./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/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_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/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_e17347ef-e288-4535-a418-d61e75a56619/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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- 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 20:58:51,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:58:51,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:58:51,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:58:51,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:58:51,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:58:51,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:58:51,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:58:51,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:58:51,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:58:51,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:58:51,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:58:51,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:58:51,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:58:51,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:58:51,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:58:51,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:58:51,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:58:51,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:58:51,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:58:51,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:58:51,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:58:51,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:58:51,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:58:51,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:58:51,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:58:51,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:58:51,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:58:51,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:58:51,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:58:51,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:58:51,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:58:51,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:58:51,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:58:51,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:58:51,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:58:51,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:58:51,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:58:51,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:58:51,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:58:51,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:58:51,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:58:51,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:58:51,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:58:51,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:58:51,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:58:51,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:58:51,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:58:51,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:58:51,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:58:51,321 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:58:51,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:58:51,322 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:58:51,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:58:51,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:58:51,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:58:51,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:58:51,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:58:51,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:58:51,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:58:51,324 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:58:51,324 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:58:51,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:58:51,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:58:51,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:58:51,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:58:51,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:58:51,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:58:51,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:51,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:58:51,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:58:51,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:58:51,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:58:51,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:58:51,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:58:51,327 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_e17347ef-e288-4535-a418-d61e75a56619/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-11-02 20:58:51,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:58:51,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:58:51,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:58:51,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:58:51,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:58:51,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-02 20:58:51,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/data/800983055/500c276a395b4e6a84fb29980cb4df21/FLAG61860655c [2022-11-02 20:58:52,273 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:58:52,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-02 20:58:52,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/data/800983055/500c276a395b4e6a84fb29980cb4df21/FLAG61860655c [2022-11-02 20:58:52,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/data/800983055/500c276a395b4e6a84fb29980cb4df21 [2022-11-02 20:58:52,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:58:52,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:58:52,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:52,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:58:52,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:58:52,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:52" (1/1) ... [2022-11-02 20:58:52,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f663f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:52, skipping insertion in model container [2022-11-02 20:58:52,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:52" (1/1) ... [2022-11-02 20:58:52,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:58:52,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:58:52,930 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_e17347ef-e288-4535-a418-d61e75a56619/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-02 20:58:52,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:52,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:58:52,999 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_e17347ef-e288-4535-a418-d61e75a56619/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-02 20:58:53,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:53,036 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:58:53,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53 WrapperNode [2022-11-02 20:58:53,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:53,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:53,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:58:53,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:58:53,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,113 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 125 [2022-11-02 20:58:53,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:53,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:58:53,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:58:53,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:58:53,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:58:53,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:58:53,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:58:53,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:58:53,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (1/1) ... [2022-11-02 20:58:53,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:53,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:58:53,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:58:53,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:58:53,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:58:53,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:58:53,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:58:53,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:58:53,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:58:53,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:58:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:58:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:58:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:58:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:58:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:58:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:58:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:58:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:58:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:58:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:58:53,262 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 20:58:53,480 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:58:53,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:58:53,988 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:58:54,025 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:58:54,026 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:58:54,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:54 BoogieIcfgContainer [2022-11-02 20:58:54,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:58:54,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:58:54,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:58:54,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:58:54,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:52" (1/3) ... [2022-11-02 20:58:54,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1068d92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:54, skipping insertion in model container [2022-11-02 20:58:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:53" (2/3) ... [2022-11-02 20:58:54,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1068d92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:54, skipping insertion in model container [2022-11-02 20:58:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:54" (3/3) ... [2022-11-02 20:58:54,052 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-11-02 20:58:54,063 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:58:54,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:58:54,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 20:58:54,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:58:54,194 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:58:54,262 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:58:54,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 434 flow [2022-11-02 20:58:54,280 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 434 flow [2022-11-02 20:58:54,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 434 flow [2022-11-02 20:58:54,395 INFO L130 PetriNetUnfolder]: 16/202 cut-off events. [2022-11-02 20:58:54,396 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:58:54,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 202 events. 16/202 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 158. Up to 3 conditions per place. [2022-11-02 20:58:54,406 INFO L118 LiptonReduction]: Number of co-enabled transitions 2680 [2022-11-02 20:59:03,012 INFO L133 LiptonReduction]: Checked pairs total: 4943 [2022-11-02 20:59:03,013 INFO L135 LiptonReduction]: Total number of compositions: 214 [2022-11-02 20:59:03,022 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 42 transitions, 108 flow [2022-11-02 20:59:03,089 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 516 states, 486 states have (on average 3.6358024691358026) internal successors, (1767), 515 states have internal predecessors, (1767), 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 20:59:03,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:03,116 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;@65305512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:03,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-02 20:59:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 516 states, 486 states have (on average 3.6358024691358026) internal successors, (1767), 515 states have internal predecessors, (1767), 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 20:59:03,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 20:59:03,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:03,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 20:59:03,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 25051, now seen corresponding path program 1 times [2022-11-02 20:59:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:03,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297453394] [2022-11-02 20:59:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:03,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,407 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 20:59:03,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:03,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297453394] [2022-11-02 20:59:03,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297453394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:03,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:03,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:59:03,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303771225] [2022-11-02 20:59:03,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:03,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:03,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:03,445 INFO L87 Difference]: Start difference. First operand has 516 states, 486 states have (on average 3.6358024691358026) internal successors, (1767), 515 states have internal predecessors, (1767), 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 20:59:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:03,656 INFO L93 Difference]: Finished difference Result 1027 states and 3529 transitions. [2022-11-02 20:59:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:03,659 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 20:59:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:03,701 INFO L225 Difference]: With dead ends: 1027 [2022-11-02 20:59:03,702 INFO L226 Difference]: Without dead ends: 1027 [2022-11-02 20:59:03,703 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 20:59:03,710 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:03,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 6 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-02 20:59:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 518. [2022-11-02 20:59:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 488 states have (on average 3.6290983606557377) internal successors, (1771), 517 states have internal predecessors, (1771), 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 20:59:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1771 transitions. [2022-11-02 20:59:03,868 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1771 transitions. Word has length 2 [2022-11-02 20:59:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:03,869 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 1771 transitions. [2022-11-02 20:59:03,869 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 20:59:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1771 transitions. [2022-11-02 20:59:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:59:03,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:03,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:59:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:03,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash 778010, now seen corresponding path program 1 times [2022-11-02 20:59:03,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:03,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633055453] [2022-11-02 20:59:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,033 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 20:59:04,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:04,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633055453] [2022-11-02 20:59:04,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633055453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:04,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569139237] [2022-11-02 20:59:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:04,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:04,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:04,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:59:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:04,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:04,228 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 20:59:04,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:04,262 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 20:59:04,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569139237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:04,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:04,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 20:59:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165999820] [2022-11-02 20:59:04,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:04,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:04,279 INFO L87 Difference]: Start difference. First operand 518 states and 1771 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 20:59:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:04,649 INFO L93 Difference]: Finished difference Result 2560 states and 8821 transitions. [2022-11-02 20:59:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:59:04,650 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 20:59:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:04,672 INFO L225 Difference]: With dead ends: 2560 [2022-11-02 20:59:04,672 INFO L226 Difference]: Without dead ends: 2560 [2022-11-02 20:59:04,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:04,675 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 176 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:04,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 15 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-11-02 20:59:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 524. [2022-11-02 20:59:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 494 states have (on average 3.6214574898785425) internal successors, (1789), 523 states have internal predecessors, (1789), 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 20:59:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1789 transitions. [2022-11-02 20:59:04,748 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1789 transitions. Word has length 3 [2022-11-02 20:59:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:04,749 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 1789 transitions. [2022-11-02 20:59:04,749 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 20:59:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1789 transitions. [2022-11-02 20:59:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:59:04,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:04,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:59:04,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:04,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 778011, now seen corresponding path program 1 times [2022-11-02 20:59:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:04,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805621780] [2022-11-02 20:59:04,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:05,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805621780] [2022-11-02 20:59:05,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805621780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:05,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:05,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463762059] [2022-11-02 20:59:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:05,077 INFO L87 Difference]: Start difference. First operand 524 states and 1789 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 20:59:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:05,188 INFO L93 Difference]: Finished difference Result 522 states and 1781 transitions. [2022-11-02 20:59:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 3 [2022-11-02 20:59:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:05,194 INFO L225 Difference]: With dead ends: 522 [2022-11-02 20:59:05,194 INFO L226 Difference]: Without dead ends: 522 [2022-11-02 20:59:05,194 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 20:59:05,195 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:05,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:05,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-02 20:59:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2022-11-02 20:59:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 494 states have (on average 3.6052631578947367) internal successors, (1781), 521 states have internal predecessors, (1781), 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 20:59:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1781 transitions. [2022-11-02 20:59:05,224 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1781 transitions. Word has length 3 [2022-11-02 20:59:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:05,224 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 1781 transitions. [2022-11-02 20:59:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 20:59:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1781 transitions. [2022-11-02 20:59:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:59:05,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:05,226 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 20:59:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:05,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:05,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1704278427, now seen corresponding path program 2 times [2022-11-02 20:59:05,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:05,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274096849] [2022-11-02 20:59:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:05,358 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 20:59:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:05,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274096849] [2022-11-02 20:59:05,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274096849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:05,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4541027] [2022-11-02 20:59:05,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:05,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:05,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:05,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:05,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:59:05,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:59:05,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:05,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:59:05,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:05,497 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 20:59:05,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:05,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4541027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:05,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:05,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 20:59:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803165035] [2022-11-02 20:59:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:05,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:05,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:05,501 INFO L87 Difference]: Start difference. First operand 522 states and 1781 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 20:59:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:05,581 INFO L93 Difference]: Finished difference Result 521 states and 1780 transitions. [2022-11-02 20:59:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:05,582 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 20:59:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:05,588 INFO L225 Difference]: With dead ends: 521 [2022-11-02 20:59:05,589 INFO L226 Difference]: Without dead ends: 521 [2022-11-02 20:59:05,589 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 20:59:05,590 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:05,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-02 20:59:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 517. [2022-11-02 20:59:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 490 states have (on average 3.6163265306122447) internal successors, (1772), 516 states have internal predecessors, (1772), 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 20:59:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1772 transitions. [2022-11-02 20:59:05,612 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1772 transitions. Word has length 6 [2022-11-02 20:59:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:05,613 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 1772 transitions. [2022-11-02 20:59:05,613 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 20:59:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1772 transitions. [2022-11-02 20:59:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:59:05,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:05,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:59:05,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:05,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:05,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1718673040, now seen corresponding path program 1 times [2022-11-02 20:59:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:05,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520846629] [2022-11-02 20:59:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:05,906 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 20:59:05,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:05,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520846629] [2022-11-02 20:59:05,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520846629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:05,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:05,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:05,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225555828] [2022-11-02 20:59:05,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:05,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:05,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:05,909 INFO L87 Difference]: Start difference. First operand 517 states and 1772 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 20:59:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:06,011 INFO L93 Difference]: Finished difference Result 767 states and 2617 transitions. [2022-11-02 20:59:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:06,011 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 20:59:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:06,017 INFO L225 Difference]: With dead ends: 767 [2022-11-02 20:59:06,018 INFO L226 Difference]: Without dead ends: 767 [2022-11-02 20:59:06,018 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 20:59:06,019 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:06,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-02 20:59:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 603. [2022-11-02 20:59:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 576 states have (on average 3.75) internal successors, (2160), 602 states have internal predecessors, (2160), 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 20:59:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 2160 transitions. [2022-11-02 20:59:06,058 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 2160 transitions. Word has length 6 [2022-11-02 20:59:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:06,059 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 2160 transitions. [2022-11-02 20:59:06,059 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 20:59:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 2160 transitions. [2022-11-02 20:59:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:59:06,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:06,061 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-02 20:59:06,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:59:06,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1742502792, now seen corresponding path program 1 times [2022-11-02 20:59:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:06,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42186739] [2022-11-02 20:59:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:06,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42186739] [2022-11-02 20:59:06,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42186739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:06,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:06,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:06,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979958278] [2022-11-02 20:59:06,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:06,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:06,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:06,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:59:06,297 INFO L87 Difference]: Start difference. First operand 603 states and 2160 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 20:59:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:06,449 INFO L93 Difference]: Finished difference Result 1114 states and 4005 transitions. [2022-11-02 20:59:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:06,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 20:59:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:06,458 INFO L225 Difference]: With dead ends: 1114 [2022-11-02 20:59:06,459 INFO L226 Difference]: Without dead ends: 1114 [2022-11-02 20:59:06,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:06,460 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:06,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 9 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-02 20:59:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 864. [2022-11-02 20:59:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 837 states have (on average 3.978494623655914) internal successors, (3330), 863 states have internal predecessors, (3330), 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 20:59:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3330 transitions. [2022-11-02 20:59:06,503 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3330 transitions. Word has length 7 [2022-11-02 20:59:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:06,503 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 3330 transitions. [2022-11-02 20:59:06,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 20:59:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3330 transitions. [2022-11-02 20:59:06,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:59:06,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:06,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:59:06,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1739258780, now seen corresponding path program 1 times [2022-11-02 20:59:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:06,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829524078] [2022-11-02 20:59:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:06,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:06,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829524078] [2022-11-02 20:59:06,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829524078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:06,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:06,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612221150] [2022-11-02 20:59:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:06,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:06,550 INFO L87 Difference]: Start difference. First operand 864 states and 3330 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 20:59:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:06,664 INFO L93 Difference]: Finished difference Result 778 states and 2940 transitions. [2022-11-02 20:59:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 20:59:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:06,671 INFO L225 Difference]: With dead ends: 778 [2022-11-02 20:59:06,671 INFO L226 Difference]: Without dead ends: 772 [2022-11-02 20:59:06,671 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 20:59:06,672 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:06,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 7 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-11-02 20:59:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 688. [2022-11-02 20:59:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 670 states have (on average 3.7880597014925375) internal successors, (2538), 687 states have internal predecessors, (2538), 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 20:59:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2538 transitions. [2022-11-02 20:59:06,700 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2538 transitions. Word has length 7 [2022-11-02 20:59:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:06,700 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 2538 transitions. [2022-11-02 20:59:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 20:59:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2538 transitions. [2022-11-02 20:59:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:59:06,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:06,702 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-02 20:59:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:59:06,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1878551977, now seen corresponding path program 1 times [2022-11-02 20:59:06,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:06,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140204717] [2022-11-02 20:59:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:06,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:06,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:06,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140204717] [2022-11-02 20:59:06,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140204717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:06,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885584890] [2022-11-02 20:59:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:06,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:06,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:06,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:06,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:59:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:06,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:59:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:59:07,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:59:07,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885584890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:07,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:07,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-11-02 20:59:07,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708689381] [2022-11-02 20:59:07,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:07,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:59:07,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:59:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:59:07,089 INFO L87 Difference]: Start difference. First operand 688 states and 2538 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:07,548 INFO L93 Difference]: Finished difference Result 1701 states and 6076 transitions. [2022-11-02 20:59:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:59:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:07,566 INFO L225 Difference]: With dead ends: 1701 [2022-11-02 20:59:07,566 INFO L226 Difference]: Without dead ends: 1689 [2022-11-02 20:59:07,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:59:07,567 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 486 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:07,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 27 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:59:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-11-02 20:59:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 690. [2022-11-02 20:59:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 672 states have (on average 3.7827380952380953) internal successors, (2542), 689 states have internal predecessors, (2542), 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 20:59:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2542 transitions. [2022-11-02 20:59:07,621 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2542 transitions. Word has length 8 [2022-11-02 20:59:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:07,621 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2542 transitions. [2022-11-02 20:59:07,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2542 transitions. [2022-11-02 20:59:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:07,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:07,624 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-02 20:59:07,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:07,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:07,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:07,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1801109416, now seen corresponding path program 2 times [2022-11-02 20:59:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:07,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887515844] [2022-11-02 20:59:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:07,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:59:08,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:08,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887515844] [2022-11-02 20:59:08,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887515844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:08,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166270678] [2022-11-02 20:59:08,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:08,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:08,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:08,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:08,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:59:08,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:59:08,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:08,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:59:08,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:59:08,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:08,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166270678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:08,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:08,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-11-02 20:59:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075552925] [2022-11-02 20:59:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:08,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:08,179 INFO L87 Difference]: Start difference. First operand 690 states and 2542 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 20:59:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:08,252 INFO L93 Difference]: Finished difference Result 603 states and 2237 transitions. [2022-11-02 20:59:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:08,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 20:59:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:08,258 INFO L225 Difference]: With dead ends: 603 [2022-11-02 20:59:08,258 INFO L226 Difference]: Without dead ends: 597 [2022-11-02 20:59:08,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:08,261 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:08,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-11-02 20:59:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 340. [2022-11-02 20:59:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 332 states have (on average 3.4578313253012047) internal successors, (1148), 339 states have internal predecessors, (1148), 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 20:59:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1148 transitions. [2022-11-02 20:59:08,281 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1148 transitions. Word has length 9 [2022-11-02 20:59:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:08,282 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 1148 transitions. [2022-11-02 20:59:08,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 20:59:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1148 transitions. [2022-11-02 20:59:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:59:08,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:08,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:08,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:08,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:08,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash 867589338, now seen corresponding path program 1 times [2022-11-02 20:59:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518389065] [2022-11-02 20:59:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:08,560 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 20:59:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518389065] [2022-11-02 20:59:08,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518389065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:08,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:08,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509189095] [2022-11-02 20:59:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:08,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:08,563 INFO L87 Difference]: Start difference. First operand 340 states and 1148 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 20:59:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:08,657 INFO L93 Difference]: Finished difference Result 504 states and 1707 transitions. [2022-11-02 20:59:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:08,658 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 20:59:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:08,662 INFO L225 Difference]: With dead ends: 504 [2022-11-02 20:59:08,662 INFO L226 Difference]: Without dead ends: 504 [2022-11-02 20:59:08,663 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 20:59:08,663 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:08,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 7 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-02 20:59:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 448. [2022-11-02 20:59:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 440 states have (on average 3.5681818181818183) internal successors, (1570), 447 states have internal predecessors, (1570), 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 20:59:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1570 transitions. [2022-11-02 20:59:08,684 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1570 transitions. Word has length 9 [2022-11-02 20:59:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:08,685 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 1570 transitions. [2022-11-02 20:59:08,686 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 20:59:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1570 transitions. [2022-11-02 20:59:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:59:08,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:08,687 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:59:08,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash 529726512, now seen corresponding path program 1 times [2022-11-02 20:59:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112677524] [2022-11-02 20:59:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:08,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112677524] [2022-11-02 20:59:08,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112677524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:08,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:08,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:59:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121237878] [2022-11-02 20:59:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:08,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:08,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:08,797 INFO L87 Difference]: Start difference. First operand 448 states and 1570 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 20:59:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:08,945 INFO L93 Difference]: Finished difference Result 621 states and 2091 transitions. [2022-11-02 20:59:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:59:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 20:59:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:08,950 INFO L225 Difference]: With dead ends: 621 [2022-11-02 20:59:08,950 INFO L226 Difference]: Without dead ends: 605 [2022-11-02 20:59:08,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:08,951 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:08,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 13 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:08,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-02 20:59:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 549. [2022-11-02 20:59:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 541 states have (on average 3.5268022181146024) internal successors, (1908), 548 states have internal predecessors, (1908), 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 20:59:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1908 transitions. [2022-11-02 20:59:08,975 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1908 transitions. Word has length 11 [2022-11-02 20:59:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:08,976 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 1908 transitions. [2022-11-02 20:59:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 20:59:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1908 transitions. [2022-11-02 20:59:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:59:08,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:08,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:08,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:59:08,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash 730585173, now seen corresponding path program 1 times [2022-11-02 20:59:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965911397] [2022-11-02 20:59:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,031 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 20:59:09,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:09,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965911397] [2022-11-02 20:59:09,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965911397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:09,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:09,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:09,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047301690] [2022-11-02 20:59:09,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:09,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:09,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:09,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:09,033 INFO L87 Difference]: Start difference. First operand 549 states and 1908 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 20:59:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:09,126 INFO L93 Difference]: Finished difference Result 769 states and 2743 transitions. [2022-11-02 20:59:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 20:59:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:09,134 INFO L225 Difference]: With dead ends: 769 [2022-11-02 20:59:09,134 INFO L226 Difference]: Without dead ends: 769 [2022-11-02 20:59:09,134 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 20:59:09,135 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:09,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-02 20:59:09,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 713. [2022-11-02 20:59:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 705 states have (on average 3.702127659574468) internal successors, (2610), 712 states have internal predecessors, (2610), 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 20:59:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2610 transitions. [2022-11-02 20:59:09,167 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2610 transitions. Word has length 11 [2022-11-02 20:59:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:09,167 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 2610 transitions. [2022-11-02 20:59:09,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 20:59:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2610 transitions. [2022-11-02 20:59:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:59:09,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:09,169 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:09,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:59:09,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1731285081, now seen corresponding path program 1 times [2022-11-02 20:59:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:09,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666440441] [2022-11-02 20:59:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666440441] [2022-11-02 20:59:09,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666440441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522208707] [2022-11-02 20:59:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:09,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:09,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:59:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:59:09,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:09,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:09,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522208707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:09,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:09,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-02 20:59:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335443244] [2022-11-02 20:59:09,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:09,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:59:09,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:59:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:59:09,690 INFO L87 Difference]: Start difference. First operand 713 states and 2610 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) 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 20:59:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:10,204 INFO L93 Difference]: Finished difference Result 1229 states and 4290 transitions. [2022-11-02 20:59:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:59:10,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) 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 13 [2022-11-02 20:59:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:10,215 INFO L225 Difference]: With dead ends: 1229 [2022-11-02 20:59:10,215 INFO L226 Difference]: Without dead ends: 1197 [2022-11-02 20:59:10,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:59:10,217 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 377 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:10,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 41 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:59:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-11-02 20:59:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 907. [2022-11-02 20:59:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 899 states have (on average 3.733036707452725) internal successors, (3356), 906 states have internal predecessors, (3356), 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 20:59:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 3356 transitions. [2022-11-02 20:59:10,255 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 3356 transitions. Word has length 13 [2022-11-02 20:59:10,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:10,256 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 3356 transitions. [2022-11-02 20:59:10,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) 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 20:59:10,256 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 3356 transitions. [2022-11-02 20:59:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:59:10,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:10,258 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:10,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:10,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:59:10,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2012746692, now seen corresponding path program 1 times [2022-11-02 20:59:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:10,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859042021] [2022-11-02 20:59:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:10,563 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 20:59:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:10,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859042021] [2022-11-02 20:59:10,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859042021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:10,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596426901] [2022-11-02 20:59:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:10,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:10,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:10,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:10,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:59:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:10,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:59:10,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:10,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:10,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596426901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:10,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:10,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-02 20:59:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098228446] [2022-11-02 20:59:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:10,764 INFO L87 Difference]: Start difference. First operand 907 states and 3356 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:10,907 INFO L93 Difference]: Finished difference Result 915 states and 3309 transitions. [2022-11-02 20:59:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:59:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:59:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:10,915 INFO L225 Difference]: With dead ends: 915 [2022-11-02 20:59:10,916 INFO L226 Difference]: Without dead ends: 837 [2022-11-02 20:59:10,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:10,917 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:10,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 13 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-11-02 20:59:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 837. [2022-11-02 20:59:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 829 states have (on average 3.7587454764776838) internal successors, (3116), 836 states have internal predecessors, (3116), 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 20:59:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 3116 transitions. [2022-11-02 20:59:10,956 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 3116 transitions. Word has length 13 [2022-11-02 20:59:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:10,956 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 3116 transitions. [2022-11-02 20:59:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 3116 transitions. [2022-11-02 20:59:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:59:10,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:10,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:11,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:11,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:59:11,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash 158915984, now seen corresponding path program 2 times [2022-11-02 20:59:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:11,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71326241] [2022-11-02 20:59:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:11,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71326241] [2022-11-02 20:59:11,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71326241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:11,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960219537] [2022-11-02 20:59:11,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:11,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:11,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:11,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:11,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:59:11,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:59:11,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:11,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:11,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:59:11,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:59:11,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960219537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:11,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:11,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-11-02 20:59:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364547204] [2022-11-02 20:59:11,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:11,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:59:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:59:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:59:11,477 INFO L87 Difference]: Start difference. First operand 837 states and 3116 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 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 20:59:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:11,694 INFO L93 Difference]: Finished difference Result 1205 states and 4405 transitions. [2022-11-02 20:59:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:59:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 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 15 [2022-11-02 20:59:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:11,703 INFO L225 Difference]: With dead ends: 1205 [2022-11-02 20:59:11,704 INFO L226 Difference]: Without dead ends: 1205 [2022-11-02 20:59:11,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:11,705 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 102 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:11,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 13 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:59:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-11-02 20:59:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 767. [2022-11-02 20:59:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 762 states have (on average 3.7506561679790025) internal successors, (2858), 766 states have internal predecessors, (2858), 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 20:59:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2858 transitions. [2022-11-02 20:59:11,760 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2858 transitions. Word has length 15 [2022-11-02 20:59:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:11,761 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2858 transitions. [2022-11-02 20:59:11,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 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 20:59:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2858 transitions. [2022-11-02 20:59:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:59:11,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:11,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:11,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:11,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:59:11,990 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 158915985, now seen corresponding path program 1 times [2022-11-02 20:59:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:11,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163793068] [2022-11-02 20:59:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:12,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163793068] [2022-11-02 20:59:12,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163793068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:12,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305740147] [2022-11-02 20:59:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:12,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:12,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:59:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:12,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:12,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:12,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305740147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:12,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:59:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3544843] [2022-11-02 20:59:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:12,260 INFO L87 Difference]: Start difference. First operand 767 states and 2858 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:12,379 INFO L93 Difference]: Finished difference Result 773 states and 2793 transitions. [2022-11-02 20:59:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:59:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:12,383 INFO L225 Difference]: With dead ends: 773 [2022-11-02 20:59:12,383 INFO L226 Difference]: Without dead ends: 733 [2022-11-02 20:59:12,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:12,384 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:12,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 11 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-02 20:59:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 533. [2022-11-02 20:59:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 3.610169491525424) internal successors, (1917), 532 states have internal predecessors, (1917), 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 20:59:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1917 transitions. [2022-11-02 20:59:12,408 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1917 transitions. Word has length 15 [2022-11-02 20:59:12,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:12,410 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 1917 transitions. [2022-11-02 20:59:12,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1917 transitions. [2022-11-02 20:59:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:59:12,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:12,411 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:12,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:12,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:12,626 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:12,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:12,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1364328877, now seen corresponding path program 1 times [2022-11-02 20:59:12,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:12,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315617062] [2022-11-02 20:59:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:59:12,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:12,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315617062] [2022-11-02 20:59:12,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315617062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:12,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699984375] [2022-11-02 20:59:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:12,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:12,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:12,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:12,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:59:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:12,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:59:12,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:12,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:13,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699984375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:13,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:13,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2022-11-02 20:59:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305014945] [2022-11-02 20:59:13,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:13,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:59:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:59:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:59:13,018 INFO L87 Difference]: Start difference. First operand 533 states and 1917 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:13,327 INFO L93 Difference]: Finished difference Result 551 states and 1901 transitions. [2022-11-02 20:59:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:13,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:59:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:13,330 INFO L225 Difference]: With dead ends: 551 [2022-11-02 20:59:13,330 INFO L226 Difference]: Without dead ends: 344 [2022-11-02 20:59:13,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:59:13,331 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 135 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:13,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 44 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:59:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-02 20:59:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-11-02 20:59:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 342 states have (on average 3.6198830409356724) internal successors, (1238), 343 states have internal predecessors, (1238), 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 20:59:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1238 transitions. [2022-11-02 20:59:13,344 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1238 transitions. Word has length 15 [2022-11-02 20:59:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:13,344 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 1238 transitions. [2022-11-02 20:59:13,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1238 transitions. [2022-11-02 20:59:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:59:13,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:13,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:13,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:13,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:59:13,570 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2146114902, now seen corresponding path program 1 times [2022-11-02 20:59:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:13,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988943421] [2022-11-02 20:59:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988943421] [2022-11-02 20:59:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988943421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712224902] [2022-11-02 20:59:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:13,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:13,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:13,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:13,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:59:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:13,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:13,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:13,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:13,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712224902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:13,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:13,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:59:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956278310] [2022-11-02 20:59:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:13,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:59:13,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:59:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:13,827 INFO L87 Difference]: Start difference. First operand 344 states and 1238 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:13,920 INFO L93 Difference]: Finished difference Result 310 states and 1092 transitions. [2022-11-02 20:59:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:59:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:59:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:13,923 INFO L225 Difference]: With dead ends: 310 [2022-11-02 20:59:13,923 INFO L226 Difference]: Without dead ends: 310 [2022-11-02 20:59:13,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:13,924 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:13,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 13 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-02 20:59:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2022-11-02 20:59:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.533980582524272) internal successors, (1092), 309 states have internal predecessors, (1092), 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 20:59:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 1092 transitions. [2022-11-02 20:59:13,936 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 1092 transitions. Word has length 17 [2022-11-02 20:59:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:13,936 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 1092 transitions. [2022-11-02 20:59:13,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 1092 transitions. [2022-11-02 20:59:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:59:13,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:13,938 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:13,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:14,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:59:14,154 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:59:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash 832135379, now seen corresponding path program 2 times [2022-11-02 20:59:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:14,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901068362] [2022-11-02 20:59:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:59:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901068362] [2022-11-02 20:59:14,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901068362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992737493] [2022-11-02 20:59:14,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:14,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:14,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:14,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:59:14,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:59:14,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:14,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:59:14,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:59:14,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992737493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:14,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:14,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2022-11-02 20:59:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261709325] [2022-11-02 20:59:14,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:14,536 INFO L87 Difference]: Start difference. First operand 310 states and 1092 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:14,713 INFO L93 Difference]: Finished difference Result 378 states and 1384 transitions. [2022-11-02 20:59:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:59:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:59:14,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:14,714 INFO L225 Difference]: With dead ends: 378 [2022-11-02 20:59:14,714 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:59:14,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:59:14,715 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 121 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:14,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 13 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:59:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:59:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 20:59:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:59:14,716 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-02 20:59:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:14,717 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:59:14,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:59:14,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:59:14,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2022-11-02 20:59:14,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-02 20:59:14,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-02 20:59:14,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-02 20:59:14,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2022-11-02 20:59:14,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2022-11-02 20:59:14,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2022-11-02 20:59:14,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-02 20:59:14,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-02 20:59:14,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-02 20:59:14,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-02 20:59:14,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-02 20:59:14,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-02 20:59:14,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:14,929 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:14,934 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:59:14,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:59:14,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:59:14 BasicIcfg [2022-11-02 20:59:14,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:59:14,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:59:14,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:59:14,940 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:59:14,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:54" (3/4) ... [2022-11-02 20:59:14,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:59:14,952 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:59:14,952 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:59:14,953 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-02 20:59:14,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-02 20:59:14,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:59:14,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:59:14,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:59:15,035 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:59:15,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:59:15,036 INFO L158 Benchmark]: Toolchain (without parser) took 22404.74ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 48.8MB in the beginning and 97.5MB in the end (delta: -48.7MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,037 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:59:15,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.53ms. Allocated memory is still 92.3MB. Free memory was 48.6MB in the beginning and 64.7MB in the end (delta: -16.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.55ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 62.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,038 INFO L158 Benchmark]: Boogie Preprocessor took 31.66ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 61.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,039 INFO L158 Benchmark]: RCFGBuilder took 891.70ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 41.4MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,040 INFO L158 Benchmark]: TraceAbstraction took 20895.99ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 40.9MB in the beginning and 100.6MB in the end (delta: -59.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,041 INFO L158 Benchmark]: Witness Printer took 96.73ms. Allocated memory is still 161.5MB. Free memory was 100.6MB in the beginning and 97.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:59:15,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.53ms. Allocated memory is still 92.3MB. Free memory was 48.6MB in the beginning and 64.7MB in the end (delta: -16.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.55ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 62.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.66ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 61.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 891.70ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 41.4MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20895.99ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 40.9MB in the beginning and 100.6MB in the end (delta: -59.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 96.73ms. Allocated memory is still 161.5MB. Free memory was 100.6MB in the beginning and 97.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7s, 199 PlacesBefore, 46 PlacesAfterwards, 205 TransitionsBefore, 42 TransitionsAfterwards, 2680 CoEnabledTransitionPairs, 7 FixpointIterations, 129 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 6 ConcurrentYvCompositions, 10 ChoiceCompositions, 214 TotalNumberOfCompositions, 4943 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3342, positive: 3212, positive conditional: 0, positive unconditional: 3212, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1830, positive: 1797, positive conditional: 0, positive unconditional: 1797, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1830, positive: 1797, positive conditional: 0, positive unconditional: 1797, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 155, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 155, negative conditional: 0, negative unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3342, positive: 1415, positive conditional: 0, positive unconditional: 1415, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 1830, unknown conditional: 0, unknown unconditional: 1830] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 20.7s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1814 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1814 mSDsluCounter, 258 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1121 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2274 IncrementalHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 94 mSDtfsCounter, 2274 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 160 SyntacticMatches, 7 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=907occurred in iteration=13, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 5399 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 322 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 359 ConstructedInterpolants, 0 QuantifiedInterpolants, 963 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1985 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 36 InterpolantComputations, 13 PerfectInterpolantSequences, 158/216 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:59:15,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17347ef-e288-4535-a418-d61e75a56619/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE