-11-02 21:12:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:39,726 INFO L93 Difference]: Finished difference Result 5404 states and 21019 transitions. [2022-11-02 21:12:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:12:39,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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) Word has length 8 [2022-11-02 21:12:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:39,774 INFO L225 Difference]: With dead ends: 5404 [2022-11-02 21:12:39,775 INFO L226 Difference]: Without dead ends: 5396 [2022-11-02 21:12:39,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:12:39,776 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 561 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:39,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 27 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:12:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2022-11-02 21:12:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 3874. [2022-11-02 21:12:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3803 states have (on average 4.358401262161451) internal successors, (16575), 3873 states have internal predecessors, (16575), 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) [2022-11-02 21:12:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 16575 transitions. [2022-11-02 21:12:40,064 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 16575 transitions. Word has length 8 [2022-11-02 21:12:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:40,064 INFO L495 AbstractCegarLoop]: Abstraction has 3874 states and 16575 transitions. [2022-11-02 21:12:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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) [2022-11-02 21:12:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 16575 transitions. [2022-11-02 21:12:40,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:12:40,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:40,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:40,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:40,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:40,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:40,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1570856283, now seen corresponding path program 1 times [2022-11-02 21:12:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:40,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799661315] [2022-11-02 21:12:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:40,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:40,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:40,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799661315] [2022-11-02 21:12:40,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799661315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:40,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:40,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262589885] [2022-11-02 21:12:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:40,369 INFO L87 Difference]: Start difference. First operand 3874 states and 16575 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-02 21:12:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:40,546 INFO L93 Difference]: Finished difference Result 5236 states and 22400 transitions. [2022-11-02 21:12:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:40,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-02 21:12:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:40,583 INFO L225 Difference]: With dead ends: 5236 [2022-11-02 21:12:40,584 INFO L226 Difference]: Without dead ends: 5236 [2022-11-02 21:12:40,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:40,586 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:40,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2022-11-02 21:12:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 4564. [2022-11-02 21:12:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4493 states have (on average 4.487202314711774) internal successors, (20161), 4563 states have internal predecessors, (20161), 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) [2022-11-02 21:12:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 20161 transitions. [2022-11-02 21:12:40,901 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 20161 transitions. Word has length 9 [2022-11-02 21:12:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:40,902 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 20161 transitions. [2022-11-02 21:12:40,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-02 21:12:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 20161 transitions. [2022-11-02 21:12:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:12:40,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:40,905 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:40,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:12:40,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -113646059, now seen corresponding path program 1 times [2022-11-02 21:12:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:40,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436870445] [2022-11-02 21:12:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:40,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:12:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:40,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436870445] [2022-11-02 21:12:40,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436870445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:40,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:40,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388869346] [2022-11-02 21:12:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:40,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:40,970 INFO L87 Difference]: Start difference. First operand 4564 states and 20161 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 21:12:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:41,126 INFO L93 Difference]: Finished difference Result 4212 states and 18327 transitions. [2022-11-02 21:12:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:41,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 9 [2022-11-02 21:12:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:41,159 INFO L225 Difference]: With dead ends: 4212 [2022-11-02 21:12:41,159 INFO L226 Difference]: Without dead ends: 4212 [2022-11-02 21:12:41,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:41,161 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 29 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:41,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-11-02 21:12:41,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 4212. [2022-11-02 21:12:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4165 states have (on average 4.400240096038416) internal successors, (18327), 4211 states have internal predecessors, (18327), 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) [2022-11-02 21:12:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 18327 transitions. [2022-11-02 21:12:41,461 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 18327 transitions. Word has length 9 [2022-11-02 21:12:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:41,461 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 18327 transitions. [2022-11-02 21:12:41,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 21:12:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 18327 transitions. [2022-11-02 21:12:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:12:41,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:41,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:41,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:12:41,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1446053422, now seen corresponding path program 1 times [2022-11-02 21:12:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:41,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924946315] [2022-11-02 21:12:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:42,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:42,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924946315] [2022-11-02 21:12:42,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924946315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:42,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701214186] [2022-11-02 21:12:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:42,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:42,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:42,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:42,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:12:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:42,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:12:42,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:42,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:12:42,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:42,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:42,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:42,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:42,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:42,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:42,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:42,742 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_379 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_379) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-11-02 21:12:42,765 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_379 (Array Int Int)) (v_ArrVal_378 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_378) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_379) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-11-02 21:12:42,787 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_377 (Array Int Int)) (v_ArrVal_379 (Array Int Int)) (v_ArrVal_378 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_377) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_378) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_379) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2022-11-02 21:12:42,814 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:42,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-02 21:12:42,844 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:42,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 977 treesize of output 947 [2022-11-02 21:12:42,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 934 treesize of output 918 [2022-11-02 21:12:42,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 918 treesize of output 854 [2022-11-02 21:12:42,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 854 treesize of output 822 [2022-11-02 21:12:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 21:12:45,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701214186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:45,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:45,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-02 21:12:45,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488474600] [2022-11-02 21:12:45,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:45,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:12:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:12:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=190, Unknown=3, NotChecked=90, Total=342 [2022-11-02 21:12:45,122 INFO L87 Difference]: Start difference. First operand 4212 states and 18327 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2022-11-02 21:12:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:45,878 INFO L93 Difference]: Finished difference Result 5423 states and 22642 transitions. [2022-11-02 21:12:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:12:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) Word has length 10 [2022-11-02 21:12:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:45,912 INFO L225 Difference]: With dead ends: 5423 [2022-11-02 21:12:45,912 INFO L226 Difference]: Without dead ends: 5423 [2022-11-02 21:12:45,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=255, Unknown=3, NotChecked=108, Total=462 [2022-11-02 21:12:45,913 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 111 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:45,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 10 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 445 Invalid, 0 Unknown, 289 Unchecked, 0.5s Time] [2022-11-02 21:12:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2022-11-02 21:12:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4292. [2022-11-02 21:12:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4245 states have (on average 4.4171967020023555) internal successors, (18751), 4291 states have internal predecessors, (18751), 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) [2022-11-02 21:12:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 18751 transitions. [2022-11-02 21:12:46,084 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 18751 transitions. Word has length 10 [2022-11-02 21:12:46,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:46,085 INFO L495 AbstractCegarLoop]: Abstraction has 4292 states and 18751 transitions. [2022-11-02 21:12:46,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2022-11-02 21:12:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 18751 transitions. [2022-11-02 21:12:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:12:46,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:46,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:46,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:46,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:12:46,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1451903411, now seen corresponding path program 1 times [2022-11-02 21:12:46,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:46,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527217019] [2022-11-02 21:12:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:46,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:46,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527217019] [2022-11-02 21:12:46,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527217019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:46,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873373534] [2022-11-02 21:12:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:46,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:46,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:46,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:46,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:12:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:46,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:46,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:46,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873373534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:46,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:46,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-11-02 21:12:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478160721] [2022-11-02 21:12:46,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:12:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:12:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:12:46,715 INFO L87 Difference]: Start difference. First operand 4292 states and 18751 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 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) [2022-11-02 21:12:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:47,502 INFO L93 Difference]: Finished difference Result 4826 states and 19418 transitions. [2022-11-02 21:12:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:12:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 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) Word has length 10 [2022-11-02 21:12:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:47,542 INFO L225 Difference]: With dead ends: 4826 [2022-11-02 21:12:47,542 INFO L226 Difference]: Without dead ends: 4752 [2022-11-02 21:12:47,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:12:47,544 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 360 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:47,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 28 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:12:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2022-11-02 21:12:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4009. [2022-11-02 21:12:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 3978 states have (on average 4.244595274007039) internal successors, (16885), 4008 states have internal predecessors, (16885), 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) [2022-11-02 21:12:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 16885 transitions. [2022-11-02 21:12:47,784 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 16885 transitions. Word has length 10 [2022-11-02 21:12:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:47,785 INFO L495 AbstractCegarLoop]: Abstraction has 4009 states and 16885 transitions. [2022-11-02 21:12:47,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 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) [2022-11-02 21:12:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 16885 transitions. [2022-11-02 21:12:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:12:47,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:47,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:47,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:48,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:48,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash 771940841, now seen corresponding path program 2 times [2022-11-02 21:12:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:48,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854469512] [2022-11-02 21:12:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:12:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:48,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854469512] [2022-11-02 21:12:48,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854469512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:48,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514276034] [2022-11-02 21:12:48,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:12:48,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:48,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:48,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:48,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:12:48,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:12:48,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:48,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:12:48,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:12:48,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:48,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514276034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:48,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:12:48,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-02 21:12:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000927370] [2022-11-02 21:12:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:48,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:48,288 INFO L87 Difference]: Start difference. First operand 4009 states and 16885 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-02 21:12:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:48,371 INFO L93 Difference]: Finished difference Result 2967 states and 12490 transitions. [2022-11-02 21:12:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 10 [2022-11-02 21:12:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:48,391 INFO L225 Difference]: With dead ends: 2967 [2022-11-02 21:12:48,391 INFO L226 Difference]: Without dead ends: 2901 [2022-11-02 21:12:48,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:48,393 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:48,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-11-02 21:12:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1920. [2022-11-02 21:12:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1915 states have (on average 4.0365535248041775) internal successors, (7730), 1919 states have internal predecessors, (7730), 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) [2022-11-02 21:12:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 7730 transitions. [2022-11-02 21:12:48,489 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 7730 transitions. Word has length 10 [2022-11-02 21:12:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:48,489 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 7730 transitions. [2022-11-02 21:12:48,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-02 21:12:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 7730 transitions. [2022-11-02 21:12:48,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:48,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:48,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:48,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:48,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:12:48,707 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1877815937, now seen corresponding path program 1 times [2022-11-02 21:12:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175982447] [2022-11-02 21:12:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175982447] [2022-11-02 21:12:48,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175982447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:48,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:48,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:12:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071601471] [2022-11-02 21:12:48,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:48,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:48,765 INFO L87 Difference]: Start difference. First operand 1920 states and 7730 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-02 21:12:48,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:48,857 INFO L93 Difference]: Finished difference Result 1810 states and 7245 transitions. [2022-11-02 21:12:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:48,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2022-11-02 21:12:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:48,867 INFO L225 Difference]: With dead ends: 1810 [2022-11-02 21:12:48,868 INFO L226 Difference]: Without dead ends: 1810 [2022-11-02 21:12:48,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:48,869 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:48,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-11-02 21:12:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-11-02 21:12:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1805 states have (on average 4.013850415512465) internal successors, (7245), 1809 states have internal predecessors, (7245), 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) [2022-11-02 21:12:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 7245 transitions. [2022-11-02 21:12:48,938 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 7245 transitions. Word has length 11 [2022-11-02 21:12:48,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:48,938 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 7245 transitions. [2022-11-02 21:12:48,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-02 21:12:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 7245 transitions. [2022-11-02 21:12:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:48,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:48,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:12:48,940 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1877816652, now seen corresponding path program 1 times [2022-11-02 21:12:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:48,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525951037] [2022-11-02 21:12:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:48,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:49,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525951037] [2022-11-02 21:12:49,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525951037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:49,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42545237] [2022-11-02 21:12:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:49,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:49,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:49,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:12:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:49,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:12:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:49,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:12:49,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:49,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:49,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:49,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:49,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:49,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:49,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 21:12:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:49,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:50,051 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_579) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-11-02 21:12:50,067 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array Int Int)) (v_ArrVal_578 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_578) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_579) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-11-02 21:12:50,080 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array Int Int)) (v_ArrVal_578 (Array Int Int)) (v_ArrVal_577 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_578) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_579) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-11-02 21:12:50,097 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array Int Int)) (v_ArrVal_578 (Array Int Int)) (v_ArrVal_577 (Array Int Int)) (v_ArrVal_576 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_576) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_578) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2022-11-02 21:12:50,127 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:50,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-02 21:12:50,138 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:50,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 485 treesize of output 479 [2022-11-02 21:12:50,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 466 treesize of output 434 [2022-11-02 21:12:50,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 434 treesize of output 426 [2022-11-02 21:12:50,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 426 treesize of output 410 [2022-11-02 21:12:50,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 206 treesize of output 202 [2022-11-02 21:12:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 21:12:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42545237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:50,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:50,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-02 21:12:50,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338016980] [2022-11-02 21:12:50,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 21:12:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 21:12:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=277, Unknown=4, NotChecked=148, Total=506 [2022-11-02 21:12:50,583 INFO L87 Difference]: Start difference. First operand 1810 states and 7245 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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) [2022-11-02 21:12:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:51,408 INFO L93 Difference]: Finished difference Result 2380 states and 9487 transitions. [2022-11-02 21:12:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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) Word has length 11 [2022-11-02 21:12:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:51,421 INFO L225 Difference]: With dead ends: 2380 [2022-11-02 21:12:51,421 INFO L226 Difference]: Without dead ends: 2380 [2022-11-02 21:12:51,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=429, Unknown=4, NotChecked=188, Total=756 [2022-11-02 21:12:51,422 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 268 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:51,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 2 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 179 Invalid, 0 Unknown, 277 Unchecked, 0.3s Time] [2022-11-02 21:12:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-11-02 21:12:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2122. [2022-11-02 21:12:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2117 states have (on average 4.125649504015116) internal successors, (8734), 2121 states have internal predecessors, (8734), 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) [2022-11-02 21:12:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8734 transitions. [2022-11-02 21:12:51,502 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8734 transitions. Word has length 11 [2022-11-02 21:12:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:51,502 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 8734 transitions. [2022-11-02 21:12:51,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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) [2022-11-02 21:12:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8734 transitions. [2022-11-02 21:12:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:51,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:51,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:51,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:51,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:12:51,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:51,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1877979929, now seen corresponding path program 1 times [2022-11-02 21:12:51,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:51,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953392414] [2022-11-02 21:12:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:51,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:51,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953392414] [2022-11-02 21:12:51,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953392414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:51,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170767870] [2022-11-02 21:12:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:51,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:51,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:51,879 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:51,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:12:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:52,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:52,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:52,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:52,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170767870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:52,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:52,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 21:12:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538042627] [2022-11-02 21:12:52,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:52,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:12:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:12:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:12:52,164 INFO L87 Difference]: Start difference. First operand 2122 states and 8734 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) [2022-11-02 21:12:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:52,660 INFO L93 Difference]: Finished difference Result 1960 states and 7484 transitions. [2022-11-02 21:12:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) Word has length 11 [2022-11-02 21:12:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:52,668 INFO L225 Difference]: With dead ends: 1960 [2022-11-02 21:12:52,668 INFO L226 Difference]: Without dead ends: 1774 [2022-11-02 21:12:52,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:52,672 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 191 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:52,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 5 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-11-02 21:12:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1590. [2022-11-02 21:12:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1585 states have (on average 3.9356466876971608) internal successors, (6238), 1589 states have internal predecessors, (6238), 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) [2022-11-02 21:12:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 6238 transitions. [2022-11-02 21:12:52,728 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 6238 transitions. Word has length 11 [2022-11-02 21:12:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:52,728 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 6238 transitions. [2022-11-02 21:12:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) [2022-11-02 21:12:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 6238 transitions. [2022-11-02 21:12:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:12:52,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:52,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:52,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:12:52,943 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1917247665, now seen corresponding path program 1 times [2022-11-02 21:12:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:52,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499583434] [2022-11-02 21:12:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:53,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499583434] [2022-11-02 21:12:53,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499583434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:53,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:53,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:12:53,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321493083] [2022-11-02 21:12:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:53,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:53,033 INFO L87 Difference]: Start difference. First operand 1590 states and 6238 transitions. Second operand has 3 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) [2022-11-02 21:12:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:53,115 INFO L93 Difference]: Finished difference Result 1454 states and 5614 transitions. [2022-11-02 21:12:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:53,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 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) Word has length 12 [2022-11-02 21:12:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:53,122 INFO L225 Difference]: With dead ends: 1454 [2022-11-02 21:12:53,122 INFO L226 Difference]: Without dead ends: 1454 [2022-11-02 21:12:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:53,123 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:53,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-11-02 21:12:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1454. [2022-11-02 21:12:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1449 states have (on average 3.8743961352657004) internal successors, (5614), 1453 states have internal predecessors, (5614), 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) [2022-11-02 21:12:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5614 transitions. [2022-11-02 21:12:53,173 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5614 transitions. Word has length 12 [2022-11-02 21:12:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:53,174 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 5614 transitions. [2022-11-02 21:12:53,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-02 21:12:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5614 transitions. [2022-11-02 21:12:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:12:53,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:53,176 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:53,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:12:53,176 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:53,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash -268477263, now seen corresponding path program 2 times [2022-11-02 21:12:53,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:53,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880412310] [2022-11-02 21:12:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:53,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:53,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880412310] [2022-11-02 21:12:53,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880412310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:53,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599279066] [2022-11-02 21:12:53,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:12:53,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:53,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:53,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:12:54,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:12:54,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:54,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 21:12:54,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:54,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:54,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:54,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:54,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-11-02 21:12:54,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:12:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:54,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:12:54,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:54,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 21:12:54,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:12:54,461 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 21:12:54,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2022-11-02 21:12:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:54,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:54,597 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_742 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_742) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2022-11-02 21:12:54,612 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_742 (Array Int Int)) (v_ArrVal_741 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_741) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_742) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2022-11-02 21:12:54,628 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_740 (Array Int Int)) (v_ArrVal_742 (Array Int Int)) (v_ArrVal_741 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_740) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_741) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_742) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2022-11-02 21:12:54,656 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:54,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-02 21:12:54,669 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:54,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 277 treesize of output 267 [2022-11-02 21:12:54,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 254 treesize of output 222 [2022-11-02 21:12:54,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 222 treesize of output 214 [2022-11-02 21:12:54,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 214 treesize of output 198 [2022-11-02 21:12:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 21:12:55,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599279066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:55,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:55,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-02 21:12:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032626057] [2022-11-02 21:12:55,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:12:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:55,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:12:55,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=432, Unknown=3, NotChecked=132, Total=650 [2022-11-02 21:12:55,084 INFO L87 Difference]: Start difference. First operand 1454 states and 5614 transitions. Second operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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) [2022-11-02 21:12:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:56,197 INFO L93 Difference]: Finished difference Result 1736 states and 6547 transitions. [2022-11-02 21:12:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:12:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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) Word has length 12 [2022-11-02 21:12:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:56,205 INFO L225 Difference]: With dead ends: 1736 [2022-11-02 21:12:56,205 INFO L226 Difference]: Without dead ends: 1736 [2022-11-02 21:12:56,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=744, Unknown=3, NotChecked=174, Total=1056 [2022-11-02 21:12:56,207 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 121 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:56,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 18 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 800 Invalid, 0 Unknown, 310 Unchecked, 0.7s Time] [2022-11-02 21:12:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-02 21:12:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1502. [2022-11-02 21:12:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1497 states have (on average 3.888443553774215) internal successors, (5821), 1501 states have internal predecessors, (5821), 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) [2022-11-02 21:12:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5821 transitions. [2022-11-02 21:12:56,271 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5821 transitions. Word has length 12 [2022-11-02 21:12:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:56,272 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 5821 transitions. [2022-11-02 21:12:56,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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) [2022-11-02 21:12:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5821 transitions. [2022-11-02 21:12:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:12:56,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:56,275 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:56,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:56,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:12:56,495 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:12:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 272204219, now seen corresponding path program 1 times [2022-11-02 21:12:56,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:56,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411389147] [2022-11-02 21:12:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:56,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:57,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:57,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411389147] [2022-11-02 21:12:57,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411389147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:57,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113200327] [2022-11-02 21:12:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:57,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:57,502 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:57,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:12:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:57,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 21:12:57,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:57,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:12:57,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:57,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:12:57,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:57,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:12:58,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:58,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:12:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:58,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:12:58,148 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 21:12:58,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2022-11-02 21:12:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:58,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:58,285 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_818 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_818) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2022-11-02 21:12:58,296 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_818 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_817) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_818) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2022-11-02 21:12:58,309 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_816 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_816) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_817) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_818) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2022-11-02 21:12:58,324 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_816 (Array Int Int)) (v_ArrVal_815 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_815) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_816) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_817) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_818) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2022-11-02 21:12:58,339 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:58,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-02 21:12:58,352 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:12:58,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 549 treesize of output 539 [2022-11-02 21:12:58,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 526 treesize of output 462 [2022-11-02 21:12:58,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 462 treesize of output 430 [2022-11-02 21:12:58,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 430 treesize of output 422 [2022-11-02 21:12:58,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 422 treesize of output 406 [2022-11-02 21:12:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 21:12:58,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113200327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:58,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:58,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 21:12:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402754225] [2022-11-02 21:12:58,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:58,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 21:12:58,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 21:12:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=517, Unknown=4, NotChecked=196, Total=812 [2022-11-02 21:12:58,971 INFO L87 Difference]: Start difference. First operand 1502 states and 5821 transitions. Second operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 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) [2022-11-02 21:13:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:00,671 INFO L93 Difference]: Finished difference Result 1852 states and 7001 transitions. [2022-11-02 21:13:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:13:00,671 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 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) Word has length 13 [2022-11-02 21:13:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:00,677 INFO L225 Difference]: With dead ends: 1852 [2022-11-02 21:13:00,677 INFO L226 Difference]: Without dead ends: 1852 [2022-11-02 21:13:00,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=177, Invalid=827, Unknown=4, NotChecked=252, Total=1260 [2022-11-02 21:13:00,678 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 324 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 473 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:00,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 15 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1003 Invalid, 0 Unknown, 473 Unchecked, 0.9s Time] [2022-11-02 21:13:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-11-02 21:13:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1590. [2022-11-02 21:13:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1585 states have (on average 3.9381703470031546) internal successors, (6242), 1589 states have internal predecessors, (6242), 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) [2022-11-02 21:13:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 6242 transitions. [2022-11-02 21:13:00,736 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 6242 transitions. Word has length 13 [2022-11-02 21:13:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:00,737 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 6242 transitions. [2022-11-02 21:13:00,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 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) [2022-11-02 21:13:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 6242 transitions. [2022-11-02 21:13:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:13:00,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:00,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:00,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:00,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 21:13:00,963 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:13:00,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 267142632, now seen corresponding path program 3 times [2022-11-02 21:13:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:00,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315360818] [2022-11-02 21:13:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315360818] [2022-11-02 21:13:01,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315360818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:13:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150084208] [2022-11-02 21:13:01,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:13:01,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:01,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:01,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:13:01,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:13:01,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:13:01,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:13:01,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:01,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:01,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150084208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:01,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:13:01,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 21:13:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71485015] [2022-11-02 21:13:01,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:01,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:13:01,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:13:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:13:01,584 INFO L87 Difference]: Start difference. First operand 1590 states and 6242 transitions. Second operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 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) [2022-11-02 21:13:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:02,522 INFO L93 Difference]: Finished difference Result 2638 states and 9870 transitions. [2022-11-02 21:13:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:13:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 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) Word has length 13 [2022-11-02 21:13:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:02,528 INFO L225 Difference]: With dead ends: 2638 [2022-11-02 21:13:02,529 INFO L226 Difference]: Without dead ends: 2470 [2022-11-02 21:13:02,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:13:02,530 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 531 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:02,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 6 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:13:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-11-02 21:13:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1980. [2022-11-02 21:13:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1975 states have (on average 3.9873417721518987) internal successors, (7875), 1979 states have internal predecessors, (7875), 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) [2022-11-02 21:13:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 7875 transitions. [2022-11-02 21:13:02,599 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 7875 transitions. Word has length 13 [2022-11-02 21:13:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:02,599 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 7875 transitions. [2022-11-02 21:13:02,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 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) [2022-11-02 21:13:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 7875 transitions. [2022-11-02 21:13:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:13:02,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:02,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:02,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:02,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:02,831 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:13:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -65989988, now seen corresponding path program 1 times [2022-11-02 21:13:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:02,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012736090] [2022-11-02 21:13:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:02,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:13:02,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:02,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012736090] [2022-11-02 21:13:02,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012736090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:02,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:02,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:13:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901481683] [2022-11-02 21:13:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:02,929 INFO L87 Difference]: Start difference. First operand 1980 states and 7875 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-11-02 21:13:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:03,021 INFO L93 Difference]: Finished difference Result 1882 states and 7425 transitions. [2022-11-02 21:13:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) Word has length 14 [2022-11-02 21:13:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:03,030 INFO L225 Difference]: With dead ends: 1882 [2022-11-02 21:13:03,030 INFO L226 Difference]: Without dead ends: 1882 [2022-11-02 21:13:03,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:03,032 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:03,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:13:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2022-11-02 21:13:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1882. [2022-11-02 21:13:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1877 states have (on average 3.955780500799148) internal successors, (7425), 1881 states have internal predecessors, (7425), 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) [2022-11-02 21:13:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7425 transitions. [2022-11-02 21:13:03,102 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7425 transitions. Word has length 14 [2022-11-02 21:13:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 7425 transitions. [2022-11-02 21:13:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-11-02 21:13:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7425 transitions. [2022-11-02 21:13:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:13:03,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:03,106 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:03,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:13:03,107 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:13:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:03,108 INFO L85 PathProgramCache]: Analyzing trace with hash 810978098, now seen corresponding path program 4 times [2022-11-02 21:13:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:03,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718018993] [2022-11-02 21:13:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:03,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:03,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718018993] [2022-11-02 21:13:03,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718018993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:13:03,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529429023] [2022-11-02 21:13:03,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:13:03,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:03,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:03,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:03,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:13:04,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:13:04,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:13:04,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:13:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:04,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:13:04,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:04,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:04,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:04,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:04,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:04,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:04,411 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 21:13:04,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2022-11-02 21:13:04,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 22 [2022-11-02 21:13:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:04,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:04,615 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_995 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_995) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483649)) is different from false [2022-11-02 21:13:04,627 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_995 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_995) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483649)) is different from false [2022-11-02 21:13:04,640 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_993 (Array Int Int)) (v_ArrVal_995 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_993) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2022-11-02 21:13:04,653 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:13:04,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-02 21:13:04,668 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:13:04,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1105 treesize of output 1059 [2022-11-02 21:13:04,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1046 treesize of output 918 [2022-11-02 21:13:04,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 918 treesize of output 854 [2022-11-02 21:13:04,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 443 treesize of output 411 [2022-11-02 21:13:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 21:13:05,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529429023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:05,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:13:05,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-02 21:13:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432599052] [2022-11-02 21:13:05,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:05,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 21:13:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 21:13:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=723, Unknown=3, NotChecked=168, Total=992 [2022-11-02 21:13:05,878 INFO L87 Difference]: Start difference. First operand 1882 states and 7425 transitions. Second operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2022-11-02 21:13:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:08,126 INFO L93 Difference]: Finished difference Result 2198 states and 8325 transitions. [2022-11-02 21:13:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:13:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) Word has length 14 [2022-11-02 21:13:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:08,135 INFO L225 Difference]: With dead ends: 2198 [2022-11-02 21:13:08,135 INFO L226 Difference]: Without dead ends: 2198 [2022-11-02 21:13:08,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=1222, Unknown=3, NotChecked=222, Total=1640 [2022-11-02 21:13:08,136 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 245 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 358 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:08,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 26 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1791 Invalid, 0 Unknown, 358 Unchecked, 1.4s Time] [2022-11-02 21:13:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2022-11-02 21:13:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1898. [2022-11-02 21:13:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1893 states have (on average 3.964606444796619) internal successors, (7505), 1897 states have internal predecessors, (7505), 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) [2022-11-02 21:13:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 7505 transitions. [2022-11-02 21:13:08,199 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 7505 transitions. Word has length 14 [2022-11-02 21:13:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:08,201 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 7505 transitions. [2022-11-02 21:13:08,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2022-11-02 21:13:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 7505 transitions. [2022-11-02 21:13:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:13:08,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:08,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:08,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:08,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:08,421 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 21:13:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2045686557, now seen corresponding path program 1 times [2022-11-02 21:13:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:08,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747751882] [2022-11-02 21:13:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747751882] [2022-11-02 21:13:08,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747751882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:13:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852278456] [2022-11-02 21:13:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:08,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:08,840 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:08,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2401a6f-f11d-4c10-b954-8ac4516988d8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:13:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:09,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:13:09,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:09,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:13:09,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:09,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:09,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:09,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:09,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:13:09,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 [2022-11-02 21:13:09,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-02 21:13:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:09,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:09,388 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1065 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1065) c_~A~0.base) c_~A~0.offset)))) is different from false [2022-11-02 21:13:09,399 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1065 (Array Int Int)) (v_ArrVal_1064 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1064) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1065) c_~A~0.base) c_~A~0.offset)))) is different from false [2022-11-02 21:13:09,413 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1065 (Array Int Int)) (v_ArrVal_1064 (Array Int Int)) (v_ArrVal_1063 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1064) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1065) c_~A~0.base) c_~A~0.offset)))) is different from false [2022-11-02 21:13:09,428 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1065 (Array Int Int)) (v_ArrVal_1064 (Array Int Int)) (v_ArrVal_1063 (Array Int Int)) (v_ArrVal_1062 (Array Int Int))) (< 0 (+ (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1062) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1064) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1065) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483650))) is different from false [2022-11-02 21:13:09,442 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:13:09,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-02 21:13:09,460 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:13:09,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4387 treesize of output 4325 [2022-11-02 21:13:09,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2155 treesize of output 2027 [2022-11-02 21:13:09,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4182 treesize of output 4118 [2022-11-02 21:13:09,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4118 treesize of output 4086 [2022-11-02 21:13:09,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4086 treesize of output 3830